CN117741515A - Natural ester vegetable oil transformer performance judging method and device - Google Patents
Natural ester vegetable oil transformer performance judging method and device Download PDFInfo
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- 235000015112 vegetable and seed oil Nutrition 0.000 title claims abstract description 238
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- 238000004590 computer program Methods 0.000 claims abstract description 37
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- 238000004804 winding Methods 0.000 claims description 44
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- 235000010446 mineral oil Nutrition 0.000 abstract description 15
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Abstract
The application relates to a method, a device, a computer device, a storage medium and a computer program product for judging the performance of a natural ester vegetable oil transformer. The method comprises the steps of obtaining electrical parameters of the natural ester vegetable oil transformer, calculating total grounding current of the natural ester vegetable oil transformer according to the electrical parameters, and judging the performance of the natural ester vegetable oil transformer based on standard parameters and the total grounding current. The natural ester vegetable oil transformer performance judgment method has the advantages that the electrical parameters of the natural ester vegetable oil transformer are calculated, the performance judgment is carried out on the natural ester vegetable oil transformer, the interference of the electrical parameters of the traditional mineral oil transformer is avoided, the performance judgment can be carried out on the natural ester vegetable oil transformer more accurately, and the reliability of the natural ester vegetable oil transformer is guaranteed.
Description
Technical Field
The present application relates to the technical field of natural ester vegetable oil transformers, and in particular, to a method and an apparatus for determining performance of a natural ester vegetable oil transformer, a natural ester vegetable oil transformer detection system, a computer device, a computer readable storage medium, and a computer program product.
Background
The insulating oil widely used in the current power system is mineral insulating oil, has low ignition point and poor biodegradability, is difficult to meet the manufacturing requirements of high-fireproof electrical equipment, causes pollution to the surrounding environment when leakage occurs, and consumes a large amount of petroleum which is a non-renewable resource. Along with the proposal of the 'double carbon' target, the energy structure transformation and upgrading are required to be gradually advanced, a clean, low-carbon, safe and efficient energy system is constructed, and the power system equipment is also developed towards the directions of more environmental protection, energy conservation and emission reduction.
The natural ester vegetable oil transformer is used as a new generation transformer technology, vegetable oil is used as insulating oil of the transformer, and the transformer has the characteristics of high ignition point, degradability, reproducibility and the like, is safe and environment-friendly, and can improve the overload capacity of the transformer. Meets the requirements of green, environment-friendly and safe power grid construction, is an important assistance in the development direction of building a green power grid, and has a larger and larger duty ratio in a future power system.
Whereas conventional transformers use mineral oil as insulating oil, natural ester vegetable oil transformers use vegetable oil as insulating oil, and the material properties and physical properties of vegetable oil and mineral oil are not the same. The electrical parameters of natural ester vegetable oil transformers are also different from common mineral oil transformers because of the large insulating oil duty cycle between the transformer electrodes. The performance judgment of the transformer is obtained based on the test summary of the mineral oil transformer at present, and the fact that the electrical parameters of the natural ester vegetable oil transformer are different from those of the common mineral oil transformer, how to accurately judge the performance of the natural ester vegetable oil transformer is a problem to be solved urgently.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a method, an apparatus, a system for detecting a natural ester vegetable oil transformer, a computer device, a computer readable storage medium, and a computer program product for determining the performance of a natural ester vegetable oil transformer, which can improve the accuracy of the determination of the performance of a natural ester vegetable oil transformer.
In a first aspect, the present application provides a method for determining performance of a natural ester vegetable oil transformer, the method comprising:
acquiring electrical parameters of a natural ester vegetable oil transformer;
calculating the total grounding current of the natural ester vegetable oil transformer according to the electrical parameters;
and performing performance judgment on the natural ester vegetable oil transformer based on the standard parameters and the total grounding current.
In one embodiment, the calculating the total ground current of the natural ester vegetable oil transformer from the electrical parameter comprises:
calculating the column-to-column ground current of the natural ester vegetable oil transformer according to the electrical parameters;
obtaining the structural characteristics of the natural ester vegetable oil transformer;
and integrating the column-to-column grounding current according to the structural characteristics to obtain the total grounding current of the natural ester vegetable oil transformer.
In one embodiment, the electrical parameters include winding voltage and capacitance to ground, the calculating the column-to-column ground current of the natural ester vegetable oil transformer from the electrical parameters includes:
and calculating the column-to-column ground current of the natural ester vegetable oil transformer according to the winding voltage and the capacitance to ground.
In one embodiment, the total ground current includes a total core ground current and a total clip ground current, and the integrating the post-to-post ground current according to the structural feature results in a total ground current of the natural ester vegetable oil transformer, including:
and integrating the column-to-column grounding current according to the structural characteristics to obtain the total iron core grounding current and the total clamp grounding current.
In one embodiment, the integrating the post-to-post ground current according to the structural feature obtains a total core ground current and a total clip ground current, including:
classifying the inter-column grounding current according to the structural characteristics to obtain iron core grounding current and clamping piece grounding current;
calculating to obtain total iron core grounding current according to the current phase angle difference of each iron core grounding current and each iron core grounding current;
And calculating to obtain the total clamp grounding current according to the current phase angle difference of each clamp grounding current and the clamp grounding current.
In one embodiment, the performance determination of the natural ester vegetable oil transformer based on the standard parameters and the total ground current includes:
determining a difference value between a standard parameter and the total ground current;
and judging the performance of the natural ester vegetable oil transformer according to the difference value and a preset error threshold value.
In a second aspect, the present application further provides a device for determining performance of a natural ester vegetable oil transformer, the device comprising:
the parameter acquisition module is used for acquiring the electrical parameters of the natural ester vegetable oil transformer;
the calculation module is used for calculating the total grounding current of the natural ester vegetable oil transformer according to the electrical parameters;
and the judging module is used for judging the performance of the natural ester vegetable oil transformer based on the standard parameters and the total grounding current.
In a third aspect, the present application further provides a natural ester vegetable oil transformer detection system, the natural ester vegetable oil transformer detection system including a natural ester vegetable oil transformer and a processor, the natural ester vegetable oil transformer being connected to the processor, the processor being configured to implement the steps of the above method.
In a fourth aspect, the present application also provides a computer device comprising a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:
acquiring electrical parameters of a natural ester vegetable oil transformer;
calculating the total grounding current of the natural ester vegetable oil transformer according to the electrical parameters;
and performing performance judgment on the natural ester vegetable oil transformer based on the standard parameters and the total grounding current.
In a fifth aspect, the present application also provides a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:
acquiring electrical parameters of a natural ester vegetable oil transformer;
calculating the total grounding current of the natural ester vegetable oil transformer according to the electrical parameters;
and performing performance judgment on the natural ester vegetable oil transformer based on the standard parameters and the total grounding current.
In a sixth aspect, the present application also provides a computer program product comprising a computer program which, when executed by a processor, performs the steps of:
acquiring electrical parameters of a natural ester vegetable oil transformer;
Calculating the total grounding current of the natural ester vegetable oil transformer according to the electrical parameters;
and performing performance judgment on the natural ester vegetable oil transformer based on the standard parameters and the total grounding current.
The method, the device, the system for detecting the natural ester vegetable oil transformer, the computer equipment, the computer readable storage medium and the computer program product for judging the performance of the natural ester vegetable oil transformer comprise the steps of obtaining the electrical parameters of the natural ester vegetable oil transformer, calculating the total grounding current of the natural ester vegetable oil transformer according to the electrical parameters, and judging the performance of the natural ester vegetable oil transformer based on the standard parameters and the total grounding current. The natural ester vegetable oil transformer performance judgment method has the advantages that the electrical parameters of the natural ester vegetable oil transformer are calculated, the performance judgment is carried out on the natural ester vegetable oil transformer, the interference of the electrical parameters of the traditional mineral oil transformer is avoided, the performance judgment can be carried out on the natural ester vegetable oil transformer more accurately, and the reliability of the natural ester vegetable oil transformer is guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for a person having ordinary skill in the art.
FIG. 1 is a diagram showing an application environment of a method for judging the performance of a natural ester vegetable oil transformer according to an embodiment;
FIG. 2 is a flow chart of a method for determining performance of a natural ester vegetable oil transformer in one embodiment;
FIG. 3 is a flow chart illustrating the steps for calculating the total ground current of a natural ester vegetable oil transformer based on electrical parameters in one embodiment;
FIG. 4 is a circuit diagram of the equivalent of ground current in a natural ester vegetable oil transformer in one embodiment;
FIG. 5 is a schematic diagram of a natural ester vegetable oil transformer in one embodiment;
FIG. 6 is a schematic diagram of a natural ester vegetable oil transformer in another embodiment;
FIG. 7 is a schematic diagram of a natural ester vegetable oil transformer in yet another embodiment;
FIG. 8 is a block diagram showing a device for judging the performance of a natural ester vegetable oil transformer according to an embodiment;
fig. 9 is an internal structural diagram of a computer device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. Embodiments of the present application are illustrated in the accompanying drawings, but the present application may be embodied in many different forms and are not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
It will be understood that the terms "first," "second," and the like, as used herein, may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another element. For example, a first resistance may be referred to as a second resistance, and similarly, a second resistance may be referred to as a first resistance, without departing from the scope of the present application. Both the first resistor and the second resistor are resistors, but they are not the same resistor.
It is to be understood that in the following embodiments, "connected" is understood to mean "electrically connected", "communicatively connected", etc., if the connected circuits, modules, units, etc., have electrical or data transfer between them.
As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," and/or the like, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof. Also, the term "and/or" as used in this specification includes any and all combinations of the associated listed items.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
The method for judging the performance of the natural ester vegetable oil transformer can be applied to an application environment shown in fig. 1. The natural ester vegetable oil transformer 104 is connected to the processor 102, and the processor 102 can obtain data of the natural ester vegetable oil transformer 104, analyze the data of the natural ester vegetable oil transformer 104, and judge the performance of the natural ester vegetable oil transformer 104 to obtain a performance judgment result. The staff member can analyze whether the natural ester vegetable oil transformer 104 fails or not and can continue to work according to the performance judgment result. The processor 102 may be, but is not limited to, various personal computers, notebook computers, smart phones, and tablet computers. The natural ester vegetable oil transformer 104 is a new type of transformer, and is characterized in that the insulating oil is vegetable oil rather than common mineral oil, compared with the conventional transformer. For transformers, the performance of the insulating oil is extremely important, and the use of different insulating oils can lead to variations in the voltage and power carrying capacity that the transformer can withstand. Compared with mineral oil, the vegetable oil has better insulating property, renewable resource consumption, degradability and nonflammability, and compared with a transformer using mineral oil under the same structure, the transformer using vegetable oil can bear wider power transmission tasks. The performance judging method of the natural ester vegetable oil transformer can be applied to the application scene of fig. 1, can also be applied to a terminal, the terminal is connected with a data storage system, and data related to the natural ester vegetable oil transformer required by the terminal are stored in the data storage system and are called by the terminal at any time. The terminal can be various computers for realizing the method for judging the performance of the natural ester vegetable oil transformer disclosed in each embodiment of the application.
In an exemplary embodiment, as shown in fig. 2, a method for determining performance of a natural ester vegetable oil transformer is provided, and the method is applied to the processor in fig. 1, and is described as an example, and includes the following steps 202 to 206.
Step 202, obtaining electrical parameters of the natural ester vegetable oil transformer.
The electrical parameters of the natural ester vegetable oil transformer comprise voltage parameters, current parameters, resistance parameters and related circuit parameters of the natural ester vegetable oil transformer, wherein the voltage parameters comprise voltages borne by the natural ester vegetable oil transformer, the current parameters comprise currents borne by the natural ester vegetable oil transformer, and the resistance parameters comprise equivalent resistance values of structures of the natural ester vegetable oil transformer.
Specifically, the processor obtains the electrical parameters of the natural ester vegetable oil transformer, which can be obtained by measuring the connected natural ester vegetable oil transformer, can be obtained according to data stored in the data storage system, can be connected with the cloud server in a communication manner, and receives the corresponding electrical parameters sent by the cloud server in response by requesting the electrical parameters of the natural ester vegetable oil transformer from the cloud.
Step 204, calculating the total grounding current of the natural ester vegetable oil transformer according to the electrical parameters.
The vegetable oil used in the natural ester vegetable oil transformer has better insulating property than common mineral oil, so that the capacitance resistance of the natural ester vegetable oil transformer is larger than that of the mineral oil transformer and the grounding current is larger than that of the mineral oil transformer under the condition of the same insulating distance. In the performance of the transformer, the judgment of the insulation performance can be obtained by calculating the analysis of the grounding current. The grounding current is used as an important index for judging the insulation performance of the transformer, and can fully reflect the insulation performance level of the transformer.
Specifically, the total grounding current of the natural ester vegetable oil transformer is calculated according to electrical parameters, wherein the electrical parameters comprise voltage parameters and resistance parameters, and the total grounding current of the natural ester vegetable oil transformer is calculated through the voltage parameters and the resistance parameters of the natural ester vegetable oil transformer.
In an exemplary embodiment, as shown in FIG. 3, step 204 includes steps 302 through 306. Wherein:
step 302, calculating the column-to-column ground current of the natural ester vegetable oil transformer according to the electrical parameters.
In the structure of the natural ester vegetable oil transformer, generally, a column structure is used as a base, related devices such as a winding, a shielding structure, a clamping piece and the like are arranged by taking each column as a center, and a resistance and capacitance coupling relationship exists between a structure with a high potential electrode such as a coil, a lead and the like and a structure with a low potential electrode such as an iron core, a structural member and the like. When the grounding current is calculated, the grounding current between columns of the natural ester vegetable oil transformer can be calculated firstly according to the column structure of the natural ester vegetable oil transformer. And obtaining the corresponding number of column indirect ground currents according to the number of column structures of the natural ester vegetable oil transformer. Illustratively, when the natural ester vegetable oil transformer is a single-column transformer, the number of column-to-column ground currents is one, when the natural ester vegetable oil transformer is a double-column transformer, the number of column-to-column ground currents is two, and so on.
In particular, there may be various ways to calculate the column-to-column ground current from electrical parameters, including winding voltage and capacitance to ground in one embodiment. Step 302 includes step 402: and calculating the column-to-column ground current of the natural ester vegetable oil transformer according to the winding voltage and the capacitance to ground.
The winding voltage is the voltage carried on the winding in the natural ester vegetable oil transformer, namely the working voltage of the natural ester vegetable oil transformer. The capacitance to ground is the distributed capacitance between the coil, lead and other electrodes and the structural member.
Specifically, the terminal can calculate the column-to-column ground current in the natural ester vegetable oil transformer according to the winding voltage and the capacitance to ground. If a plurality of column structures exist in the natural ester vegetable oil transformer, the indirect ground current of each column is calculated. The terminal can also calculate the column-to-column ground current of the natural ester vegetable oil transformer based on the winding voltage, the capacitance to ground and the insulated winding. Wherein the insulated winding is the insulation resistance between the motor and the structural member such as the coil of the natural ester vegetable oil transformer, the lead wire and the like.
Taking a single-phase single-column natural ester vegetable oil transformer as an example, the equivalent circuit of the grounding current in the natural ester vegetable oil transformer can be as shown in fig. 4, and then the column grounding current is as follows:
（1）
Wherein I is the grounding current, U is the winding voltage, R is the insulation resistance, C is the capacitance to ground, j is the complex number, and ω is the angular frequency.
In equation (1), the ground current can be calculated from the winding voltage, insulation resistance, and capacitance to ground. Since R is usually small and negligible, the ground current is mainly determined by the winding voltage and the capacitance to ground under certain frequency conditions.
Step 304, obtaining the structural characteristics of the natural ester vegetable oil transformer.
In particular, natural ester vegetable oil transformers are of various structures, and may be provided with different numbers of shields, called ground shields, in addition to the number of post structures. The shielding piece is used as one of important structural characteristics of the natural ester vegetable oil transformer, and has a great influence on the calculation of the grounding current of the natural ester vegetable oil transformer.
For example, taking a single-phase double-pole natural ester vegetable oil transformer as an example, as shown in fig. 5, 6 and 7, the shielding arrangement of the single-phase double-pole natural ester vegetable oil transformer may be a double-ground-shield structure (fig. 5), a non-ground-shield structure (fig. 6) and a single-ground-shield structure (fig. 7). The double-ground-screen structure comprises a ground screen 1 and a ground screen 2, the single-ground-screen structure comprises the ground screen 1 or the ground screen 2, and the ground-screen-free structure does not comprise the ground screen. Winding 1 and winding 2 are around locating the first post structure of iron core, and winding 3 and winding 4 are around locating the second post structure of iron core, and the ground screen sets up between winding and the iron core that the winding was around locating.
And 306, integrating the column indirect ground current according to the structural characteristics to obtain the total ground current of the natural ester vegetable oil transformer.
Specifically, the column indirect ground current is integrated according to structural characteristics, and the column indirect ground current of the natural ester vegetable oil transformer is classified or calculated according to the structural characteristics of the natural ester vegetable oil transformer, so that the total ground current of the natural ester vegetable oil transformer is obtained. For example, the column indirect ground currents are classified, the column indirect ground currents with the ground screen and the column indirect ground currents without the ground screen are divided into different ground currents, and the different ground currents are summarized respectively to obtain the total ground current.
The total ground current may be a value obtained by summing up the values, or may be a total value of each category obtained by classifying and summing up the values. In one embodiment, the total ground current includes a total core ground current and a total clip ground current. Step 306 includes step 502: and integrating the column-to-column grounding current according to the structural characteristics to obtain the total iron core grounding current and the total clamp grounding current.
Specifically, the processor classifies the column indirect grounding currents according to the structural characteristics, and integrates the column indirect grounding currents in an accumulation mode according to the class of each column indirect grounding current, so that the total iron core grounding current and the total clamp grounding current are obtained respectively.
The integration process of the grounding current between the columns can be classified and accumulated, and the total iron core grounding current and the total clamp grounding current can be obtained. The total core ground current and the total clip ground current may be obtained by other means. In one embodiment, step 502 includes step 602, step 604, and step 606.
And step 602, classifying the column-to-column grounding current according to the structural characteristics to obtain the iron core grounding current and the clamp grounding current.
The processor classifies the column indirect grounding currents according to the structural characteristics, and divides each column indirect grounding current into an iron core grounding current and a clamping piece grounding current according to the structural characteristics. Specifically, the calculated ground currents of the windings on the core with the ground screen are classified into clip ground currents, such as winding 1, winding 2, winding 3, and winding 4 in fig. 5, and winding 1 and winding 2 in fig. 7. The calculated ground currents for the windings without the ground screen are classified into core ground currents, such as winding 1, winding 2, winding 3, and winding 4 in fig. 6, and winding 3 and winding 4 in fig. 7.
Step 604, calculating the total core grounding current according to the current phase angle difference of each core grounding current and the core grounding current.
Specifically, when the grounding currents of the iron cores are integrated, the grounding currents of the iron cores can be directly added, and the obtained sum is used as the total grounding current of the iron cores; the total core grounding current can be obtained by calculating the phase angle difference between each core grounding current and each corresponding current.
Step 606, calculating the total clamp grounding current according to the clamp grounding currents and the current phase angle difference of the clamp grounding currents.
Similarly, when the grounding currents of the clamping pieces are integrated, the grounding currents of the clamping pieces can be directly added, and the obtained sum is used as the total grounding current of the clamping pieces; and calculating the phase angle difference between the grounding current of each clamping piece and the corresponding current to obtain the total grounding current of the clamping pieces.
In the embodiment, the total iron core grounding current and the total clamp grounding current are calculated by considering the current phase angle difference, and the influence of the current phase difference on each grounding current is fully considered, so that the accuracy of the obtained total iron core grounding current and the obtained total clamp grounding current is improved.
In fact, the values of the clamp ground current and the core ground current have a large difference in different structural characteristics. When the natural ester vegetable oil transformer has a ground screen, the ground current corresponding to the post structure is less than the ground current flowing into the clip. For example, if the natural ester vegetable oil transformer has a structure as shown in fig. 5 and is a double ground structure, the total clamp grounding current is:
（2）
Wherein I is g1 For the total clamp to ground current, I 1 Is the grounding current of the first column structure, I 2 Is the grounding current of the second column structure, U 1 For the winding voltage of the first column structure, C 1 Is the ground capacitance of the first column structure, U 2 Winding voltage of the second column structure, C 2 Is the capacitance to ground of the second pillar structure.
The total iron core grounding current corresponding to the double-ground-screen structure is I g2 The total iron core grounding current is smaller than or equal to the total clamping piece grounding current I g1 。
If the natural ester vegetable oil transformer has a structure as shown in fig. 6 and is of a non-ground structure, the total clamp is grounded with a current I g1 Is less than or equal to the total iron core grounding current I g2 Total core ground current I g2 Is I 1 And I 2 The sum of (2) is similar to the formula (2), and will not be described again here.
If the natural ester vegetable oil transformer has a structure as shown in fig. 7 and is of a single ground structure, the total clamp grounding current is I 1 The total core grounding current is I 2 ，I 1 And I 2 The calculation formula of (2) is shown in the formula (2), and will not be described in detail herein.
And 206, performing performance judgment on the natural ester vegetable oil transformer based on the standard parameters and the total grounding current.
The standard parameter is a test reference parameter of the natural ester vegetable oil transformer, and the test reference parameter can be obtained by testing the natural ester vegetable oil transformer when leaving a factory, or can be obtained according to historical experience and historical data analysis.
Specifically, the standard parameters are stored in the processor, and the standard parameters of the natural ester vegetable oil transformer with the corresponding model are called to be analyzed with the total grounding current obtained through calculation in the steps, so that the obtained analysis result is the performance judgment of the natural ester vegetable oil transformer.
In one embodiment, step 206 includes step 702 and step 704.
In step 702, a difference between the standard parameter and the total ground current is determined.
Specifically, the processor determines a difference value between the standard parameter and the total ground current. When the total grounding current comprises the total iron core grounding current and the total clamp grounding current, difference values can be calculated for the total iron core grounding current and the total clamp grounding current and corresponding standard parameters respectively, and the iron core current difference value and the clamp current difference value are obtained.
And step 704, performing performance judgment on the natural ester vegetable oil transformer according to the difference value and the preset error threshold value.
Specifically, the processor stores a preset error threshold, which can be set by a worker, and the larger the value of the preset error threshold is, the lower the precision requirement of the natural ester vegetable oil transformer is represented. The staff can change the preset error threshold according to the application environment and the use requirement of the natural ester vegetable oil transformer. And the processor is used for analyzing the calculated difference value by taking a preset error threshold value as a reference, and the analysis result is the performance judgment of the natural ester vegetable oil transformer.
For example, if the preset error threshold is a preset value, the difference value is compared with the preset value, and if the difference value is greater than the preset value, the processor determines that the performance of the natural ester vegetable oil transformer is insufficient, particularly the insulation performance is unreliable. If the difference value is smaller than or equal to the preset value, the processor judges that the performance of the natural ester vegetable oil transformer meets the requirement, and the insulation performance is reliable.
Optionally, when the difference value includes a core current difference value and a clip current difference value, the preset error threshold may also include a core error threshold and a clip error threshold. And comparing the iron core current difference value with an iron core error threshold value to obtain the iron core performance reliability. And comparing the clamp current difference value with a clamp error threshold value to obtain the clamp performance reliability. If the performance reliability of the iron core and the performance reliability of the clamping piece are reliable, the processor judges that the performance of the natural ester vegetable oil transformer meets the requirement, and the insulation performance is reliable. If one of the performance reliability of the iron core and the performance reliability of the clamping piece is unreliable, the processor judges that the performance of the natural ester vegetable oil transformer is insufficient, and particularly the insulation performance is unreliable.
Furthermore, if the difference between the difference value and the preset error threshold value is larger, the processor can further prove the reliability of the natural ester vegetable oil transformer by adopting other detection methods when judging that the performance of the natural ester vegetable oil transformer is insufficient.
The method for judging the performance of the natural ester vegetable oil transformer comprises the steps of obtaining the electrical parameters of the natural ester vegetable oil transformer, calculating the total grounding current of the natural ester vegetable oil transformer according to the electrical parameters, and judging the performance of the natural ester vegetable oil transformer based on the standard parameters and the total grounding current. The natural ester vegetable oil transformer performance judgment method has the advantages that the electrical parameters of the natural ester vegetable oil transformer are calculated, the performance judgment is carried out on the natural ester vegetable oil transformer, the interference of the electrical parameters of the traditional mineral oil transformer is avoided, the performance judgment can be carried out on the natural ester vegetable oil transformer more accurately, and the reliability of the natural ester vegetable oil transformer is guaranteed.
Based on the same inventive concept, the present application further provides a natural ester vegetable oil transformer detection system, as shown in fig. 1, where the natural ester vegetable oil transformer detection system includes a natural ester vegetable oil transformer 104 and a processor 102, where the natural ester vegetable oil transformer 104 is connected to the processor 102, and the processor 102 is configured to implement the steps of the method for determining performance of the natural ester vegetable oil transformer described in any of the foregoing embodiments.
In order to better understand the above solution, the following detailed explanation is made in connection with a specific embodiment in connection with the application scenario shown in fig. 1.
The utility model provides a natural ester vegetable oil transformer detecting system, includes natural ester vegetable oil transformer and treater, and the structure of natural ester vegetable oil transformer is as shown in fig. 5, is the natural ester vegetable oil transformer of single-phase double-column structure, adopts two ground screen structures, and two column structures all have the ground screen, and the ground screen is connected with the folder, and iron core and folder ground connection.
The processor obtains electrical parameters of the natural ester vegetable oil transformer, including winding voltage and capacitance to ground. And calculating the column-to-column ground current of the natural ester vegetable oil transformer according to the winding voltage and the capacitance to ground, and obtaining the structural characteristics of the natural ester vegetable oil transformer, namely the number and the positions of the ground screen. The processor classifies the grounding currents between the columns according to the structural characteristics to obtain iron core grounding currents and clamping piece grounding currents, calculates total iron core grounding currents according to current phase angle differences of the iron core grounding currents and the iron core grounding currents, and calculates total clamping piece grounding currents according to current phase angle differences of the clamping piece grounding currents and the clamping piece grounding currents. The total grounding current comprises total iron core grounding current and total clamping piece grounding current, the processor determines the difference value of the standard parameter and the total grounding current, and performance judgment is carried out on the natural ester vegetable oil transformer according to the difference value and a preset error threshold.
The method for judging the performance of the natural ester vegetable oil transformer comprises the steps of obtaining the electrical parameters of the natural ester vegetable oil transformer, calculating the total grounding current of the natural ester vegetable oil transformer according to the electrical parameters, and judging the performance of the natural ester vegetable oil transformer based on the standard parameters and the total grounding current. The natural ester vegetable oil transformer performance judgment method has the advantages that the electrical parameters of the natural ester vegetable oil transformer are calculated, the performance judgment is carried out on the natural ester vegetable oil transformer, the interference of the electrical parameters of the traditional mineral oil transformer is avoided, the performance judgment can be carried out on the natural ester vegetable oil transformer more accurately, and the reliability of the natural ester vegetable oil transformer is guaranteed.
It should be understood that, although the steps in the flowcharts related to the embodiments described above are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.
Based on the same inventive concept, the embodiment of the application also provides a natural ester vegetable oil transformer performance judging device for realizing the above-mentioned natural ester vegetable oil transformer performance judging method. The implementation scheme of the device for solving the problem is similar to that described in the above method, so the specific limitation of the embodiment of the device for judging the performance of the transformer with natural ester vegetable oil provided below can be referred to the limitation of the method for judging the performance of the transformer with natural ester vegetable oil hereinabove, and will not be repeated here.
In an exemplary embodiment, as shown in fig. 8, there is provided a natural ester vegetable oil transformer performance judging device, including: a parameter acquisition module 802, a calculation module 804, and a determination module 806, wherein:
a parameter acquisition module 802 for acquiring electrical parameters of the natural ester vegetable oil transformer.
The calculating module 804 is configured to calculate a total ground current of the natural ester vegetable oil transformer according to the electrical parameter.
A determining module 806 is configured to perform performance determination on the natural ester vegetable oil transformer based on the standard parameters and the total ground current.
In one embodiment, the calculating module 804 is further configured to calculate a column indirect ground current of the natural ester vegetable oil transformer according to the electrical parameter, obtain a structural feature of the natural ester vegetable oil transformer, and integrate the column indirect ground current according to the structural feature to obtain a total ground current of the natural ester vegetable oil transformer.
In one embodiment, the calculation module 804 is further configured to calculate an inter-column ground current of the natural ester vegetable oil transformer from the winding voltage and the capacitance to ground.
In one embodiment, the calculation module 804 is further configured to integrate the post-to-post ground current according to the structural feature to obtain a total core ground current and a total clip ground current.
In one embodiment, the calculating module 804 is further configured to classify the inter-column grounding current according to the structural feature to obtain an iron core grounding current and a clip grounding current, calculate a total iron core grounding current according to the current phase angle differences of each iron core grounding current and the iron core grounding current, and calculate a total clip grounding current according to the current phase angle differences of each clip grounding current and the clip grounding current.
In one embodiment, the determining module 806 is further configured to determine a difference value between the standard parameter and the total ground current, and perform performance determination on the natural ester vegetable oil transformer according to the difference value and the preset error threshold.
All or part of each module in the natural ester vegetable oil transformer performance judging device can be realized by software, hardware and a combination thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
In an exemplary embodiment, a computer device, which may be a terminal, is provided, and an internal structure thereof may be as shown in fig. 9. The computer device includes a processor, a memory, an input/output interface, a communication interface, a display unit, and an input means. The processor, the memory and the input/output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input/output interface. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The input/output interface of the computer device is used to exchange information between the processor and the external device. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless mode can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The computer program when executed by a processor is used for realizing a method for judging the performance of the natural ester vegetable oil transformer. The display unit of the computer device is used for forming a visual picture, and can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, can also be a key, a track ball or a touch pad arranged on the shell of the computer equipment, and can also be an external keyboard, a touch pad or a mouse and the like.
It will be appreciated by those skilled in the art that the structure shown in fig. 9 is merely a block diagram of a portion of the structure associated with the present application and is not limiting of the computer device to which the present application applies, and that a particular computer device may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.
In one exemplary embodiment, a computer device is provided comprising a memory and a processor, the memory having stored therein a computer program, the processor when executing the computer program performing the steps of:
acquiring electrical parameters of a natural ester vegetable oil transformer;
calculating the total grounding current of the natural ester vegetable oil transformer according to the electrical parameters;
and performing performance judgment on the natural ester vegetable oil transformer based on the standard parameters and the total grounding current.
In one embodiment, the processor when executing the computer program further performs the steps of:
and calculating the column indirect ground current of the natural ester vegetable oil transformer according to the electrical parameters, obtaining the structural characteristics of the natural ester vegetable oil transformer, and integrating the column indirect ground current according to the structural characteristics to obtain the total ground current of the natural ester vegetable oil transformer.
In one embodiment, the processor when executing the computer program further performs the steps of:
and calculating the column-to-column ground current of the natural ester vegetable oil transformer according to the winding voltage and the capacitance to ground.
In one embodiment, the processor when executing the computer program further performs the steps of:
and integrating the column-to-column grounding current according to the structural characteristics to obtain the total iron core grounding current and the total clamp grounding current.
In one embodiment, the processor when executing the computer program further performs the steps of:
classifying the grounding currents between the columns according to the structural characteristics to obtain iron core grounding currents and clamping piece grounding currents, calculating according to current phase angle differences of the iron core grounding currents and the iron core grounding currents to obtain total iron core grounding currents, and calculating according to current phase angle differences of the clamping piece grounding currents and the clamping piece grounding currents to obtain total clamping piece grounding currents.
In one embodiment, the processor when executing the computer program further performs the steps of:
and determining a difference value between the standard parameter and the total grounding current, and judging the performance of the natural ester vegetable oil transformer according to the difference value and a preset error threshold.
In one embodiment, a computer readable storage medium is provided having a computer program stored thereon, which when executed by a processor, performs the steps of:
Acquiring electrical parameters of a natural ester vegetable oil transformer;
calculating the total grounding current of the natural ester vegetable oil transformer according to the electrical parameters;
and performing performance judgment on the natural ester vegetable oil transformer based on the standard parameters and the total grounding current.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and calculating the column indirect ground current of the natural ester vegetable oil transformer according to the electrical parameters, obtaining the structural characteristics of the natural ester vegetable oil transformer, and integrating the column indirect ground current according to the structural characteristics to obtain the total ground current of the natural ester vegetable oil transformer.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and calculating the column-to-column ground current of the natural ester vegetable oil transformer according to the winding voltage and the capacitance to ground.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and integrating the column-to-column grounding current according to the structural characteristics to obtain the total iron core grounding current and the total clamp grounding current.
In one embodiment, the computer program when executed by the processor further performs the steps of:
classifying the grounding currents between the columns according to the structural characteristics to obtain iron core grounding currents and clamping piece grounding currents, calculating according to current phase angle differences of the iron core grounding currents and the iron core grounding currents to obtain total iron core grounding currents, and calculating according to current phase angle differences of the clamping piece grounding currents and the clamping piece grounding currents to obtain total clamping piece grounding currents.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and determining a difference value between the standard parameter and the total grounding current, and judging the performance of the natural ester vegetable oil transformer according to the difference value and a preset error threshold.
In one embodiment, a computer program product is provided comprising a computer program which, when executed by a processor, performs the steps of:
acquiring electrical parameters of a natural ester vegetable oil transformer;
calculating the total grounding current of the natural ester vegetable oil transformer according to the electrical parameters;
and performing performance judgment on the natural ester vegetable oil transformer based on the standard parameters and the total grounding current.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and calculating the column indirect ground current of the natural ester vegetable oil transformer according to the electrical parameters, obtaining the structural characteristics of the natural ester vegetable oil transformer, and integrating the column indirect ground current according to the structural characteristics to obtain the total ground current of the natural ester vegetable oil transformer.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and calculating the column-to-column ground current of the natural ester vegetable oil transformer according to the winding voltage and the capacitance to ground.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and integrating the column-to-column grounding current according to the structural characteristics to obtain the total iron core grounding current and the total clamp grounding current.
In one embodiment, the computer program when executed by the processor further performs the steps of:
classifying the grounding currents between the columns according to the structural characteristics to obtain iron core grounding currents and clamping piece grounding currents, calculating according to current phase angle differences of the iron core grounding currents and the iron core grounding currents to obtain total iron core grounding currents, and calculating according to current phase angle differences of the clamping piece grounding currents and the clamping piece grounding currents to obtain total clamping piece grounding currents.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and determining a difference value between the standard parameter and the total grounding current, and judging the performance of the natural ester vegetable oil transformer according to the difference value and a preset error threshold.
It should be noted that, the user information (including, but not limited to, user equipment information, user personal information, etc.) and the data (including, but not limited to, data for analysis, stored data, presented data, etc.) referred to in the present application are information and data authorized by the user or sufficiently authorized by each party, and the collection, use, and processing of the related data are required to meet the related regulations.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the various embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magnetic random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (Phase Change Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like. The databases referred to in the various embodiments provided herein may include at least one of relational databases and non-relational databases. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processors referred to in the embodiments provided herein may be general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic units, quantum computing-based data processing logic units, etc., without being limited thereto.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application shall be subject to the appended claims.
Claims (10)
1. A method for judging the performance of a natural ester vegetable oil transformer is characterized by comprising the following steps:
acquiring electrical parameters of a natural ester vegetable oil transformer;
calculating the total grounding current of the natural ester vegetable oil transformer according to the electrical parameters;
and performing performance judgment on the natural ester vegetable oil transformer based on the standard parameters and the total grounding current.
2. The method of claim 1, wherein said calculating a total ground current of said natural ester vegetable oil transformer from said electrical parameter comprises:
calculating the column-to-column ground current of the natural ester vegetable oil transformer according to the electrical parameters;
obtaining the structural characteristics of the natural ester vegetable oil transformer;
and integrating the column-to-column grounding current according to the structural characteristics to obtain the total grounding current of the natural ester vegetable oil transformer.
3. The method of claim 2, wherein the electrical parameters include winding voltage and capacitance to ground, and wherein calculating the column-to-column ground current of the natural ester vegetable oil transformer from the electrical parameters comprises:
and calculating the column-to-column ground current of the natural ester vegetable oil transformer according to the winding voltage and the capacitance to ground.
4. The method of claim 2, wherein the total ground current comprises a total core ground current and a total clip ground current, wherein the integrating the post-to-post ground current according to the structural feature results in a total ground current for the natural ester vegetable oil transformer, comprising:
and integrating the column-to-column grounding current according to the structural characteristics to obtain the total iron core grounding current and the total clamp grounding current.
5. The method of claim 4, wherein said integrating the post-to-post ground current according to the structural feature results in a total core ground current and a total clip ground current, comprising:
classifying the inter-column grounding current according to the structural characteristics to obtain iron core grounding current and clamping piece grounding current;
calculating to obtain total iron core grounding current according to the current phase angle difference of each iron core grounding current and each iron core grounding current;
and calculating to obtain the total clamp grounding current according to the current phase angle difference of each clamp grounding current and the clamp grounding current.
6. The method of claim 1, wherein the performance determination of the natural ester vegetable oil transformer based on the standard parameters and the total ground current comprises:
determining a difference value between a standard parameter and the total ground current;
and judging the performance of the natural ester vegetable oil transformer according to the difference value and a preset error threshold value.
7. A natural ester vegetable oil transformer performance judgment device, the device comprising:
the parameter acquisition module is used for acquiring the electrical parameters of the natural ester vegetable oil transformer;
The calculation module is used for calculating the total grounding current of the natural ester vegetable oil transformer according to the electrical parameters;
and the judging module is used for judging the performance of the natural ester vegetable oil transformer based on the standard parameters and the total grounding current.
8. A natural ester vegetable oil transformer detection system, characterized in that it comprises a natural ester vegetable oil transformer and a processor, said natural ester vegetable oil transformer being connected to said processor for implementing the steps of the method of any one of claims 1-6.
9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any of claims 1 to 6 when the computer program is executed.
10. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 6.
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| CN202311539020.1A CN117741515A (en) | 2023-11-17 | 2023-11-17 | Natural ester vegetable oil transformer performance judging method and device |
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| CN202311539020.1A CN117741515A (en) | 2023-11-17 | 2023-11-17 | Natural ester vegetable oil transformer performance judging method and device |
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