CN113625029B - Electric energy metering control method with positioning time service and protection functions - Google Patents
Electric energy metering control method with positioning time service and protection functions Download PDFInfo
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- G01—MEASURING; TESTING
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Abstract
The invention relates to an electric energy metering control method with positioning time service and protection functions, which is characterized by comprising the following steps of: the method comprises the functions of Beidou or GPS time service positioning, voltage current transformer transformation ratio setting, protection value setting, position information setting, voltage current information acquisition, abnormal or fault condition analysis and calculation processing, acquisition information storage and wave recording, electric energy metering, power carrier information uploading and the like, and achieves the functions of electric energy metering, system fault diagnosis and analysis, system time service and positioning of a power supply station area and platform area maintenance path planning thereof.
Description
Technical Field
The invention relates to the technical fields of electric energy metering of an intelligent power system platform area, a low-voltage power utilization system and the like and intelligent diagnosis, protection, analysis and positioning time service of the system, in particular to an electric energy metering control method with positioning time service and protection functions.
Background
Along with the development of the construction of the power system, the application of the power system is also expanded to all corners of the country. And are more ubiquitous with electrical energy metering systems. Particularly, for remote mountain areas, the areas can be distributed in places where people rarely get to, once the system is in a problem, the system can cause the conditions of finding reasons, overhauling and recovering the power supply period to be particularly long. Aiming at the situation, the invention provides an integrated metering device capable of performing intelligent diagnosis, analysis, positioning, time service and protection, communication, wave recording and the like, monitors, diagnoses and protects the platform region in all directions, and can rapidly upload fault reasons and platform region position information to a master monitoring and dispatching center after fault outage occurs, so that the fault can be solved in the first time, and the power supply reliability is greatly improved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the electric energy metering control method with the positioning time service and protection functions, which can analyze the problems in real time under the condition that the system is abnormal or has faults, upload the problems to the monitoring and dispatching center to give out specific abnormal fault reasons and position information, and enable the monitoring and dispatching center to quickly discharge corresponding operation and maintenance personnel and path planning information according to the abnormal fault reasons and the position information so as to solve the faults in time.
In order to solve the technical problems, the invention adopts the following technical scheme: an electric energy metering control method with positioning time service and protection functions is characterized in that: the method comprises the functions of Beidou or GPS time service positioning, voltage current transformer transformation ratio setting, protection value setting, position information setting, voltage current information acquisition, abnormal or fault condition analysis and calculation processing, acquisition information storage and wave recording, electric energy metering and power carrier information uploading, and under the functions, the functions of electric energy metering, system fault diagnosis and analysis, system time service and positioning of a power supply station area and station area maintenance path planning are realized; the method comprises the following steps:
setting relevant parameters of a system, including setting the transformation ratio of a voltage transformer and a current transformer, wherein if the transformation ratio is 0, the upper limit action value and the lower limit action value of the voltage transformer and the current transformer are indicated; setting location information of a station area;
secondly, acquiring a system voltage and current value through a timing interruption 1, and storing the acquired voltage and current value into different areas according to the normal, abnormal or fault state of the system for analyzing the fault condition of the system;
thirdly, calculating the voltage and current amplitude and the effective value of the system according to the acquired voltage and current real-time value, calculating the electric energy and displaying the electric energy;
judging whether the voltage and current value is out of limit or not, determining the running state of the system according to the amplitude condition, if the system is judged to run to an abnormal condition, comparing and analyzing the voltage and current value and the waveform acquired under the condition with the voltage and current condition under the normal condition, primarily giving out the cause of the abnormal condition of the system, uploading the cause and the result of the abnormal condition of the system to a centralized unit through a carrier module, uploading the cause and the result to a monitoring center by the centralized unit, and processing the abnormal condition of the system;
fifthly, when judging that the system runs to a fault state, firstly protecting the metering device to act on the outlet breaker to disconnect the fault circuit, avoiding further expansion of accidents, meanwhile, comparing and analyzing the collected voltage and current value and waveform according to the situation with the voltage and current situation under normal conditions to give out a system fault reason, uploading the analysis reason and result to the centralized unit through the carrier module, uploading the result to the monitoring center by the centralized unit, and processing the system fault condition;
sixthly, acquiring Beidou or GPS time information at fixed time through the fixed time interruption 2, wherein the Beidou or GPS time information is used for system time service; for the acquired time information, calculating the error between the time information of the time service and the time information on the original system by the system, and increasing the time service acquisition time interval when the time error is less than or equal to 10 ms; if the time error is greater than 10ms and less than or equal to 50ms, the current time service acquisition time interval is kept; if the time error is greater than 50ms, the system accelerates the time service acquisition time interval. In this case, the system is operated more efficiently.
Preferably, the step of setting the system information includes setting a transformation ratio of a voltage-current transformer configured by the system, and when the transformation ratio is set to zero, the electric energy metering device directly collects voltage and current without collecting the voltage and current by the voltage-current transformer; meanwhile, the location information of the platform area needs to be set, so that when the system fails, the location of the platform area is sent in time, and the system is convenient for path planning; and voltage and current action thresholds under abnormal and fault conditions of the system are respectively set, so that the system can accurately judge the running condition and analyze and judge.
Preferably, in the second step, the electric energy metering device is pre-placed with voltage and current data and waveforms under normal, abnormal and fault conditions, the data and waveforms are used as standard waveforms for comparison and judgment of data collected in the operation process, the data can be used as a standard database of the system, and the data can be supplemented and perfected according to the operation condition of the system. Meanwhile, the electric energy metering system collects voltage and current information of the system at regular time, the collected voltage and current values are respectively stored into a normal area, an abnormal area and a fault area according to the running state of the system, when the system is abnormal or has a fault condition, the collected waveforms are conveniently compared with standard waveforms implanted in advance, and a preliminary analysis result is automatically given out by the system according to the comparison result. Meanwhile, the data stored in different areas are used as standard data and waveforms for later use according to system analysis, and the standard data and waveforms can be automatically supplemented into a standard database.
Preferably, in the fourth step, the collected voltage and current information is calculated, how much electric energy is consumed is calculated, whether the voltage and current value exceeds the preset upper and lower voltage and current thresholds is judged, and for the condition that the voltage and current value exceeds different thresholds, the system automatically sets the running state of the system, and the running state is divided into three types: normal operation state, abnormal operation state and fault operation state; the first two operating conditions are determined to cause the system to operate normally without tripping. If the system is in an abnormal operation state, the system can compare and analyze the data and waveforms acquired in real time with the data in the abnormal standard library, give out the reason for causing the abnormality according to the comparison and analysis result, upload the abnormality reason, the early warning signal and the station location information to the centralized unit through the power carrier module, upload the centralized unit to the monitoring and dispatching center, and prompt the operation and maintenance personnel to make maintenance arrangement in time. When the acquired information exceeds the threshold value of the fault alarm, and the threshold value is not an instantaneous value but a stable value, namely the threshold value exceeds the fault threshold value after three continuous acquisitions, the control unit can enable the system to act on the outlet relay, so that the fault circuit is cut off. When the circuit is cut off, the system can also compare the acquired data waveform with the standard fault data waveform stored in the system in advance to give out a fault reason, and upload the fault reason, the fault data, the fault action signals and the station position information to the centralized unit through the power carrier module, and upload the fault reason, the fault data, the fault action signals and the station position information to the monitoring and dispatching center through the centralized unit to prompt operation and maintenance personnel to make fault maintenance arrangement in time.
Under the conditions of abnormality and fault, the system can send out position information, and after the monitoring and dispatching center receives the position information, the path planning information leading to the fault point of the station area can be automatically given out.
Compared with the prior art, the invention has the following advantages: the electric energy metering control method with the positioning time service and protection functions has the advantages that the problems can be analyzed in real time under the condition that the system is abnormal or has faults, the problems are uploaded to the monitoring and dispatching center, specific abnormal fault reasons and position information are given out, and the monitoring and dispatching center discharges corresponding operation and maintenance personnel and path planning information as soon as possible according to the abnormal fault reasons and the position information, so that the faults are solved in time.
Drawings
Fig. 1 is a main control flow chart of the present invention.
Fig. 2 is a flow chart of the timer interrupt 1 interrupt of the present invention.
FIG. 3 is a flow chart of the timer interrupt 2 interrupt of the present invention.
Description of the embodiments
The present invention will be described in further detail with reference to examples.
As shown in fig. 1 to 3: an electric energy metering control method with positioning time service and protection functions is characterized in that: the control method comprises the functions of Beidou or GPS time service positioning, voltage current transformer transformation ratio setting, protection value setting, position information setting, voltage current information acquisition, abnormal or fault condition analysis and calculation processing, acquisition information storage and wave recording, electric energy metering and power carrier information uploading, and under the functions, the functions of electric energy metering, system fault diagnosis and analysis, system time service and positioning of a power supply station area and maintenance path planning of the power supply station area are realized; the method comprises the following steps:
firstly, setting system information, including setting the transformation ratio of a voltage-current transformer configured by the system, when the transformation ratio is set to zero, indicating that the electric energy metering device directly collects voltage and current, and not needing to collect through the voltage-current transformer, and meanwhile, needing to set platform position information, so that when the system fails, the platform position can be sent in time, and the system can conveniently conduct path planning; and voltage and current action thresholds under abnormal and fault conditions of the system are respectively set, so that the system can accurately judge the running condition and analyze and judge.
The electric energy metering device is pre-arranged with voltage and current data and waveforms under normal, abnormal and fault conditions, the data and waveforms are used as standard waveforms for comparing and judging the data collected in the operation process, and the partial data can be used as a standard database of the system and can be supplemented and perfected according to the operation condition of the system.
Meanwhile, the electric energy metering system is interrupted at fixed time 1 to acquire voltage and current information of the system, the acquired voltage and current values are respectively stored into a normal area, an abnormal area and a fault area according to the running state of the system, when the system is abnormal or has a fault condition, the acquired waveforms are conveniently compared with standard waveforms implanted in advance, and a preliminary analysis result is automatically given out by the system according to the comparison result.
Meanwhile, the data stored in different areas are used as standard data and waveforms for later use according to system analysis, and the standard data and waveforms can be automatically supplemented into a standard database. Calculating the collected voltage and current information, judging whether the voltage and current value exceeds the preset upper and lower voltage and current thresholds, and automatically setting the system running state for the system exceeding different thresholds, wherein the running state is divided into three types: normal operation state, abnormal operation state and fault operation state; the first two operating conditions are determined to cause the system to operate normally without tripping. If the system is in an abnormal operation state, the system can compare and analyze the data acquired in real time and the data in the waveform and abnormal standard library.
And according to the comparison and analysis result, giving out the reason causing the abnormality, uploading the abnormality reason, the early warning signal and the station position information to a centralized unit through a power carrier module, and uploading the information to a monitoring and dispatching center by the centralized unit to prompt operation and maintenance personnel to make maintenance arrangement in time.
When the acquired information exceeds the threshold value of fault alarm, and the acquired value is not an instantaneous value but a stable value, namely the acquired value exceeds the threshold value of fault after three times of continuous acquisition, the control unit can enable the system to act on the outlet relay, so that the fault circuit is cut off.
When the circuit is cut off, the system can also compare the acquired data waveform with the standard fault data waveform stored in the system in advance to give out a fault reason, and upload the fault reason, the fault data, the fault action signals and the station position information to the centralized unit through the power carrier module, and upload the fault reason, the fault data, the fault action signals and the station position information to the monitoring and dispatching center through the centralized unit to prompt operation and maintenance personnel to make fault maintenance arrangement in time. Under the conditions of abnormality and fault, the system can send out position information, and after the monitoring and dispatching center receives the position information, the path planning information leading to the fault point of the station area can be automatically given out.
The system can collect Beidou or GPS time information at regular time. The system collects Beidou or GPS time information through the timing interruption 2 and is used for system time service. For the acquired time information, calculating the error between the time information of the time service and the time information on the original system by the system, and increasing the time service time acquisition interval when the time error is less than or equal to 10 ms; if the time error is greater than 10ms and less than or equal to 50ms, the current time service acquisition time interval is kept; if the time error is greater than 50ms, the system accelerates the time service acquisition time interval. In this case, the system is operated more efficiently.
The electric energy metering control method with the positioning time service and protection functions has the advantages that the problems can be analyzed in real time under the condition that the system is abnormal or has faults, the problems are uploaded to the monitoring and dispatching center, specific abnormal fault reasons and position information are given out, and the monitoring and dispatching center discharges corresponding operation and maintenance personnel and path planning information as soon as possible according to the abnormal fault reasons and the position information, so that the faults are solved in time.
The above description is only of the preferred embodiments of the present invention, and is not intended to limit the present invention. Any simple modification, variation and equivalent variation of the above embodiments according to the technical substance of the invention still fall within the scope of the technical solution of the invention.
Claims (5)
1. An electric energy metering control method with positioning time service and protection functions is characterized in that: the method comprises the functions of Beidou or GPS time service positioning, voltage current transformer transformation ratio setting, protection value setting, position information setting, voltage current information acquisition, abnormal or fault condition analysis and calculation processing, acquisition information storage and wave recording, electric energy metering and power carrier information uploading, and under the functions, the functions of electric energy metering, system fault diagnosis and analysis, system time service and positioning of a power supply station area and station area maintenance path planning are realized;
the method comprises the following steps:
setting relevant parameters of a system, including setting the transformation ratio of a voltage transformer and a current transformer, wherein if the transformation ratio is 0, the upper limit action value and the lower limit action value of the voltage transformer and the current transformer are indicated; setting location information of a station area;
secondly, acquiring a system voltage and current value through a timing interruption 1, and storing the acquired voltage and current value into different areas according to the normal, abnormal or fault state of the system for analyzing the fault condition of the system;
thirdly, calculating the voltage and current amplitude and the effective value of the system according to the acquired voltage and current real-time value, calculating the electric energy and displaying the electric energy;
judging whether the voltage and current value is out of limit or not, determining the running state of the system according to the amplitude condition, if the system is judged to run to an abnormal condition, comparing and analyzing the voltage and current value and the waveform acquired under the condition with the voltage and current condition under the normal condition, primarily giving out the cause of the abnormal condition of the system, uploading the cause and the result of the abnormal condition of the system to a centralized unit through a carrier module, uploading the cause and the result to a monitoring center by the centralized unit, and processing the abnormal condition of the system;
fifthly, when judging that the system runs to a fault state, firstly protecting the metering device to act on the outlet breaker to disconnect the fault circuit, avoiding further expansion of accidents, meanwhile, comparing and analyzing the collected voltage and current values and waveforms according to the situation with the voltage and current situation under normal conditions to give out a system fault reason, uploading the system fault reason and result to the centralized unit through the carrier module, and uploading the system fault reason and result to the monitoring center through the centralized unit to process the system fault situation;
step six, the Beidou or GPS time information is acquired at regular time through the timing interruption 2 and used for system time service, the system calculates the error between the time information of time service and the time information on the original system for the acquired time information, and when the time error is less than or equal to 10ms, the time interval of time service acquisition is increased; if the time error is greater than 10ms and less than or equal to 50ms, the current time service acquisition time interval is kept; if the time error is greater than 50ms, the system accelerates the time service acquisition time interval, and in this case, the operation efficiency of the system is higher.
2. The electric energy metering control method with positioning time service and protection functions according to claim 1, which is characterized in that: the first step is to set system information, including setting the transformation ratio of a voltage-current transformer configured by a system, and when the transformation ratio is set to zero, indicating that the electric energy metering device directly collects voltage and current without collecting the voltage and current by the voltage-current transformer; meanwhile, the location information of the platform area needs to be set, so that when the system fails, the location of the platform area is sent in time, and the system is convenient for path planning; and voltage and current action thresholds under abnormal and fault conditions of the system are respectively set, so that the system can accurately judge the running condition and analyze and judge.
3. The electric energy metering control method with positioning time service and protection functions according to claim 1, which is characterized in that: the second step is that the electric energy metering device is pre-arranged with voltage and current data and waveforms under normal, abnormal and fault conditions, the data and waveforms are used as standard waveforms for comparison and judgment, the data can be used as a standard database of the system, and can be supplemented and perfected according to the running condition of the system, meanwhile, the electric energy metering system regularly collects the voltage and current information of the system, and according to the running state of the system, the collected voltage and current values are respectively stored into a normal area, an abnormal area and a fault area, so that when the system is abnormal or fault, the collected waveforms and the pre-implanted standard waveforms are conveniently compared, the system automatically gives out a preliminary analysis result according to the comparison result, meanwhile, the data stored in different areas are used as standard data and waveforms for later period according to system analysis, and can be automatically supplemented into the standard database as standard data and waveforms.
4. The electric energy metering control method with positioning time service and protection functions according to claim 1, which is characterized in that: in the fourth step, the collected voltage and current information is calculated, the amount of consumed electric energy is calculated, whether the voltage and current value exceeds the preset upper and lower voltage and current thresholds is judged, and for the condition that the voltage and current value exceeds different thresholds, the system can automatically set the running state of the system, and the running state is divided into three types: normal operation state, abnormal operation state and fault operation state; if the system is in an abnormal operation state, the system compares the data acquired in real time with the data in the waveform and abnormal standard library, gives out the reason for abnormality according to the comparison and analysis result, uploads the abnormality reason, the early warning signal and the station position information to the centralized unit through the power carrier module, uploads the information to the monitoring and dispatching center through the centralized unit, prompts the operation and maintenance personnel to make maintenance arrangement in time, and when the acquired information exceeds the threshold value of fault alarm, the threshold value is not a transient value, but is a stable value, namely the threshold value exceeds the fault threshold value after three times of continuous acquisition, the control unit enables the system to act on the outlet relay, so that the fault circuit is cut off, and when the circuit is cut off, the system also compares the acquired data waveform with the standard fault data waveform stored in the system in advance, gives out the fault reason, the fault data, the fault action signal and the station position information to the centralized unit through the power carrier module, and the centralized unit is uploaded to the monitoring and dispatching center to prompt the operation and maintenance personnel to make maintenance arrangement in time.
5. The electric energy metering control method with positioning time service and protection functions according to claim 4, which is characterized in that: under the conditions of abnormality and fault, the system can send out position information, and after the monitoring and dispatching center receives the position information, the path planning information leading to the fault point of the station area can be automatically given out.
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