CN110863957A - Wind turbine generator unit unplanned shutdown prevention device for predicting maintenance period and design method - Google Patents
Wind turbine generator unit unplanned shutdown prevention device for predicting maintenance period and design method Download PDFInfo
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- 238000013461 design Methods 0.000 title claims abstract description 23
- 238000012423 maintenance Methods 0.000 title claims abstract description 21
- 230000002265 prevention Effects 0.000 title description 2
- 230000001133 acceleration Effects 0.000 claims abstract description 38
- 238000007405 data analysis Methods 0.000 claims abstract description 28
- 238000001514 detection method Methods 0.000 claims abstract description 28
- 238000004891 communication Methods 0.000 claims abstract description 21
- 238000005259 measurement Methods 0.000 claims description 8
- 238000011161 development Methods 0.000 claims description 6
- 238000010248 power generation Methods 0.000 description 10
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/50—Maintenance or repair
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The invention relates to a device for preventing unplanned shutdown of a wind turbine generator in a predicted maintenance period and a design method, and belongs to the field of logic design of wind turbines. The invention comprises an amplitude vibration measuring point group for detecting vibration amplitude signals of all main components of a wind turbine generator, an acceleration vibration measuring point group for detecting vibration acceleration signals of all main components of the wind turbine generator, a vibration detection acquisition instrument, a data analysis server, a communication cable and an alternating current power supply, and is characterized in that: the amplitude vibration measuring point group and the acceleration vibration measuring point group are connected with a vibration detection and acquisition instrument, the vibration detection and acquisition instrument is connected with one end of a communication cable, the other end of the communication cable is connected with a data analysis server, and the data analysis server is connected with an alternating current power supply.
Description
Technical Field
The invention relates to a device for preventing unplanned shutdown of a wind turbine generator in a predicted maintenance period and a design method, and belongs to the field of logic design of wind turbines.
Background
In recent years, the annual growth rate of the utilization of global renewable energy sources reaches 25%, the utilization of the renewable energy sources is dominated by the power industry, and the power generation proportion of non-hydraulic renewable energy sources is expanded by two times. Statistically, the consumption of renewable energy in 2030 will exceed 22 hundred million t oil equivalents. Wind power generation is the most mature renewable energy power generation except hydroelectric power generation, and the installed capacity of the wind power generation accounts for the vast majority of the total installed capacity of the whole renewable energy power generation.
The wind generating set comprises a wind wheel and a generator; the wind wheel comprises blades, a hub, a reinforcing member and the like; it has the functions of wind driven blade rotation to generate electricity, generator head rotation, etc. The wind power generation power supply comprises a wind generating set, a tower frame for supporting the generating set, a storage battery charging controller, an inverter, an unloader, a grid-connected controller, a storage battery pack and the like.
While the wind turbine with complex equipment is rapidly developed, the monitoring of the wind turbine is still in the development stage.
The wind power control system comprises a field wind generating set control unit, a high-speed annular redundant optical fiber Ethernet, a remote upper computer operator station and the like. The control unit of the on-site wind generating set is the core of each fan control, and the functions of parameter monitoring, automatic power generation control, equipment protection and the like of the set are realized; each wind generating set is provided with an on-site HMI (human machine interface) to realize on-site operation, debugging and maintenance of the set; the high-speed ring-shaped redundant optical fiber Ethernet is a data highway of the system and transmits real-time data of a unit to an interface of an upper computer; the upper computer operator station is the operation monitoring core of the wind power plant, has the functions of complete unit state monitoring, parameter alarming, real-time/historical data recording and displaying and the like, and realizes the operation monitoring and operation of all units of the wind power plant by an operator in a control room.
The field control station of the wind power control system comprises: the system comprises a tower base main controller cabinet, an engine room control station cabinet, a variable pitch system, a converter system, a field touch screen station, an Ethernet switch, a field bus communication network, a UPS power supply, an emergency shutdown backup system and the like.
1. Control station of tower base
A tower control station, namely a main controller cabinet, is the core of wind turbine equipment control and mainly comprises a controller, an I/O module and the like. The controller hardware adopts a 32-bit processor, the system software adopts a strong real-time operating system, and various complex main control logics for operating the unit are communicated with the cabin controller cabinet, the variable pitch system and the converter system in real time through a field bus so as to enable the unit to operate in the optimal state.
The configuration of the controller adopts configuration software with rich functions and friendly interface, adopts a configuration mode conforming to IEC61131-3 standard, and comprises the following steps: function diagrams (FBD), instruction Lists (LD), sequential function blocks (SFC), ladder diagrams, structured texts and other configuration modes.
2. Cabin control station
The cabin control station collects signals such as temperature, pressure, rotating speed and environmental parameters measured by the unit sensor, the signals are communicated with the main unit control station through a field bus, the main controller controls the machine frame through the cabin to realize functions of yawing, cable releasing and the like of the unit, and in addition, various auxiliary motors, oil pumps and fans in the cabin are controlled to enable the unit to work in the best state.
3. Variable pitch system
The wind turbine generator set above the large MW level usually adopts a hydraulic pitch control system or an electric pitch control system. The pitch system is characterized in that a front-end controller controls a pitch driving device of 3 fan blades, the pitch driving device is an execution unit of a main controller, and CANOPEN is adopted to communicate with the main controller so as to adjust the pitch of the 3 blades to work in the optimal state. The variable pitch system is protected by a backup power system and a safety chain, and emergency shutdown under emergency working conditions is guaranteed.
4. Converter system
At present, a large-scale wind generating set generally adopts a high-power converter to realize conversion of power generation energy, and a converter system is communicated with a main controller through a field bus to realize regulation of the rotating speed, active power and reactive power of the set.
5. On-site touch screen station
The on-site touch screen station is an on-site operation station for unit monitoring, realizes functions of on-site parameter setting, equipment debugging, maintenance and the like of the wind turbine unit, and is an on-site upper computer operator station of a unit control system.
6. Ethernet exchanger (HUB)
The system adopts an industrial Ethernet switch to realize the connection of the controller, the field touch screen and the remote control center network of a single unit. The field cabinet is connected with the upper computer in the remote control room by a common twisted pair cable.
7. On-site communication network
The main controller has various field bus interfaces such as CANOPEN, PROFIBUS, MODBUS, Ethernet and the like, and can be configured according to the actual requirements of projects.
8. UPS power supply
The UPS is used for ensuring that the unit control system, the emergency protection system and the related execution unit supply power under the condition that the external power supply of the system is cut off.
The safety and reliability of the control system of the wind generating set are related to whether the wind generating set can generate power normally or not, and even affect the long-term safe and reliable operation of the wind power plant. The large-scale wind generating set adopts necessary means through the safety design of the control system, improves the reliability of the control system as much as possible, ensures that the system has no fault or few faults as much as possible, and repairs the system at the fastest speed after the fault occurs, so that the system can be recovered to work normally.
The wind turbine generator system is huge in equipment, complex in structure, various in potential safety hazard, and various in potential safety hazard reasons, in recent years, accidents such as unplanned shutdown and even tower collapse of the wind turbine generator system caused by faults of the wind turbine generator system occur for many times, so that a device for predicting and maintaining the wind turbine generator system in a maintenance period to avoid unplanned shutdown of the wind turbine generator system and a logic design method are urgently needed to protect the wind turbine generator system, the time domain trend of faults is judged in advance in the equipment fault development process, and maintenance is arranged in advance.
At present, no relevant research is carried out on a device for preventing the unplanned shutdown of a wind turbine generator in the period of the predicted maintenance of the wind turbine generator and a design method.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a wind turbine generator prediction overhaul period non-planned outage avoiding device with a reasonable structural design and a design method.
The technical scheme adopted by the invention for solving the problems is as follows: this wind turbine generator system prediction overhauls cycle and avoids unit unplanned device that stops, including the amplitude vibration measurement point crowd that is used for detecting each main part vibration amplitude signal of wind turbine generator system, the acceleration vibration measurement point crowd that is used for detecting each main part vibration acceleration signal of wind turbine generator system, vibration detection collection appearance, data analysis server, communication cable and alternating current power supply, its structural feature lies in: the amplitude vibration measuring point group and the acceleration vibration measuring point group are connected with a vibration detection and acquisition instrument, the vibration detection and acquisition instrument is connected with one end of a communication cable, the other end of the communication cable is connected with a data analysis server, and the data analysis server is connected with an alternating current power supply.
Further, the amplitude vibration measuring point group and the acceleration vibration measuring point group are both positioned in front of the vibration detection acquisition instrument.
Further, the vibration detection and acquisition instrument is used for detecting the vibration of the wind turbine generator when the wind turbine generator operates, and data are input into the data analysis server.
Furthermore, the data analysis server is distributed in a cabin control cabinet of the wind turbine generator and used for judging whether the wind turbine generator is in fault and the fault development speed and judging the time for arranging maintenance in advance.
Furthermore, the amplitude vibration measuring point group, the acceleration vibration measuring point group, the vibration detection and acquisition instrument and the data analysis server are connected with an alternating current power supply through communication cables.
Furthermore, the communication cable is in a soft-wired and hard-wired redundant design, so that the protection is more reliable.
Further, another technical object of the present invention is to provide a design method for a wind turbine generator predictive maintenance cycle device that avoids unplanned outage of the wind turbine generator.
The technical purpose of the invention is realized by the following technical scheme.
A design method of a device for preventing unplanned shutdown of a wind turbine in a predicted maintenance period is characterized by comprising the following steps: the design method comprises the following steps:
1) detecting vibration amplitude signals of all main components of the wind turbine generator;
2) detecting that the same type of measuring points in vibration amplitude signals of all main components of the wind turbine generator set are true through a three-to-two judgment signal;
3) detecting vibration acceleration signals of all main components of the wind turbine generator;
4) detecting a signal of 'true' of a similar measuring point in vibration acceleration signals of all main components of the wind turbine generator through a two-out-of-three judgment signal;
5) the amplitude vibration measuring point group and the acceleration vibration measuring point group acquire data through a vibration detection acquisition instrument, and the data acquired by the vibration detection acquisition instrument are input into a data analysis server;
6) the data analysis server judges the time for the vibration amplitude and the vibration acceleration of each main component of the wind turbine generator to develop to a high value according to the vibration amplitude and the time domain waveform of the vibration acceleration of each main component of the wind turbine generator;
7) and (4) scheduling a maintenance time period by combining the load curve of the wind power plant.
Further, in the step 6), the fixed value which endangers the safety of the wind turbine generator is continuously operated.
Compared with the prior art, the invention has the following advantages:
1. the wind power generation system is complete in structure, compact in system, strong in practicability, suitable for being used in the wind power industry, and has operability, and practice proves that the method is a good method.
2. The method has scientificity, and can meet the requirement of protecting the wind turbine generator in case of danger.
3. The method has the advantages of high sensitivity, high calculation speed, visual and visual result and the like.
4. The method has strong operability, indexes are reasonably based on scientific consideration, original data are convenient to obtain, and the method has operability.
5. The comparability is strong.
6. The method is highly conductive, quantifies statistics, and can provide data for scientific research.
7. Has wide applicability.
Drawings
Fig. 1 is a schematic connection relationship diagram of a device for preventing unplanned shutdown of a wind turbine generator in a predicted overhaul period according to an embodiment of the invention.
In the figure: the device comprises an amplitude vibration measuring point group 1, an acceleration vibration measuring point group 2, a vibration detection and acquisition instrument 3, a data analysis server 4, a communication cable 5 and an alternating current power supply 6.
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
Examples are given.
Referring to fig. 1, it should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for understanding and reading the disclosure, and are not used for limiting the conditions that the present invention can be implemented, so they have no technical essence, and any structural modifications, ratio changes or size adjustments should fall within the scope of the present invention without affecting the function and the achievable purpose of the present invention. In the present specification, the terms "upper", "lower", "left", "right", "middle" and "one" are used for clarity of description, and are not used to limit the scope of the present invention, and the relative relationship between the terms and the relative positions may be changed or adjusted without substantial technical changes.
The wind turbine generator system prediction overhaul period unit unplanned shutdown avoiding device comprises an amplitude vibration measuring point group (1) for detecting vibration amplitude signals of all main components of the wind turbine generator system, an acceleration vibration measuring point group (2) for detecting vibration acceleration signals of all main components of the wind turbine generator system, a vibration detection acquisition instrument (3), a data analysis server (4), a communication cable (5) and an alternating current power supply (6), wherein the amplitude vibration measuring point group (1) and the acceleration vibration measuring point group (2) are connected with the vibration detection acquisition instrument (3), the vibration detection acquisition instrument (3) is connected with one end of the communication cable (5), the other end of the communication cable (5) is connected with the data analysis server (4), and the data analysis server (4) is connected with the alternating current power supply (6).
In this embodiment, the amplitude vibration measurement point group (1) and the acceleration vibration measurement point group (2) are both located in front of the vibration detection acquisition instrument (3).
The vibration detection and acquisition instrument (3) in the embodiment is used for detecting the vibration of the wind turbine generator when the wind turbine generator operates, and data is input into the data analysis server (4).
The data analysis server (4) in the embodiment is distributed in a control cabinet of the cabin of the wind turbine generator and used for judging whether the wind turbine generator is in fault or not, judging the fault development speed and judging the time for arranging maintenance in advance.
In this embodiment, the amplitude vibration measurement point group (1), the acceleration vibration measurement point group (2), the vibration detection acquisition instrument (3), and the data analysis server (4) are connected to the ac power supply (6) through the communication cable (5).
The communication cable (5) in the embodiment is in a soft-wired and hard-wired redundant design, so that the protection is more reliable.
The design method of the device for avoiding unplanned shutdown of the wind turbine in the embodiment of the invention for the wind turbine predicted maintenance period comprises the following steps:
1) detecting vibration amplitude signals of all main components of the wind turbine generator;
2) detecting that the same type of measuring points in vibration amplitude signals of all main components of the wind turbine generator set are true through a three-to-two judgment signal;
3) detecting vibration acceleration signals of all main components of the wind turbine generator;
4) detecting a signal of 'true' of a similar measuring point in vibration acceleration signals of all main components of the wind turbine generator through a two-out-of-three judgment signal;
5) the amplitude vibration measuring point group (1) and the acceleration vibration measuring point group (2) acquire data through a vibration detection acquisition instrument (3), and the data acquired by the vibration detection acquisition instrument (3) are input into a data analysis server (4);
6) the data analysis server (4) judges the time for the vibration amplitude and the vibration acceleration of each main component of the wind turbine generator to develop to a high value according to the vibration amplitude and the time domain waveform of the vibration acceleration of each main component of the wind turbine generator;
7) and (4) scheduling a maintenance time period by combining the load curve of the wind power plant.
8. The design method of the device for avoiding the unplanned shutdown of the wind turbine generator in the predicted overhaul period according to claim 7, characterized by comprising the following steps: and 6), continuously operating the fixed value which endangers the safety of the wind turbine generator.
When the wind turbine generator is in operation, the wind turbine generator breaks down, and the control system cannot control the wind turbine generator to operate within a normal range, in order to prevent damage to the wind turbine generator, the wind turbine generator predicts the maintenance period, avoids an unplanned shutdown device of the wind turbine generator and a design method to prejudge the time domain trend of fault development, arranges maintenance in advance, and avoids expansion of accidents.
Monitoring vibration amplitude and vibration acceleration parameters of main components of the wind turbine, and when the parameters exceed the operation limit values, providing the following functions by the system:
1) and (5) alarming when the vibration amplitude of each main component of the wind turbine exceeds a limit value.
2) And (5) alarming when the vibration acceleration of each main part of the wind turbine exceeds a limit value.
3) According to the vibration amplitude and the time domain waveform of the vibration acceleration of each main component of the wind turbine generator, the time for the vibration amplitude and the vibration acceleration of each main component of the wind turbine generator to develop to a high value (a constant value endangering the safety of the wind turbine generator when the main component of the wind turbine generator continues to operate) is judged, and a maintenance time period is arranged by combining a load curve of a wind power plant.
In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an illustration of the structure of the present invention. Equivalent or simple changes in the structure, characteristics and principles of the invention are included in the protection scope of the patent. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (8)
1. The utility model provides a wind turbine generator system prediction overhauls cycle and avoids unit unplanned device that stops, includes amplitude vibration measurement point crowd (1) that is used for detecting each main part vibration amplitude signal of wind turbine generator system, acceleration vibration measurement point crowd (2) that are used for detecting each main part vibration acceleration signal of wind turbine generator system, vibration detection collection appearance (3), data analysis server (4), communication cable (5) and alternating current power supply (6), its characterized in that: amplitude vibration survey point crowd (1) and acceleration vibration survey point crowd (2) all are connected with vibration detection collection appearance (3), vibration detection collection appearance (3) are connected with the one end of communication cable (5), the other end and the data analysis server (4) of communication cable (5) are connected, data analysis server (4) are connected with alternating current power supply (6).
2. The wind turbine generator system predicted overhaul period avoidance unit unplanned shutdown device according to claim 1, characterized in that: the amplitude vibration measuring point group (1) and the acceleration vibration measuring point group (2) are both positioned in front of the vibration detection acquisition instrument (3).
3. The wind turbine generator system predicted overhaul period avoidance unit unplanned shutdown device according to claim 1, characterized in that: the vibration detection and acquisition instrument (3) is used for detecting the vibration of the wind turbine generator when the wind turbine generator operates, and data are input into the data analysis server (4).
4. The wind turbine generator system predicted overhaul period avoidance unit unplanned shutdown device according to claim 1, characterized in that: the data analysis server (4) is distributed in a cabin control cabinet of the wind turbine generator and used for judging whether the wind turbine generator is in fault and the fault development speed and judging the time for arranging maintenance in advance.
5. The wind turbine generator system predicted overhaul period avoidance unit unplanned shutdown device according to claim 1, characterized in that: the amplitude vibration measuring point group (1), the acceleration vibration measuring point group (2), the vibration detection acquisition instrument (3) and the data analysis server (4) are connected with an alternating current power supply (6) through a communication cable (5).
6. The wind turbine generator system predicted overhaul period avoidance unit unplanned shutdown device according to claim 1, characterized in that: the communication cable (5) is in a soft-wired and hard-wired redundant design, so that the protection is more reliable.
7. A design method of a wind turbine generator prediction overhaul period unit unplanned shutdown avoiding device based on any one of claims 1 to 6 is characterized by comprising the following steps: the design method comprises the following steps:
1) detecting vibration amplitude signals of all main components of the wind turbine generator;
2) detecting that the same type of measuring points in vibration amplitude signals of all main components of the wind turbine generator set are true through a three-to-two judgment signal;
3) detecting vibration acceleration signals of all main components of the wind turbine generator;
4) detecting a signal of 'true' of a similar measuring point in vibration acceleration signals of all main components of the wind turbine generator through a two-out-of-three judgment signal;
5) the amplitude vibration measuring point group (1) and the acceleration vibration measuring point group (2) acquire data through a vibration detection acquisition instrument (3), and the data acquired by the vibration detection acquisition instrument (3) are input into a data analysis server (4);
6) the data analysis server (4) judges the time for the vibration amplitude and the vibration acceleration of each main component of the wind turbine generator to develop to a high value according to the vibration amplitude and the time domain waveform of the vibration acceleration of each main component of the wind turbine generator;
7) and (4) scheduling a maintenance time period by combining the load curve of the wind power plant.
8. The design method of the device for avoiding the unplanned shutdown of the wind turbine generator in the predicted overhaul period according to claim 7, characterized by comprising the following steps: and 6), continuously operating the fixed value which endangers the safety of the wind turbine generator.
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Application publication date: 20200306 |