CN116862476A - Inspection planning method and device for out-of-service relay protection device - Google Patents
Inspection planning method and device for out-of-service relay protection device Download PDFInfo
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Abstract
The invention discloses a method and a device for checking and planning an out-of-service relay protection device, wherein the method comprises the following steps: inputting equipment information of each exceeding-service relay protection device operated in a first area into an evolution model to obtain failure loss data of each exceeding-service relay protection device; the evolution model is obtained by training historical loss data; the historical loss data are calculated according to the historical failure data of each historical out-of-service relay protection device; performing performance test on the out-of-service relay protection devices with the preset number before the rank from large to small in failure loss according to the rank of the failure loss data of each out-of-service relay protection device; the out-of-service relay protection device which does not meet the preset requirements is replaced, so that the out-of-service relay protection device with the performance problems can be screened out accurately, the out-of-service relay protection device is replaced preferentially, and the planning capability of inspection and replacement of the out-of-service relay protection device is improved.
Description
Technical Field
The invention relates to the technical field of power grid safety, in particular to a method and a device for checking and planning an out-of-service relay protection device and a storage medium.
Background
The relay protection devices applied to the power grid have set expected service lives, but in view of the extremely high arrangement quantity of the relay protection devices in the power grid, the partial regional power grid construction time is relatively close to the other reasons, all the relay protection devices which reach the expected service lives cannot be replaced or modified in time, and a large number of relay protection devices in the current power grid are still in an out-of-service state.
The overload protection device which is out of service should also be able to achieve its performance, i.e. be able to recognize the presence and action of a fault in the grid when it causes a corresponding change in the electrical quantity. Most of the existing researches on the over-service relay protection device are carried out in real use, the failure is passively processed and the device is replaced after the failure is detected, the performance of the over-service relay protection device is not comprehensively checked and evaluated, further reasonable checking planning cannot be carried out, and the over-service relay protection device with the performance problem cannot be timely screened out.
Disclosure of Invention
The invention provides a method and a device for checking and planning an out-of-service relay protection device, which are used for calculating failure loss of the out-of-service relay protection device according to equipment information of the out-of-service relay protection device and checking performance of the out-of-service relay protection device so as to realize that the out-of-service relay protection device with performance problems is accurately screened out to be replaced preferentially, and the planning capacity of checking and replacing the out-of-service relay protection device is improved.
The invention provides a method for checking and planning an out-of-service relay protection device, which comprises the following steps: inputting equipment information of each exceeding-service relay protection device operated in a first area into an evolution model to obtain failure loss data of each exceeding-service relay protection device;
the evolution model is obtained by training historical loss data; the historical loss data are calculated according to the historical failure data of each historical out-of-service relay protection device; the historical loss data includes: loss data of the power grid caused by each protection failure event; each of the historical failure data includes: data of protection failure events caused by performance factors of each historical out-of-service relay protection device;
performing performance test on the out-of-service relay protection devices with the preset number before the rank from large to small in failure loss according to the rank of the failure loss data of each out-of-service relay protection device; and replacing the out-of-service relay protection device which does not meet the preset requirements.
As a preferable scheme, the performance inspection method of the over-service relay protection device is used for calculating the protection failure event of each over-service relay protection device caused by performance factors and the loss of the power grid by inputting the equipment information of each over-service relay protection device which is currently operated into the evolution model. According to the ranking of the severity of the loss of each over-service relay protection device to the power grid, performance inspection is carried out on the most serious over-service relay protection devices with the preset quantity, and then the over-service relay protection devices with the performance problems are replaced or modified, so that the risk of unstable operation of the power grid is reduced. According to the invention, the severity of loss caused by the power grid due to the current performance factors of each currently operated out-of-service relay protection device is sequenced, and performance inspection and replacement are performed on the relay protection device with larger influence on the power grid, so that the inspection and replacement planning capacity of the out-of-service relay protection device is improved, and meanwhile, the maintenance efficiency of the power grid is improved.
Further, the evolution model is trained by historical loss data, specifically:
taking performance factors of each historical out-of-service relay protection device as labels of an initial neural network model, inputting historical failure data and historical loss data of each historical out-of-service relay protection device into the initial neural network model for training and testing, and obtaining an evolution model; the performance factors include: one or more of out-of-service time, type of protection, manufacturer, and operating factory.
Further, the equipment information of each over-service relay protection device running in the first area is input into the evolution model, and failure loss data of each over-service relay protection device is obtained, specifically:
according to the label type, acquiring one or more of the out-of-service time, the protection type, the manufacturer and the operation factory of each out-of-service relay protection device in the first area, and inputting the one or more into an evolution model to acquire failure loss data of each out-of-service relay protection device; the failure loss data includes: the value of the economic benefit lost or the severity level of the loss.
Further, according to the ranking of the failure loss data of each of the over-service relay protection devices, performing performance test on the over-service relay protection devices with the preset number before the ranking from the large failure loss to the small failure loss, specifically:
ranking according to the failure loss data from large to small according to the economic benefit value of loss or the loss severity level from large to small, and screening out the first out-of-service relay protection devices with the preset number before ranking;
judging whether the long stopping time of each first out-of-service relay protection device is within a preset time; if yes, checking a preset performance index when the first out-of-service relay protection device is stopped for a long time; if not, generating corresponding performance test time according to the performance factors of the first out-of-service relay protection device.
Further, the replacing the out-of-service relay protection device which does not meet the preset requirement specifically comprises the following steps:
according to the protection type of the overload protection device, checking the corresponding performance index; replacing the out-of-service relay protection device with the non-uniform performance indexes reaching the standard;
wherein the protection type includes: one or more of transformer differential protection, transformer non-electric quantity protection, ultra-high voltage line current differential protection, ultra-high voltage transmission line complete protection and bus protection; the performance index comprises: action setting value, action time and action logic.
Correspondingly, the invention also provides a device for verifying and planning the out-of-service relay protection device, which comprises the following components: a failure loss module and a performance inspection module;
the failure loss module is used for inputting equipment information of each exceeding-period service relay protection device operated in the first area into the evolution model to obtain failure loss data of each exceeding-period service relay protection device; the evolution model is obtained by training historical loss data; the historical loss data are calculated according to the historical failure data of each historical out-of-service relay protection device; the historical loss data includes: loss data of the power grid caused by each protection failure event; each of the historical failure data includes: data of protection failure events caused by performance factors of each historical out-of-service relay protection device;
the performance checking module is used for performing performance checking on the out-of-service relay protection devices with the preset number before the arrangement from large to small in failure loss according to the arrangement of the failure loss data of each out-of-service relay protection device; and replacing the out-of-service relay protection device which does not meet the preset requirements.
As a preferable scheme, the performance inspection device of the over-service relay protection device inputs the equipment information of each currently operated over-service relay protection device into the evolution model through the performance inspection module so as to calculate the protection failure event of each over-service relay protection device caused by the performance factors and the loss of the over-service relay protection device to the power grid. And the performance inspection module performs performance inspection on the most serious pre-set number of out-of-service relay protection devices according to the ranking of the severity of the loss of each out-of-service relay protection device to the power grid, so that the out-of-service relay protection devices with performance problems are replaced or modified, and the risk of unstable operation of the power grid is reduced. According to the invention, the severity of loss caused by the power grid due to the current performance factors of each currently operated out-of-service relay protection device is sequenced, and performance inspection and replacement are performed on the relay protection device with larger influence on the power grid, so that the inspection and replacement planning capacity of the out-of-service relay protection device is improved, and meanwhile, the maintenance efficiency of the power grid is improved.
Further, the failure loss module includes: a training unit and a calculating unit;
the training unit is used for taking performance factors of each historical over-service relay protection device as labels of an initial neural network model, inputting historical failure data and historical loss data of each historical over-service relay protection device into the initial neural network model for training and testing, and obtaining an evolution model; the performance factors include: one or more of out-of-service time, protection type, manufacturer, and run-time plant home;
the computing unit is used for acquiring one or more of the out-of-service time, the protection type, the manufacturer and the operation factory of each out-of-service relay protection device in the first area according to the label type, and inputting the out-of-service time, the protection type, the manufacturer and the operation factory into the evolution model to acquire failure loss data of each out-of-service relay protection device; the failure loss data includes: the value of the economic benefit lost or the severity level of the loss.
Further, the performance inspection module includes: a screening unit and a replacement unit;
the screening unit is used for ranking according to failure loss data and the economic benefit value of loss from large to small or the loss severity level from large to small, and screening out the first out-of-service relay protection devices with the preset number before ranking; judging whether the long stopping time of each first out-of-service relay protection device is within a preset time; if yes, detecting a preset performance index when the first out-of-service relay protection device is stopped for a long time; if not, generating corresponding performance test time according to the performance factors of the first out-of-service relay protection device;
The replacing unit is used for checking corresponding performance indexes according to the protection type of the out-of-service relay protection device; replacing the out-of-service relay protection device with the non-uniform performance indexes reaching the standard;
wherein the protection type includes: one or more of transformer differential protection, transformer non-electric quantity protection, ultra-high voltage line current differential protection, ultra-high voltage transmission line complete protection and bus protection; the performance index comprises: action setting value, action time and action logic.
Accordingly, the present invention also provides a computer-readable storage medium including a stored computer program; the computer program controls equipment where the computer readable storage medium is located to execute the inspection planning method of the out-of-service relay protection device according to the content of the invention when running.
Drawings
FIG. 1 is a schematic flow chart of an embodiment of a method for testing and planning an out-of-service relay protection device provided by the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of an inspection planning apparatus for an out-of-service relay protection apparatus provided by the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1, a method for testing and planning an out-of-service relay protection device according to an embodiment of the present invention includes steps S101-S102:
step S101: inputting equipment information of each exceeding-service relay protection device operated in a first area into an evolution model to obtain failure loss data of each exceeding-service relay protection device;
the evolution model is obtained by training historical loss data; the historical loss data are calculated according to the historical failure data of each historical out-of-service relay protection device; the historical loss data includes: loss data of the power grid caused by each protection failure event; each of the historical failure data includes: data of protection failure events caused by performance factors of each historical out-of-service relay protection device;
Further, the evolution model is trained by historical loss data, specifically:
taking performance factors of each historical out-of-service relay protection device as labels of an initial neural network model, inputting historical failure data and historical loss data of each historical out-of-service relay protection device into the initial neural network model for training and testing, and obtaining an evolution model; the performance factors include: one or more of out-of-service time, type of protection, manufacturer, and operating factory.
In this embodiment, each time the power equipment fails or fails to implement its function, a detailed record is provided in the power grid, so that historical data of a protection failure event caused by the failure of the historical out-of-service relay protection device to implement its own performance is collected as data for training the initial neural network model.
The method comprises the steps of collecting information related to the over-service relay protection device in the selection of historical data, and eliminating information of failure of the over-service relay protection device caused by non-performance reasons, so that information of failure of the over-service relay protection device only caused by the performance reasons of the over-service relay protection device is obtained. The information comprises the out-of-service time, the protection type, the manufacturer, the device model, the operation manufacturer, the failure influence and the like. The protection type comprises transformer differential protection, transformer non-electric quantity protection, ultra-high voltage line current differential protection, ultra-high voltage transmission line complete protection and bus protection. The failure effect, i.e. failure loss, refers to the loss of a specific device to the power grid, and can be represented by estimated economic benefit or severity level.
In this embodiment, the out-of-service time, the protection type, the manufacturer, the operation manufacturer and the failure influence are used as labels, the history failure data and the history loss data of each history out-of-service relay protection device are input into the initial neural network model, and training and testing are performed on the initial neural network model to obtain the evolution model with certain accuracy. The evolution model is used for calculating possible failure influences according to the input out-of-service time, protection type, manufacturer and operation manufacturer.
The longer the out-of-service time is, the higher the risk of potential performance failure is, the greater the degree of performance failure is, and further the failure influence is greater.
The protection types are different, and the consequences caused by failure are different, so that the influence of the failure is different.
The implicit quality levels of devices produced by different manufacturers may vary and thus vary in the impact of failure.
Some relay protection devices use environments with larger differences from the general environments, such as high pressure, high temperature, high humidity and the like, and the environments can have adverse effects on the normal performance of the relay protection devices. Thus, the operating manufacturer may also play a different role in the failure impact.
Further, the equipment information of each over-service relay protection device running in the first area is input into the evolution model, and failure loss data of each over-service relay protection device is obtained, specifically:
according to the label type, acquiring one or more of the out-of-service time, the protection type, the manufacturer and the operation factory of each out-of-service relay protection device in the first area, and inputting the one or more into an evolution model to acquire failure loss data of each out-of-service relay protection device; the failure loss data includes: the value of the economic benefit lost or the severity level of the loss.
In this embodiment, the information of all the over-service relay protection devices in the jurisdiction of the southern power grid is counted, and specifically includes information about 4 aspects of the over-service time, the protection type, the manufacturer and the operation manufacturer of each over-service relay protection device. Information of other aspects related to the device is collected after the device which should preferentially detect the performance is obtained later, and information collection, operation and storage burden can be reduced.
Step S102: performing performance test on the out-of-service relay protection devices with the preset number before the rank from large to small in failure loss according to the rank of the failure loss data of each out-of-service relay protection device; and replacing the out-of-service relay protection device which does not meet the preset requirements.
Further, according to the ranking of the failure loss data of each of the over-service relay protection devices, performing performance test on the over-service relay protection devices with the preset number before the ranking from the large failure loss to the small failure loss, specifically:
ranking according to the failure loss data from large to small according to the economic benefit value of loss or the loss severity level from large to small, and screening out the first out-of-service relay protection devices with the preset number before ranking;
judging whether the long stopping time of each first out-of-service relay protection device is within a preset time; if yes, checking a preset performance index when the first out-of-service relay protection device is stopped for a long time; if not, generating corresponding performance test time according to the performance factors of the first out-of-service relay protection device.
In this embodiment, for safety and detection accuracy, detection of electrical devices including relay protection devices needs to be performed off-line, and it takes much time to perform performance detection. Thus, a long stop schedule associated with each device, i.e., the time each device is long stopped, is considered. Wherein the device is in a long stop off-grid state.
For example, if the long stop schedule associated with the relay protection apparatus is relatively close, within a preset time frame, performance detection is scheduled for the apparatus when it is stopped for a long time. If the related long stop planning time is far, the time of performance inspection is planned by combining failure influence degree, expert judgment, repairable long stop planning time and the like. The method and the device realize planning of performance inspection time of the relay protection device and orderly performance inspection of the relay protection device with serious loss of the power grid.
Further, the replacing the out-of-service relay protection device which does not meet the preset requirement specifically comprises the following steps:
according to the protection type of the overload protection device, checking the corresponding performance index; replacing the out-of-service relay protection device with the non-uniform performance indexes reaching the standard;
wherein the protection type includes: one or more of transformer differential protection, transformer non-electric quantity protection, ultra-high voltage line current differential protection, ultra-high voltage transmission line complete protection and bus protection; the performance index comprises: action setting value, action time and action logic.
In the present embodiment, the performance index includes, illustratively: current setting value error: no more than + -5% or + -0.02 In (rated current); voltage setting value error: no more than + -5% or + -0.01 Un (rated voltage); impedance protection constant value error: no more than + -5% or + -0.1Ω; direction error: not more than + -3 DEG; delay time error: not more than + -1% or + -40 ms. The above performance index is only one example, and in actual cases, the determination is performed for each specific protection type.
In this embodiment, the protection type of the extra-high voltage line current differential protection is exemplified:
1. steady-state differential i-stage (self-loop half) current setting error. 3 current setting values 1/2/3In are set. For the setting value of 1, 0.525 and 0.475 (5% value of half the setting value) were applied, respectively, and whether the a-C three phases were reliably operated at 0.525 or not was examined, and if so, the description was that there was no problem. Similarly, similar tests were performed for two current settings of 2 and 3, respectively. And if the value is equal to or greater than 1.05 times the half of the setting value, the operation is reliable, and if the value is equal to or less than 0.95 times the half of the setting value, the operation is reliable, and the operation is not reliable, thus indicating that the operation is normal.
Numerical value setting:
checking results: and (5) qualified.
2. Steady-state differential ii-stage (self-loop half) current setting errors. The same as above.
Numerical value setting:
checking results: and (5) qualified.
3. Zero sequence overcurrent acceleration protects the setting value error of the current.
3 current setting values of 0.2/1/2 are set. For the setting value of 0.2, 0.21 and 0.19 (5% of the setting value) were applied, respectively, and whether the a-C three phases were reliably operated at 0.21 and not operated at 0.19 was examined, and if so, no problem was found. The other two are similar. High and low, and no.
Numerical value setting:
checking results: and (5) qualified.
4. And (5) an overcurrent setting value error when the TV is disconnected. Setting values of 0.5A, 1A and 2A. The rest is the same as above.
Numerical value setting:
checking results: and (5) qualified.
5. The voltage setting value error (not more than + -5% or + -0.01 Un (determined according to the type of protection by special requirements)) of the line non-voltage bus voltage (bus voltage application value 42V) is detected. A line no-voltage setting value of 30V is set. 28.5V and 31.5V (5%) were applied respectively, and it was examined whether the A-C three phases were reliably operated at 28.5 and reliably not operated at 31.5, and if so, no problem was noted.
Numerical value setting:
checking results: and (5) qualified.
6. And detecting a voltage setting value error of the line voltage bus without voltage (line voltage application value 42V). And setting a bus non-voltage setting value of 30V. The remainder was the same as above.
Numerical value setting:
checking results: and (5) qualified.
7. And detecting a voltage-free setting value error of the line voltage-free bus. An pressureless setting value of 30V was set. The remainder was the same as above.
Numerical value setting:
checking results: and (5) qualified.
8. The ground distances I, II, III are set to be different from each other by a value of + -5% or + -0.1Ω (determined by the type of protection). 3 impedance setting values of 0.5/1/2 are set. For the setting value of 0.5, 0.525 and 0.475 (5% value of setting value) were applied respectively, and whether the a-C three phases were reliably operated at 0.475 and not operated at 0.525 was examined, and if so, no problem was found. The other two are similar. The low time is operated, and the high time is not operated.
Numerical value setting:
checking results: and (5) qualified.
9. Phase-to-phase distances I, II and III are used for protecting constant value errors. The same as above.
Numerical value type constant value
Checking results: and (5) qualified.
10. Zero sequence overcurrent I, II, III and IV sections impedance protection constant value errors. 3 impedance setting values of 0.5/1/2 are set. For the setting value of 0.5, 0.525 and 0.475 (5% value of setting value) were applied respectively, and whether the a-C three phases were reliably operated at 0.525 and not operated at 0.475 was examined, and if so, no problem was found. The other two are similar. High and low, and no.
Numerical value setting:
checking results: and (5) qualified.
11. Steady state differential phase i (self-loop half) delay time error. Setting the setting value to be 0s, detecting the actual action time, and indicating that the error is normal within 40 ms.
Time-based fixed value:
| project | Time limit | Setting value(s) | Time of action (ms) | Error of |
| Steady state differential I section | \ | 0 | 24 | 24ms |
Checking results: and (5) qualified.
12. Steady state differential phase ii (self-loop half) delay time error. Setting the setting value to 40s, detecting the actual action time, and indicating that the error is normal within 40 ms.
Time-based fixed value:
| project | Time limit | Setting value (ms) | Time of action (ms) | Error of |
| Steady state differential II section | \ | 40 | 58.9 | 18.9ms |
Checking results: and (5) qualified.
13. The grounding distance I section delay time error (the action time is not more than 30ms under the condition of 0.7 times of impedance setting value when the distance I section time setting value is set to 0, and the delay time error of other sections is +/-1% or +/-40 ms). Setting the setting value to 0s, detecting the actual action time, and indicating that the error is normal within 30 ms.
| Project | Time limit | Setting value (ms) | Time of action (ms) | Error of |
| Grounding distance I section | \ | 0 | 29.7 | 29.7ms |
Checking results: and (5) qualified.
14. Phase-to-phase distance I section delay time error. The same as above.
| Project | Time limit | Setting value (ms) | Time of action (ms) | Error of |
| Distance I section | \ | 0 | 33.3 | 33.3ms |
Checking results: and (5) failing to pass.
15. Zero sequence overcurrent I section delay time error. The same as above.
Time-based fixed value:
| project | Time limit | Setting value(s) | Action time(s) | Error of |
| Zero sequence overcurrent I section | \ | 0 | 0.029 | 29ms |
Checking results: and (5) qualified.
16. And the delay time errors of the grounding distances II and III. Three setting values of 0.1s, 1s and 5s/10s are set respectively. The actual operation time at each setting value was measured, and the error was found to be normal within 40 ms.
Time-based fixed value:
checking results: and (5) qualified.
17. Phase-to-phase distances II and III are delayed by time errors. Three setting values of 0.1s, 1s and 5s are set respectively. The actual operation time at each setting value was measured, and the error was found to be normal within 40 ms.
Time-based fixed value:
checking results: and (5) qualified.
18. Zero sequence overcurrent II-stage delay time error. The same as above (three settings of 0.1s, 1s and 5 s).
Time-based fixed value:
checking results: and (5) qualified.
19. And (5) overcurrent delay time error when the TV is disconnected. The same as above (three settings of 0.1s, 1s and 5 s).
Time-based fixed value:
checking results: and (5) qualified.
20. Zero sequence overcurrent III and IV delay time errors. Three setting values of 0.1s/0.5s, 1s and 5s are set respectively. The actual operation time at each setting value was measured, and the error was found to be normal within 40 ms.
Time-based fixed value:
checking results: and (5) qualified.
21. Zero sequence overcurrent accelerates the protection delay time error. Setting two setting values of 60ms and 100s respectively. The actual operation time at each setting value was measured, and the error was found to be normal within 40 ms.
Time-based fixed value:
checking results: and (5) qualified.
22. Single phase reclosing delay time error. Three setting values of 0.8s, 1s and 2s are set respectively. The actual operation time at each setting value was measured, and the error was found to be normal within 40 ms.
Time-based fixed value:
/>
checking results: and (5) qualified.
23. And three-phase reclosing delay time errors. Setting three setting values of 1s, 2s and 3s respectively. The actual operation time at each setting value was measured, and the error was found to be normal within 40 ms.
Time-based fixed value:
checking results: and (5) qualified.
24. Zero sequence overcurrent direction (direction error: not more than + -3 DEG (determined by special requirements according to protection type)).
The boundary angles of 12 degrees and 192 degrees are respectively set, the actual values are respectively measured, and the fact that the boundary angles are not larger than +/-3 degrees is normal.
Checking results: and (5) qualified.
25. And detecting the synchronous angle of the synchronous mode. The setting value is 30 °. The boundary angles are respectively set to be 30 degrees and-30 degrees, the actual values are respectively measured, and the situation that the boundary angles are not larger than +/-3 degrees is normal. The reclosing device is used for reclosing, and can be operated by less than 30 degrees.
Numerical value setting:
checking results: and (5) qualified.
The implementation of the embodiment of the invention has the following effects:
according to the performance inspection method for the out-of-service relay protection device, equipment information of each out-of-service relay protection device in current operation is input into the evolution model, so that protection failure events of each out-of-service relay protection device caused by performance factors and loss of the power grid are calculated. According to the ranking of the severity of the loss of each over-service relay protection device to the power grid, performance inspection is carried out on the most serious over-service relay protection devices with the preset quantity, and then the over-service relay protection devices with the performance problems are replaced or modified, so that the risk of unstable operation of the power grid is reduced. According to the invention, the severity of loss caused by the power grid due to the current performance factors of each currently operated out-of-service relay protection device is sequenced, and performance inspection and replacement are performed on the relay protection device with larger influence on the power grid, so that the inspection and replacement planning capacity of the out-of-service relay protection device is improved, and meanwhile, the maintenance efficiency of the power grid is improved.
Example two
Referring to fig. 2, an inspection planning apparatus for an out-of-service relay protection device according to an embodiment of the present invention includes: a failure loss module 201 and a performance verification module 202;
the failure loss module 201 is configured to input device information of each over-service relay protection device running in the first area into the evolution model, and obtain failure loss data of each over-service relay protection device; the evolution model is obtained by training historical loss data; the historical loss data are calculated according to the historical failure data of each historical out-of-service relay protection device; the historical loss data includes: loss data of the power grid caused by each protection failure event; each of the historical failure data includes: data of protection failure events caused by performance factors of each historical out-of-service relay protection device;
the performance checking module 202 is configured to perform performance checking on the out-of-service relay protection devices with a preset number of out-of-service relay protection devices before the out-of-service relay protection devices are ranked from large to small according to the ranking of the failure loss data of each out-of-service relay protection device; and replacing the out-of-service relay protection device which does not meet the preset requirements.
Further, the failure loss module includes: a training unit and a calculating unit;
the training unit is used for taking performance factors of each historical over-service relay protection device as labels of an initial neural network model, inputting historical failure data and historical loss data of each historical over-service relay protection device into the initial neural network model for training and testing, and obtaining an evolution model; the performance factors include: one or more of out-of-service time, protection type, manufacturer, and run-time plant home;
the computing unit is used for acquiring one or more of the out-of-service time, the protection type, the manufacturer and the operation factory of each out-of-service relay protection device in the first area according to the label type, and inputting the out-of-service time, the protection type, the manufacturer and the operation factory into the evolution model to acquire failure loss data of each out-of-service relay protection device; the failure loss data includes: the value of the economic benefit lost or the severity level of the loss.
Further, the performance inspection module includes: a screening unit and a replacement unit;
the screening unit is used for ranking according to failure loss data and the economic benefit value of loss from large to small or the loss severity level from large to small, and screening out the first out-of-service relay protection devices with the preset number before ranking; judging whether the long stopping time of each first out-of-service relay protection device is within a preset time; if yes, detecting a preset performance index when the first out-of-service relay protection device is stopped for a long time; if not, generating corresponding performance test time according to the performance factors of the first out-of-service relay protection device;
The replacing unit is used for checking corresponding performance indexes according to the protection type of the out-of-service relay protection device; replacing the out-of-service relay protection device with the non-uniform performance indexes reaching the standard;
wherein the protection type includes: one or more of transformer differential protection, transformer non-electric quantity protection, ultra-high voltage line current differential protection, ultra-high voltage transmission line complete protection and bus protection; the performance index comprises: action setting value, action time and action logic.
The inspection planning device of the out-of-service relay protection device can implement the inspection planning method of the out-of-service relay protection device in the method embodiment. The options in the method embodiments described above are also applicable to this embodiment and will not be described in detail here. The rest of the embodiments of the present application may refer to the content of the above method embodiments, and in this embodiment, no further description is given.
The implementation of the embodiment of the application has the following effects:
the performance inspection device for the over-service relay protection device inputs the equipment information of each currently operated over-service relay protection device into the evolution model through the performance inspection module so as to calculate the protection failure event of each over-service relay protection device caused by the performance factors and the loss of the power grid. And the performance inspection module performs performance inspection on the most serious pre-set number of out-of-service relay protection devices according to the ranking of the severity of the loss of each out-of-service relay protection device to the power grid, so that the out-of-service relay protection devices with performance problems are replaced or modified, and the risk of unstable operation of the power grid is reduced. According to the application, the severity of loss caused by the power grid due to the current performance factors of each currently operated out-of-service relay protection device is sequenced, and performance inspection and replacement are performed on the relay protection device with larger influence on the power grid, so that the inspection and replacement planning capacity of the out-of-service relay protection device is improved, and meanwhile, the maintenance efficiency of the power grid is improved.
Example III
Correspondingly, the invention further provides a computer readable storage medium, which comprises a stored computer program, wherein when the computer program runs, equipment where the computer readable storage medium is located is controlled to execute the inspection planning method of the out-of-service relay protection device according to any one of the embodiments.
The computer program may be divided into one or more modules/units, which are stored in the memory and executed by the processor to accomplish the present invention, for example. The one or more modules/units may be a series of computer program instruction segments capable of performing the specified functions, which instruction segments are used for describing the execution of the computer program in the terminal device.
The terminal equipment can be computing equipment such as a desktop computer, a notebook computer, a palm computer, a cloud server and the like. The terminal device may include, but is not limited to, a processor, a memory.
The processor may be a central processing unit (Central Processing Unit, CPU), other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like, which is a control center of the terminal device, and which connects various parts of the entire terminal device using various interfaces and lines.
The memory may be used to store the computer program and/or the module, and the processor may implement various functions of the terminal device by running or executing the computer program and/or the module stored in the memory and invoking data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function, and the like; the storage data area may store data created according to the use of the mobile terminal, etc. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as a hard disk, memory, plug-in hard disk, smart Media Card (SMC), secure Digital (SD) Card, flash Card (Flash Card), at least one disk storage device, flash memory device, or other volatile solid-state storage device.
Wherein the terminal device integrated modules/units may be stored in a computer readable storage medium if implemented in the form of software functional units and sold or used as stand alone products. Based on such understanding, the present invention may implement all or part of the flow of the method of the above embodiment, or may be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of each of the method embodiments described above. Wherein the computer program comprises computer program code which may be in source code form, object code form, executable file or some intermediate form etc. The computer readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth.
The foregoing embodiments have been provided for the purpose of illustrating the general principles of the present invention, and are not to be construed as limiting the scope of the invention. It should be noted that any modifications, equivalent substitutions, improvements, etc. made by those skilled in the art without departing from the spirit and principles of the present invention are intended to be included in the scope of the present invention.
Claims (9)
1. The method for checking and planning the overload protection device is characterized by comprising the following steps of:
inputting equipment information of each exceeding-service relay protection device operated in a first area into an evolution model to obtain failure loss data of each exceeding-service relay protection device;
the evolution model is obtained by training historical loss data; the historical loss data are calculated according to the historical failure data of each historical out-of-service relay protection device; the historical loss data includes: loss data of the power grid caused by each protection failure event; each of the historical failure data includes: data of protection failure events caused by performance factors of each historical out-of-service relay protection device;
Performing performance test on the out-of-service relay protection devices with the preset number before the rank from large to small in failure loss according to the rank of the failure loss data of each out-of-service relay protection device; and replacing the out-of-service relay protection device which does not meet the preset requirements.
2. The method for testing and planning an out-of-service relay protection device according to claim 1, wherein the evolution model is obtained by training historical loss data, specifically:
taking performance factors of each historical out-of-service relay protection device as labels of an initial neural network model, inputting historical failure data and historical loss data of each historical out-of-service relay protection device into the initial neural network model for training and testing, and obtaining an evolution model; the performance factors include: one or more of out-of-service time, type of protection, manufacturer, and operating factory.
3. The method for verifying and planning an over-service relay protection device according to claim 2, wherein the step of inputting the equipment information of each over-service relay protection device operating in the first area into the evolution model to obtain failure loss data of each over-service relay protection device comprises the following steps:
According to the label type, acquiring one or more of the out-of-service time, the protection type, the manufacturer and the operation factory of each out-of-service relay protection device in the first area, and inputting the one or more into an evolution model to acquire failure loss data of each out-of-service relay protection device; the failure loss data includes: the value of the economic benefit lost or the severity level of the loss.
4. The method for testing and planning the over-service relay protection device according to claim 3, wherein the performance of the over-service relay protection device with a preset number of pre-ranked over-service relay protection devices with high failure loss is tested according to the rank of the failure loss data of each over-service relay protection device, specifically:
ranking according to the failure loss data from large to small according to the economic benefit value of loss or the loss severity level from large to small, and screening out the first out-of-service relay protection devices with the preset number before ranking;
judging whether the long stopping time of each first out-of-service relay protection device is within a preset time; if yes, checking a preset performance index when the first out-of-service relay protection device is stopped for a long time; if not, generating corresponding performance test time according to the performance factors of the first out-of-service relay protection device.
5. The method for testing and planning the over-service relay protection device according to claim 4, wherein the replacing the over-service relay protection device which does not meet the preset requirement specifically comprises:
according to the protection type of the overload protection device, checking the corresponding performance index; replacing the out-of-service relay protection device with the non-uniform performance indexes reaching the standard;
wherein the protection type includes: one or more of transformer differential protection, transformer non-electric quantity protection, ultra-high voltage line current differential protection, ultra-high voltage transmission line complete protection and bus protection; the performance index comprises: action setting value, action time and action logic.
6. The utility model provides a device is planned in inspection of overload protection device of taking service for a long time which characterized in that includes: a failure loss module and a performance inspection module;
the failure loss module is used for inputting equipment information of each exceeding-period service relay protection device operated in the first area into the evolution model to obtain failure loss data of each exceeding-period service relay protection device; the evolution model is obtained by training historical loss data; the historical loss data are calculated according to the historical failure data of each historical out-of-service relay protection device; the historical loss data includes: loss data of the power grid caused by each protection failure event; each of the historical failure data includes: data of protection failure events caused by performance factors of each historical out-of-service relay protection device;
The performance checking module is used for performing performance checking on the out-of-service relay protection devices with the preset number before the arrangement from large to small in failure loss according to the arrangement of the failure loss data of each out-of-service relay protection device; and replacing the out-of-service relay protection device which does not meet the preset requirements.
7. The apparatus for testing and planning an out-of-service relay protection device of claim 6, wherein the failure loss module comprises: a training unit and a calculating unit;
the training unit is used for taking performance factors of each historical over-service relay protection device as labels of an initial neural network model, inputting historical failure data and historical loss data of each historical over-service relay protection device into the initial neural network model for training and testing, and obtaining an evolution model; the performance factors include: one or more of out-of-service time, protection type, manufacturer, and run-time plant home;
the computing unit is used for acquiring one or more of the out-of-service time, the protection type, the manufacturer and the operation factory of each out-of-service relay protection device in the first area according to the label type, and inputting the out-of-service time, the protection type, the manufacturer and the operation factory into the evolution model to acquire failure loss data of each out-of-service relay protection device; the failure loss data includes: the value of the economic benefit lost or the severity level of the loss.
8. The apparatus for testing and planning an out-of-service relay protection device of claim 6, wherein the performance testing module comprises: a screening unit and a replacement unit;
the screening unit is used for ranking according to failure loss data and the economic benefit value of loss from large to small or the loss severity level from large to small, and screening out the first out-of-service relay protection devices with the preset number before ranking; judging whether the long stopping time of each first out-of-service relay protection device is within a preset time; if yes, detecting a preset performance index when the first out-of-service relay protection device is stopped for a long time; if not, generating corresponding performance test time according to the performance factors of the first out-of-service relay protection device;
the replacing unit is used for checking corresponding performance indexes according to the protection type of the out-of-service relay protection device; replacing the out-of-service relay protection device with the non-uniform performance indexes reaching the standard;
wherein the protection type includes: one or more of transformer differential protection, transformer non-electric quantity protection, ultra-high voltage line current differential protection, ultra-high voltage transmission line complete protection and bus protection; the performance index comprises: action setting value, action time and action logic.
9. A computer readable storage medium, wherein the computer readable storage medium comprises a stored computer program; wherein the computer program, when running, controls the device in which the computer readable storage medium is located to execute a method for verifying and planning an out-of-service relay protection device according to any one of claims 1 to 5.
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| CN202310855458.4A CN116862476A (en) | 2023-07-12 | 2023-07-12 | Inspection planning method and device for out-of-service relay protection device |
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| CN202310855458.4A CN116862476A (en) | 2023-07-12 | 2023-07-12 | Inspection planning method and device for out-of-service relay protection device |
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