A method and system for monitoring the status of substation equipment

Abstract

The present invention discloses a method and system for monitoring the status of substation equipment, which relates to the technical field of substation equipment status monitoring. The patrol data of multiple substation equipment on the outgoing line interval is obtained, and the operation status of each patrol data is evaluated to obtain the interval status and the status change value of the outgoing line interval. It is judged whether the interval status is a preset abnormal conversion status. If the interval status is an abnormal conversion status, fault analysis is performed on the status change value, the equipment type of each substation equipment, and the patrol data to obtain the status monitoring results corresponding to each substation equipment. If the interval status is not an abnormal conversion status, it is determined that the equipment is operating normally for the status monitoring results corresponding to each substation equipment. The technical problem that the prior art mainly confirms the status of substation equipment before and after operation by patrol personnel arriving at the scene, but this method has poor real-time performance, is difficult to meet the high-efficiency requirements of sequence control operation, and reduces the reliability of substation operation is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of substation equipment status monitoring, and particularly to a method and system for monitoring the status of substation equipment. Background Art

[0002] With the continuous expansion of the scale of the power system and the improvement of the intelligent demand, the operation mode of substations has gradually changed from traditional manual operation to programmed and automated operation. As an efficient automated operation method, sequence control operation (sequential control operation) automatically completes the sequential control of equipment such as switches and disconnectors through preset operation logics, significantly improving the operation efficiency and reducing the risk of human misoperation. However, the reliability and safety of sequence control operation highly depend on the accurate judgment of the status of substation equipment. In particular, it is necessary to perform secondary verification on the status of substation equipment before and after operation to ensure the correctness of the operation result and the stability of equipment operation. Therefore, there is an urgent need for a method for monitoring the status of substation equipment.

[0003] Currently, the prior art mainly relies on inspection personnel to arrive at the site to confirm the status of substation equipment before and after operation. However, the manual verification method has poor real-time performance, is difficult to meet the high-efficiency requirements of sequence control operation, and reduces the reliability of substation operation. Summary of the Invention

[0004] The present invention provides a method and system for monitoring the status of substation equipment, which solves the technical problem that the prior art mainly relies on inspection personnel to arrive at the site to confirm the status of substation equipment before and after operation, but the manual verification method has poor real-time performance, is difficult to meet the high-efficiency requirements of sequence control operation, and reduces the reliability of substation operation.

[0005] A method for monitoring the status of substation equipment provided by the first aspect of the present invention includes:

[0006] Obtain the inspection data of multiple substation equipment on the outgoing line interval, and perform an operation status evaluation on each of the inspection data to obtain the interval status and the status change value of the outgoing line interval;

[0007] Judge whether the interval status is a preset abnormal conversion status;

[0008] If the interval status is the abnormal conversion status, perform a fault analysis on the status change value, the equipment type of each substation equipment, and the inspection data to obtain the status monitoring result corresponding to each substation equipment;

[0009] If the interval status is not the abnormal conversion status, determine that the status monitoring result corresponding to each substation equipment is normal operation of the equipment.

[0010] Optionally, the inspection data includes first device data and second device data. The step of performing an operation status evaluation on each piece of the inspection data to obtain the interval status and the status change value of the outgoing line interval includes:

[0011] Input each piece of the first device data and each piece of the second device data into a preset device status function respectively to obtain the initial device status value and the target device status value corresponding to the outgoing line interval;

[0012] Calculate a first difference between the initial device status value and the target device status value, and take the absolute value of the first difference as the status change value;

[0013] Generate a corresponding target key by using the initial device status value and the target device status value;

[0014] Retrieve a preset list of interval status key-value pairs by using the target key to match the interval status corresponding to the outgoing line interval.

[0015] Optionally, the step of performing a fault analysis on the status change value, the device type of each substation device, and the inspection data to obtain the status monitoring result corresponding to each substation device includes:

[0016] Judge whether the status change value is greater than a preset error threshold;

[0017] If the status change value is less than or equal to the error threshold, determine that the status monitoring result corresponding to each substation device is normal device operation;

[0018] If the status change value is greater than the error threshold, determine the status monitoring result corresponding to each substation device respectively according to the device type and the inspection data of each substation device.

[0019] Optionally, the inspection data includes the length of the conductive rod, the effective distance value, the outdoor temperature, the equipment temperature increment, the equipment surface area, and the equipment rust area. The step of determining the status monitoring result corresponding to each substation device respectively according to the device type and the inspection data of each substation device includes:

[0020] Judge whether the device type of each substation device is a switch respectively;

[0021] If the device type is a switch, use a preset initial offset as the target offset of the substation device;

[0022] If the device type is not a switch, perform a difference process on the length of the conductive rod of the substation device and the effective distance value to obtain a second difference;

[0023] Process the ratio of the second difference to the length of the conductive rod to obtain the target offset;

[0024] Respectively process the ratio of the rust area corresponding to each substation device to the surface area of the device to obtain the surface rust amount corresponding to each substation device;

[0025] Respectively evaluate the heat generation of the outdoor temperature and the device temperature increment corresponding to each substation device to obtain the device heat generation corresponding to each substation device;

[0026] Respectively evaluate the device status of the target offset, the surface rust amount of the device, and the device heat generation corresponding to each substation device to obtain the status monitoring result corresponding to each substation device.

[0027] Optionally, the step of respectively evaluating the heat generation of the outdoor temperature and the device temperature increment corresponding to each substation device to obtain the device heat generation corresponding to each substation device includes:

[0028] Respectively sum up the outdoor temperature and the device temperature increment corresponding to each substation device to obtain a plurality of first sums;

[0029] Respectively process the ratio of the preset device heat generation warning threshold to each of the first sums to obtain a plurality of first ratios;

[0030] Respectively process the difference between the preset heat generation coefficient and each of the first ratios to obtain the device heat generation corresponding to each substation device.

[0031] Optionally, the step of respectively evaluating the device status of the target offset, the surface rust amount of the device, and the device heat generation corresponding to each substation device to obtain the status monitoring result corresponding to each substation device includes:

[0032] Respectively perform weighted calculation on the target offset, the surface rust amount of the device, and the device heat generation corresponding to each substation device according to the preset device fault weight to obtain the device fault degree corresponding to each substation device;

[0033] Judge whether each device fault degree is greater than the preset first fault threshold;

[0034] If the device fault degree is less than or equal to the first fault threshold, use the preset first warning value as the status monitoring result of the substation device associated with the device fault degree;

[0035] If the device fault degree is greater than the first fault threshold, judge whether the device fault degree is greater than the preset second fault threshold;

[0036] If the device failure degree is less than or equal to the second failure threshold, then use the preset second warning value as the status monitoring result of the substation equipment associated with the device failure degree;

[0037] If the device failure degree is greater than the second failure threshold, then determine whether the device failure degree is greater than a preset third failure threshold;

[0038] If the device failure degree is less than or equal to the third failure threshold, then use the preset third warning value as the status monitoring result of the substation equipment associated with the device failure degree;

[0039] If the device failure degree is greater than the third failure threshold, then use the preset fourth warning value as the status monitoring result of the substation equipment associated with the device failure degree.

[0040] Optionally, the abnormal conversion state includes the state of changing from maintenance to cold standby, the state of changing from maintenance to hot standby, the state of changing from cold standby to maintenance, the state of changing from cold standby to hot standby, the state of changing from hot standby to maintenance, the state of changing from hot standby to cold standby, and the equipment not being operated.

[0041] A status monitoring system for substation equipment provided in the second aspect of the present invention includes:

[0042] An acquisition module, configured to obtain the inspection data of multiple substation equipment on the outgoing line interval, and evaluate the operation status of each of the inspection data to obtain the interval status and the status change value of the outgoing line interval;

[0043] An analysis module, configured to determine whether the interval status is a preset abnormal conversion state;

[0044] A first monitoring module, configured to perform a fault analysis on the status change value, the equipment type of each substation equipment, and the inspection data when the interval status is the abnormal conversion state, to obtain the status monitoring result corresponding to each substation equipment;

[0045] A second monitoring module, configured to determine that the status monitoring result corresponding to each substation equipment is normal operation of the equipment when the interval status is not the abnormal conversion state.

[0046] An electronic device provided in the third aspect of the present invention includes a memory and a processor. When the computer program stored in the memory is executed by the processor, the processor executes the steps of the status monitoring method for substation equipment as described in any one of the above.

[0047] A computer-readable storage medium provided by the fourth aspect of the present invention stores a computer program, and when the computer program is executed, it implements the method for monitoring the state of substation equipment as described in any one of the above.

[0048] As can be seen from the above technical solutions, the present invention has the following advantages:

[0049] Obtain the inspection data of multiple substation equipment in the outgoing line interval, evaluate the operation status of each inspection data, obtain the interval status and the status change value of the outgoing line interval, and then determine the status monitoring results of each substation equipment according to the interval status, the status change value and each inspection data. It overcomes the technical problem that the prior art mainly relies on inspection personnel to arrive at the site to confirm the status of substation equipment before and after operation, but the manual verification method has poor real-time performance, is difficult to meet the high-efficiency requirements of sequence control operation, and reduces the reliability of substation operation. Compared with the traditional substation equipment monitoring method, the present invention evaluates the operation status of multiple inspection data to obtain the interval status and the status change value of the outgoing line interval. When the interval status is not an abnormal conversion state, it directly marks that the substation equipment is operating normally, shortens the processing time of the non-abnormal scenario, and improves the reliability of substation operation. Description of the Drawings

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0051] Figure 1 It is a step flow chart of a method for monitoring the state of substation equipment provided in Embodiment 1 of the present invention;

[0052] Figure 2 It is a structural schematic diagram of the outgoing line interval provided in Embodiment 1 of the present invention;

[0053] Figure 3 It is a step flow chart of a method for monitoring the state of substation equipment provided in Embodiment 2 of the present invention;

[0054] Figure 4 It is a substation equipment state change diagram provided in Embodiment 2 of the present invention;

[0055] Figure 5 It is a structural block diagram of a substation equipment state monitoring system provided in Embodiment 3 of the present invention;

[0056] Figure 6 It is a structural block diagram of an electronic device provided in Embodiment 4 of the present invention. Specific embodiments

[0057] An embodiment of the present invention provides a method and system for monitoring the status of substation equipment, which is used to solve the technical problem that in the prior art, the status of substation equipment before and after operation is mainly confirmed by inspection personnel arriving at the site, but the manual verification method has poor real-time performance, is difficult to meet the high-efficiency requirements of sequence control operation, and reduces the reliability of substation operation.

[0058] In order to make the object, features, and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments described below are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention.

[0059] Please refer to Figure 1 , Figure 1 which is a flowchart of the steps of a method for monitoring the status of substation equipment provided in Embodiment 1 of the present invention.

[0060] A method for monitoring the status of substation equipment provided by the present invention includes:

[0061] Step 101: Obtain the inspection data of multiple substation equipment on the outgoing line interval, and evaluate the operation status of each inspection data to obtain the interval status and status change value of the outgoing line interval.

[0062] The inspection data refers to the equipment operation data before and after the sequence control operation of the substation equipment. Among them, the equipment operation data includes the switch color coefficient, outdoor wind speed, equipment temperature measurement value, length of the conductive rod, effective distance value, outdoor temperature, equipment temperature increment, equipment surface area, and equipment rust area.

[0063] The interval status refers to the change in the electrical equipment status of the outgoing line interval during sequence control in the substation. Among them, the change in the electrical equipment status includes the state change from running to hot standby, from running to cold standby, from running to maintenance, from hot standby to running, from hot standby to cold standby, from hot standby to maintenance, from cold standby to running, from cold standby to hot standby, from cold standby to maintenance, from maintenance to running, from maintenance to hot standby, from maintenance to cold standby, and the equipment has not been operated.

[0064] In the embodiment of the present invention, the inspection data of multiple substation equipment on the outgoing line interval is obtained by using a drone to patrol the equipment, and the operation status of each inspection data is evaluated to obtain the interval status and status change value of the outgoing line interval.

[0065] It should be noted that refer toFigure 2 As shown in the figure, the substation equipment in the outgoing line bay includes switches, bus disconnectors, line disconnectors, and line earthing switches.

[0066] It should be noted that there are multiple outgoing line bays in the substation.

[0067] It is worth mentioning that as shown in Table 1, the electrical equipment status of the outgoing line bay includes the operating state, hot standby state, cold standby state, and maintenance state. When the electrical equipment status is the operating state, the switch in the outgoing line bay is closed, the bus disconnector is closed, the line disconnector is closed, and the line earthing switch is open. When the electrical equipment status is the hot standby state, the switch in the outgoing line bay is open, the bus disconnector is closed, the line disconnector is closed, and the line earthing switch is open. When the electrical equipment status is the cold standby state, the switch in the outgoing line bay is open, the bus disconnector is open, the line disconnector is open, and the line earthing switch is open. When the electrical equipment status is the maintenance state, the switch in the outgoing line bay is open, the bus disconnector is open, the line disconnector is open, and the line earthing switch is closed.

[0068] Table 1

[0069]

[0070] Step 102: Determine whether the bay status is a preset abnormal conversion status.

[0071] In the embodiment of the present invention, it is determined whether the bay status of the outgoing line bay is an abnormal conversion status.

[0072] Step 103: If the bay status is an abnormal conversion status, perform a fault analysis on the state change value, the equipment type of each substation equipment, and the inspection data to obtain the status monitoring results corresponding to each substation equipment.

[0073] In the embodiment of the present invention, if the bay status of the outgoing line bay is an abnormal conversion status, it indicates that there is a fault in the substation equipment of the outgoing line bay. Perform a fault analysis on the state change value, the equipment type of each substation equipment, and the inspection data to obtain the status monitoring results corresponding to each substation equipment.

[0074] Step 104: If the bay status is not an abnormal conversion status, determine that the status monitoring results corresponding to each substation equipment are normal operation of the equipment.

[0075] In the embodiment of the present invention, if the bay status is not an abnormal conversion status, it indicates that the substation equipment on the outgoing line bay is operating normally. Take the normal operation of the equipment as the status monitoring results corresponding to each substation equipment.

[0076] In an embodiment of the present invention, inspection data of multiple substation devices in an outgoing line interval is obtained, and the operation status of each inspection data is evaluated to obtain the interval status and the status change value of the outgoing line interval. Then, based on the interval status, the status change value, and each inspection data, the status monitoring result of each substation device is determined. This overcomes the technical problem of the prior art that mainly relies on inspection personnel arriving at the site to confirm the status of substation devices before and after operation, but the manual verification method has poor real-time performance, is difficult to meet the high-efficiency requirements of sequence control operation, and reduces the reliability of substation operation. Compared with the traditional substation device monitoring method, in the present invention, by evaluating the operation status of multiple inspection data, the interval status and the status change value of the outgoing line interval are obtained. When the interval status is not an abnormal conversion state, the substation device is directly marked as operating normally, shortening the processing time for the non-abnormal scenario and improving the reliability of substation operation.

[0077] Please refer to Figure 3 , Figure 3 which is the step flowchart of a method for monitoring the status of substation devices provided in the second embodiment of the present invention.

[0078] A method for monitoring the status of substation devices provided by the present invention includes:

[0079] Step 201: Obtain inspection data of multiple substation devices in an outgoing line interval, and evaluate the operation status of each inspection data to obtain the interval status and the status change value of the outgoing line interval.

[0080] Further, the inspection data includes first device data and second device data, and step 201 includes the following sub-steps:

[0081] S11: Input each first device data and each second device data into a preset device status function respectively to obtain the initial device status value and the target device status value corresponding to the outgoing line interval.

[0082] The first device data refers to the device operation data before the sequence control operation of the substation device.

[0083] The second device data refers to the device operation data after the sequence control operation of the substation device.

[0084] The initial device status value refers to the device status value of the outgoing line interval before the sequence control operation.

[0085] The target device status value refers to the device status value of the outgoing line interval after the sequence control operation.

[0086] In the embodiments of the present invention, each piece of first device data is respectively input into a preset device state function to obtain an initial device state value corresponding to the outgoing line interval, and each piece of second device data is respectively input into the preset device state function to obtain a target device state value corresponding to the outgoing line interval.

[0087] It should be noted that the device state function is specifically:

[0088]

[0089] Wherein, is the device state value, is the switch color coefficient of the i-th substation device, n is the number of substation devices on the outgoing line interval, i is the device number, is the effective distance value of the i-th substation device (when the substation device is a switch, take 0), is the temperature measurement value of the i-th device, is the outdoor temperature, is the outdoor wind speed.

[0090] S12. Calculate the first difference between the initial device state value and the target device state value, and take the absolute value of the first difference as the state change value.

[0091] In the embodiments of the present invention, the initial device state value and the target device state value are input into a preset state change function to obtain the state change value.

[0092] It should be noted that the state change function is specifically:

[0093]

[0094] Wherein, is the state change value, is the initial device state value, is the target device state value.

[0095] S13. Generate a corresponding target key by using the initial device state value and the target device state value;

[0096] In the embodiments of the present invention, a corresponding target key is generated by using the initial device state value and the target device state value of the outgoing line interval.

[0097] S14. Retrieve a preset list of interval state key-value pairs by using the target key to match the interval state corresponding to the outgoing line interval.

[0098] In the embodiments of the present invention, the target key is input into a preset list of interval state key-value pairs to match the interval state corresponding to the outgoing line interval. The list of interval state key-value pairs is shown in Table 2.

[0099] Table 2

[0100]

[0101] Step 202: Determine whether the interval state is a preset abnormal conversion state.

[0102] It should be noted that the abnormal conversion states include the state of changing from maintenance to cold standby, the state of changing from maintenance to hot standby, the state of changing from cold standby to maintenance, the state of changing from cold standby to hot standby, the state of changing from hot standby to maintenance, the state of changing from hot standby to cold standby, and the equipment not being operated.

[0103] In the embodiment of the present invention, it is determined whether the interval state is an abnormal conversion state, where the abnormal conversion states include the state of changing from maintenance to cold standby, the state of changing from maintenance to hot standby, the state of changing from cold standby to maintenance, the state of changing from cold standby to hot standby, the state of changing from hot standby to maintenance, the state of changing from hot standby to cold standby, and the equipment not being operated.

[0104] It is worth mentioning that referring to Figure 4 and Table 2, it can be seen that when the interval state is an abnormal conversion state, it indicates that the conversion of the outgoing line interval does not conform to the equipment state conversion, that is, the sequence control operation task is not completed.

[0105] Step 203: If the interval state is an abnormal conversion state, then determine whether the state change value is greater than a preset error threshold.

[0106] In the embodiment of the present invention, if the interval state is an abnormal conversion state, then it is determined whether the state change value of the outgoing line interval is greater than a preset error threshold.

[0107] Step 204: If the state change value is less than or equal to the error threshold, then determine that the status monitoring results corresponding to each substation equipment are normal equipment operation.

[0108] In the embodiment of the present invention, if the state change value is less than or equal to the error threshold, then the normal equipment operation is used as the status monitoring results corresponding to each substation equipment.

[0109] Step 205: If the state change value is greater than the error threshold, then determine the status monitoring results corresponding to each substation equipment according to the equipment type and inspection data of each substation equipment respectively.

[0110] Furthermore, the inspection data includes the length of the conductive rod, the effective distance value, the outdoor temperature, the equipment temperature increment, the equipment surface area, and the equipment rust area. Step 205 includes the following sub-steps:

[0111] S21: Determine whether the equipment type of each substation equipment is a switch respectively.

[0112] S22: If the equipment type is a switch, then use the preset initial offset as the target offset of the substation equipment.

[0113] In an embodiment of the present invention, it is determined whether the device type of each substation device is a switch. When the device type is a switch, the target offset of the substation device is determined to be 0.

[0114] S23. If the device type is not a switch, the length of the conductive rod of the substation device is subtracted from the effective distance value to obtain a second difference.

[0115] S24. The second difference is divided by the length of the conductive rod to obtain the target offset.

[0116] In an embodiment of the present invention, when the device type is not a switch, the length of the conductive rod of the substation device and the effective distance value are input into a preset offset function to obtain the target offset.

[0117] It should be noted that the offset function is specifically:

[0118]

[0119] Wherein, is the target offset of the i-th substation device, is the length of the conductive rod, is the effective distance value of the i-th substation device.

[0120] S25. The ratio of the rust area of each substation device to the surface area of the device is processed to obtain the surface rust amount of each substation device.

[0121] In an embodiment of the present invention, the rust area of each substation device and the surface area of the device are input into a preset surface rust amount function to obtain the surface rust amount of each substation device.

[0122] It should be noted that the surface rust amount function is specifically:

[0123]

[0124] Wherein, is the surface rust amount of the i-th substation device, is the rust area, is the surface area of the device.

[0125] S26. The outdoor temperature and the device temperature increment corresponding to each substation device are respectively evaluated for heat generation to obtain the device heat generation corresponding to each substation device.

[0126] Further, S26 includes the following sub-steps:

[0127] S261. Add up the outdoor temperature and the equipment temperature increment corresponding to each substation equipment respectively to obtain multiple first sums.

[0128] S262. Perform a ratio process on the preset equipment heating alarm threshold and each of the first sums respectively to obtain multiple first ratios.

[0129] S263. Perform a difference process on the preset heating coefficient and each of the first ratios respectively to obtain the equipment heat generation corresponding to each substation equipment.

[0130] In an embodiment of the present invention, the outdoor temperature and the equipment temperature increment (i.e., the temperature increment of the equipment relative to the daily temperature) corresponding to each substation equipment are input into a preset equipment heat generation function to obtain the equipment heat generation corresponding to each substation equipment.

[0131] It should be noted that the equipment heat generation function is specifically:

[0132]

[0133] Among them, is the equipment heat generation of the i-th substation equipment, is the equipment heating alarm threshold, is the outdoor temperature, is the equipment temperature increment.

[0134] S27. Perform equipment status evaluation on the target offset, equipment surface rust amount, and equipment heat generation corresponding to each substation equipment respectively to obtain the status monitoring results corresponding to each substation equipment.

[0135] Further, S27 includes the following sub-steps:

[0136] S271. Perform weighted calculation on the target offset, equipment surface rust amount, and equipment heat generation corresponding to each substation equipment according to the preset equipment failure weight respectively to obtain the equipment failure degree corresponding to each substation equipment.

[0137] In an embodiment of the present invention, the target offset, equipment surface rust amount, and equipment heat generation corresponding to each substation equipment are input into a preset equipment failure degree function to obtain the equipment failure degree corresponding to each substation equipment.

[0138] It should be noted that the equipment failure degree function is specifically:

[0139]

[0140] Among them, is the equipment failure degree of the i-th substation equipment, is the first equipment failure weight coefficient, is the failure weight coefficient of the second device, is the failure weight coefficient of the third device, is the target offset of the equipment of the i-th substation, is the amount of surface corrosion of the equipment of the i-th substation, is the heat generation of the equipment of the i-th substation.

[0141] S272. Determine whether the failure degree of each device is greater than a preset first failure threshold.

[0142] In the embodiment of the present invention, it is determined whether the failure degree of each device is greater than 25%.

[0143] S273. If the failure degree of the device is less than or equal to the first failure threshold, then use the preset first warning value as the status monitoring result of the substation equipment associated with the failure degree of the device.

[0144] In the embodiment of the present invention, if the failure degree of the device is less than or equal to 25%, then use the level IV failure as the status monitoring result of the substation equipment associated with the failure degree of the device.

[0145] S274. If the failure degree of the device is greater than the first failure threshold, then determine whether the failure degree of the device is greater than a preset second failure threshold.

[0146] In the embodiment of the present invention, if the failure degree of the device is greater than 25%, then determine whether the failure degree of the device is greater than 50%.

[0147] S275. If the failure degree of the device is less than or equal to the second failure threshold, then use the preset second warning value as the status monitoring result of the substation equipment associated with the failure degree of the device.

[0148] In the embodiment of the present invention, if the failure degree of the device is less than or equal to 50%, then use the level III failure as the status monitoring result of the substation equipment associated with the failure degree of the device.

[0149] S276. If the failure degree of the device is greater than the second failure threshold, then determine whether the failure degree of the device is greater than a preset third failure threshold.

[0150] In the embodiment of the present invention, if the failure degree of the device is greater than 50%, then determine whether the failure degree of the device is greater than 75%.

[0151] S277. If the failure degree of the device is less than or equal to the third failure threshold, then use the preset third warning value as the status monitoring result of the substation equipment associated with the failure degree of the device.

[0152] In the embodiment of the present invention, if the failure degree of the device is less than or equal to 75%, then use the level II failure as the status monitoring result of the substation equipment associated with the failure degree of the device.

[0153] S278. If the equipment failure degree is greater than the third failure threshold, then use the preset fourth warning value as the status monitoring result of the substation equipment associated with the equipment failure degree.

[0154] In the embodiment of the present invention, if the equipment failure degree is greater than 75%, then use the Class I failure as the status monitoring result of the substation equipment associated with the equipment failure degree.

[0155] Step 206. If the interval status is not the abnormal conversion state, then determine that the status monitoring results corresponding to each substation equipment are normal equipment operation.

[0156] In the embodiment of the present invention, if the interval status is not the abnormal conversion state, then use normal equipment operation as the status monitoring results corresponding to each substation equipment.

[0157] In the embodiment of the present invention, the inspection data of multiple substation equipments on the outgoing line interval are obtained, and the operation status of each inspection data is evaluated to obtain the interval status and the status change value of the outgoing line interval. Then, according to the interval status, the status change value and each inspection data, the status monitoring results of each substation equipment are determined. It overcomes the technical problem that the prior art mainly relies on the inspection personnel to arrive at the site to confirm the status of the substation equipment before and after the operation, but the manual verification method has poor real-time performance, is difficult to meet the high-efficiency requirements of the sequence control operation, and reduces the reliability of the substation operation. Compared with the traditional substation equipment monitoring method, the present invention evaluates the operation status of multiple inspection data to obtain the interval status and the status change value of the outgoing line interval. When the interval status is not the abnormal conversion state, the substation equipment is directly marked as operating normally, shortening the processing time for the non-abnormal scenario and improving the reliability of the substation operation.

[0158] Please refer to Figure 5 , Figure 5 which is the structural block diagram of a status monitoring system for substation equipment provided in Embodiment 3 of the present invention.

[0159] A status monitoring system for substation equipment provided by the present invention includes:

[0160] An acquisition module 301, configured to obtain the inspection data of multiple substation equipments on the outgoing line interval, and evaluate the operation status of each inspection data to obtain the interval status and the status change value of the outgoing line interval;

[0161] An analysis module 302, configured to determine whether the interval status is a preset abnormal conversion state;

[0162] A first monitoring module 303, configured to, if the interval status is the abnormal conversion state, perform fault analysis on the status change value, the equipment type of each substation equipment, and the inspection data to obtain the status monitoring results corresponding to each substation equipment;

[0163] The second monitoring module 304 is configured to determine that the status monitoring results corresponding to each substation device are normal when the interval status is not an abnormal conversion status.

[0164] Furthermore, the inspection data includes first device data and second device data. The acquisition module 301 includes:

[0165] The first analysis sub-module is configured to input each piece of first device data and each piece of second device data into a preset device status function respectively to obtain an initial device status value and a target device status value corresponding to the outgoing line interval.

[0166] The first difference sub-module is configured to calculate a first difference between the initial device status value and the target device status value, and use the absolute value of the first difference as the status change value.

[0167] The target key sub-module is configured to generate a corresponding target key by using the initial device status value and the target device status value.

[0168] The matching sub-module is configured to retrieve a preset list of interval status key-value pairs by using the target key to match the interval status corresponding to the outgoing line interval.

[0169] Furthermore, the first monitoring module 303 includes:

[0170] The second analysis sub-module is configured to determine whether the status change value is greater than a preset error threshold.

[0171] The first status evaluation sub-module is configured to determine that the status monitoring results corresponding to each substation device are normal when the status change value is less than or equal to the error threshold.

[0172] The second status evaluation sub-module is configured to determine the status monitoring results corresponding to each substation device respectively according to the device type and inspection data of each substation device when the status change value is less than or equal to the error threshold.

[0173] Furthermore, the inspection data includes the length of the conductive rod, the effective distance value, the outdoor temperature, the equipment temperature increment, the equipment surface area, and the equipment rust area. The second status evaluation sub-module includes:

[0174] The first analysis unit is configured to determine whether the device type of each substation device is a switch respectively.

[0175] If the device type is a switch, use the preset initial offset as the target offset of the substation device.

[0176] If the device type is not a switch, perform a difference process on the length of the conductive rod of the substation device and the effective distance value to obtain a second difference.

[0177] The second difference is processed by taking the ratio with the length of the conductive rod to obtain the target offset;

[0178] The second analysis unit is configured to respectively process the ratio of the equipment corrosion area corresponding to each substation equipment to the equipment surface area to obtain the equipment surface corrosion amount corresponding to each substation equipment;

[0179] The third analysis unit is configured to respectively evaluate the heat generation of the outdoor temperature and the equipment temperature increment corresponding to each substation equipment to obtain the equipment heat generation corresponding to each substation equipment;

[0180] The fourth analysis unit is configured to respectively evaluate the equipment status of the target offset, the equipment surface corrosion amount, and the equipment heat generation corresponding to each substation equipment to obtain the status monitoring result corresponding to each substation equipment.

[0181] Further, the third analysis unit includes:

[0182] The summing subunit is configured to respectively sum the outdoor temperature and the equipment temperature increment corresponding to each substation equipment to obtain a plurality of first sums;

[0183] The ratio subunit is configured to respectively process the ratio of the preset equipment heat generation warning threshold to each first sum to obtain a plurality of first ratios;

[0184] The difference subunit is configured to respectively process the difference between the preset heat generation coefficient and each first ratio to obtain the equipment heat generation corresponding to each substation equipment.

[0185] Further, the fourth analysis unit includes:

[0186] The weighting subunit is configured to respectively perform weighted calculation on the target offset, the equipment surface corrosion amount, and the equipment heat generation corresponding to each substation equipment according to the preset equipment failure weight to obtain the equipment failure degree corresponding to each substation equipment;

[0187] The evaluation subunit is configured to determine whether each equipment failure degree is greater than the preset first failure threshold;

[0188] If the equipment failure degree is less than or equal to the first failure threshold, the preset first warning value is used as the status monitoring result of the substation equipment associated with the equipment failure degree;

[0189] If the equipment failure degree is greater than the first failure threshold, it is determined whether the equipment failure degree is greater than the preset second failure threshold;

[0190] If the equipment failure degree is less than or equal to the second failure threshold, the preset second warning value is used as the status monitoring result of the substation equipment associated with the equipment failure degree;

[0191] If the device failure degree is greater than the second failure threshold, it is determined whether the device failure degree is greater than a preset third failure threshold;

[0192] If the device failure degree is less than or equal to the third failure threshold, the preset third warning value is used as the status monitoring result of the substation equipment associated with the device failure degree;

[0193] If the device failure degree is greater than the third failure threshold, the preset fourth warning value is used as the status monitoring result of the substation equipment associated with the device failure degree.

[0194] Furthermore, the abnormal conversion states include the state of changing from maintenance to cold standby, the state of changing from maintenance to hot standby, the state of changing from cold standby to maintenance, the state of changing from cold standby to hot standby, the state of changing from hot standby to maintenance, the state of changing from hot standby to cold standby, and the device not being operated.

[0195] Please refer to Figure 6 , Figure 6 , which is a structural block diagram of an electronic device provided in Embodiment 4 of the present invention.

[0196] An electronic device according to an embodiment of the present invention, the electronic device includes: a memory 401 and a processor 402, and a computer program is stored in the memory 402; when the computer program is executed by the processor 402, the processor 402 is caused to execute the status monitoring method of the substation equipment according to any one of the above embodiments.

[0197] The memory 401 may be an electronic memory such as a flash memory, an EEPROM (electrically erasable programmable read-only memory), an EPROM, a hard disk, or a ROM. The memory 401 has a storage space 403 for program code 413 for executing any method step in the above method. For example, the storage space 403 for program code may include respective program codes 413 for implementing various steps in the above method. These program codes may be read from or written into one or more computer program products. These computer program products include program code carriers such as hard disks, compact discs (CDs), memory cards, or floppy disks. The program code may be compressed in a suitable form. When these codes are run by a computing processing device, the computing processing device is caused to execute each step in the method described above.

[0198] Embodiment 5 of the present invention further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the status monitoring method of the substation equipment according to any one of the above embodiments is implemented.

[0199] Those skilled in the art can clearly understand that for the convenience and conciseness of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein.

[0200] In several embodiments provided in the present application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces, and the indirect couplings or communication connections of devices or units can be in electrical, mechanical, or other forms.

[0201] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0202] In addition, each functional unit in various embodiments of the present invention can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

[0203] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods in various embodiments of the present invention. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks, or optical discs that can store program codes.

[0204] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A method for monitoring the state of substation equipment, characterized in that, Including: Obtain the inspection data of multiple substation devices in the outgoing line interval, and perform an operation status evaluation on each of the inspection data to obtain the interval status and the status change value of the outgoing line interval; Judge whether the interval status is a preset abnormal conversion status; If the interval status is the abnormal conversion status, perform a fault analysis on the status change value, the device type of each substation device, and the inspection data to obtain the status monitoring results corresponding to each substation device; If the interval status is not the abnormal conversion status, determine that the status monitoring results corresponding to each substation device are normal device operation; The inspection data includes first device data and second device data. The step of performing an operation status evaluation on each of the inspection data to obtain the interval status and the status change value of the outgoing line interval includes: Input each of the first device data and each of the second device data into a preset device status function respectively to obtain the initial device status value and the target device status value corresponding to the outgoing line interval; Calculate the first difference between the initial device status value and the target device status value, and use the absolute value of the first difference as the status change value; Generate a corresponding target key using the initial device status value and the target device status value; Retrieve a preset list of interval status key-value pairs using the target key to match the interval status corresponding to the outgoing line interval; The device status function is specifically: ； Among them, is the device status value, is the switch color coefficient of the i-th substation device, n is the number of substation devices in the outgoing line interval, and i is the device number. is the effective distance value of the i-th substation device. When the substation device is a switch, take 0, is the temperature measurement value of the i-th device, is the outdoor temperature, is the outdoor wind speed; - The step of performing a fault analysis on the status change value, the device type of each substation device, and the inspection data to obtain the status monitoring results corresponding to each substation device includes: Judge whether the status change value is greater than a preset error threshold; If the status change value is less than or equal to the error threshold, determine that the status monitoring results corresponding to each substation device are normal device operation; If the status change value is greater than the error threshold, determine the status monitoring results corresponding to each substation device respectively according to the device type and inspection data of each substation device; The inspection data includes the length of the conductive rod, the effective distance value, the outdoor temperature, the device temperature increment, the device surface area, and the device rust area. The step of determining the status monitoring results corresponding to each substation device respectively according to the device type and inspection data of each substation device includes: Judge whether the device type of each substation device is a switch respectively; If the device type is a switch, use a preset initial offset as the target offset of the substation device; If the device type is not a switch, perform a difference process on the length of the conductive rod of the substation device and the effective distance value to obtain a second difference; Perform a ratio process on the second difference and the length of the conductive rod to obtain the target offset; Perform a ratio process on the device rust area corresponding to each substation device and the device surface area respectively to obtain the device surface rust amount corresponding to each substation device; The heat generation of each of the substation devices is evaluated by separately evaluating the outdoor temperature and the equipment temperature increment corresponding to each of the substation devices, and the equipment heat generation corresponding to each of the substation devices is obtained. The equipment status of each of the substation devices is evaluated by separately evaluating the target offset, the equipment surface rust amount, and the equipment heat generation corresponding to each of the substation devices, and the status monitoring result corresponding to each of the substation devices is obtained.

2. The method for monitoring the state of substation equipment according to claim 1, wherein The step of separately evaluating the outdoor temperature and the equipment temperature increment corresponding to each of the substation devices to obtain the equipment heat generation corresponding to each of the substation devices includes: The outdoor temperature and the equipment temperature increment corresponding to each of the substation devices are separately summed to obtain a plurality of first sums. The preset equipment heat generation warning threshold is separately ratio-processed with each of the first sums to obtain a plurality of first ratios. The preset heat generation coefficient is separately difference-processed with each of the first ratios to obtain the equipment heat generation corresponding to each of the substation devices.

3. The method for monitoring the state of substation equipment according to claim 1, wherein The step of separately evaluating the target offset, the equipment surface rust amount, and the equipment heat generation corresponding to each of the substation devices to obtain the status monitoring result corresponding to each of the substation devices includes: The target offset, the equipment surface rust amount, and the equipment heat generation corresponding to each of the substation devices are separately weighted and calculated according to the preset equipment failure weight to obtain the equipment failure degree corresponding to each of the substation devices. It is determined whether each of the equipment failure degrees is greater than a preset first failure threshold. If the equipment failure degree is less than or equal to the first failure threshold, the preset first warning value is used as the status monitoring result of the substation device associated with the equipment failure degree. If the equipment failure degree is greater than the first failure threshold, it is determined whether the equipment failure degree is greater than a preset second failure threshold. If the equipment failure degree is less than or equal to the second failure threshold, the preset second warning value is used as the status monitoring result of the substation device associated with the equipment failure degree. If the equipment failure degree is greater than the second failure threshold, it is determined whether the equipment failure degree is greater than a preset third failure threshold. If the equipment failure degree is less than or equal to the third failure threshold, the preset third warning value is used as the status monitoring result of the substation device associated with the equipment failure degree. If the equipment failure degree is greater than the third failure threshold, the preset fourth warning value is used as the status monitoring result of the substation device associated with the equipment failure degree.

4. The method for monitoring the state of substation equipment according to claim 1, wherein The abnormal conversion state includes the state of changing from maintenance to cold standby, the state of changing from maintenance to hot standby, the state of changing from cold standby to maintenance, the state of changing from cold standby to hot standby, the state of changing from hot standby to maintenance, the state of changing from hot standby to cold standby, and the equipment not being operated.

5. A state monitoring system for substation equipment, characterized in that, It includes: An acquisition module, configured to acquire the inspection data of a plurality of substation devices on the outgoing line interval, and perform an operation status evaluation on each of the inspection data to obtain the interval status and the status change value of the outgoing line interval. An analysis module, configured to determine whether the interval status is a preset abnormal conversion state. The first monitoring module is used to perform fault analysis on the state change value, the device type of each substation device, and the inspection data when the interval state is the abnormal conversion state, so as to obtain the state monitoring results corresponding to each substation device; The second monitoring module is used to determine that the state monitoring results corresponding to each substation device are normal when the interval state is not the abnormal conversion state; The inspection data includes first device data and second device data, and the acquisition module includes: The first analysis sub-module is used to input each piece of the first device data and each piece of the second device data into a preset device state function respectively to obtain the initial device state value and the target device state value corresponding to the outgoing line interval; The first difference sub-module is used to calculate the first difference between the initial device state value and the target device state value, and take the absolute value of the first difference as the state change value; The target key sub-module is used to generate a corresponding target key by using the initial device state value and the target device state value; The matching sub-module is used to retrieve a preset interval state key-value pair list by using the target key to match the interval state corresponding to the outgoing line interval; The device state function is specifically: ； Among them, is the device status value, is the switch color coefficient of the i-th substation device, n is the number of substation devices on the outgoing line interval, and i is the device number, is the effective distance value of the i-th substation device. When the substation device is a switch, take 0, is the temperature measurement value of the i-th device, is the outdoor temperature, is the outdoor wind speed; The first monitoring module includes: The second analysis sub-module is used to judge whether the state change value is greater than a preset error threshold; The first state evaluation sub-module is used to determine that the state monitoring results corresponding to each substation device are normal when the state change value is less than or equal to the error threshold; The second state evaluation sub-module is used to determine the state monitoring results corresponding to each substation device respectively according to the device type and inspection data of each substation device when the state change value is greater than the error threshold; The inspection data includes the length of the conductive rod, the effective distance value, the outdoor temperature, the equipment temperature increment, the equipment surface area, and the equipment rust area. The second state evaluation sub-module includes: The first analysis unit is used to judge whether the device type of each substation device is a switch respectively; If the device type is a switch, use the preset initial offset as the target offset of the substation device; If the device type is not a switch, perform a difference process on the length of the conductive rod of the substation device and the effective distance value to obtain a second difference; Perform a ratio process on the second difference and the length of the conductive rod to obtain the target offset; The second analysis unit is used to perform a ratio process on the equipment rust area and the equipment surface area corresponding to each substation device respectively to obtain the equipment surface rust amount corresponding to each substation device; The third analysis unit is used to perform heat generation evaluation on the outdoor temperature and the equipment temperature increment corresponding to each substation device respectively to obtain the equipment heat generation corresponding to each substation device; The fourth analysis unit is used to perform equipment state evaluation on the target offset, the equipment surface rust amount, and the equipment heat generation corresponding to each substation device respectively to obtain the state monitoring results corresponding to each substation device.

6. An electronic device, characterized in that, It includes a memory and a processor. A computer program is stored in the memory. When the computer program is executed by the processor, the processor is caused to execute the steps of the method for monitoring the state of substation equipment as described in any one of claims 1 to 4.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed, it implements the method for monitoring the state of substation equipment as described in any one of claims 1 to 4.

Images