Substation equipment state monitoring method and system

Abstract

The invention discloses a substation equipment state monitoring method and system, and relates to the technical field of substation equipment state monitoring, and the method comprises the steps: obtaining the inspection data of a plurality of substation equipment on an outgoing line interval, carrying out the operation state evaluation of each inspection data, and obtaining the interval state and state change value of the outgoing line interval; judging whether the interval state is a preset abnormal conversion state, if the interval state is the abnormal conversion state, performing fault analysis on the state change value, the equipment type of each substation equipment and the inspection data to obtain a state monitoring result corresponding to each substation equipment, and if the interval state is not the abnormal conversion state, performing fault analysis on the state monitoring result corresponding to each substation equipment. And if yes, determining that the equipment runs normally according to the state monitoring result corresponding to each substation equipment. The technical problems that in the prior art, the substation equipment state before and after operation is confirmed mainly through inspection personnel arriving at the site, but the method is poor in real-time performance, the efficient requirement of sequential control operation is difficult to meet, and the operation reliability of a substation is reduced are solved.

Description

Technical Field

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

[0002] With the continuous expansion of the scale of power systems and the increase in the demand for intelligence, the operation mode of substations has gradually changed from traditional manual operation to programmed and automated operation. As an efficient automated operation method, sequential control operation automatically completes the sequential control of switches, switches and other equipment through preset operation logic, significantly improving operation efficiency and reducing the risk of human error. However, the reliability and safety of sequential control operation are highly dependent on the accurate judgment of the status of substation equipment, especially before and after the operation, the status of substation equipment needs to be verified twice to ensure the correctness of the operation results and the stability of equipment operation. Therefore, there is an urgent need for a status monitoring method for substation equipment.

[0003] At present, the existing technology 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 efficient requirements of sequential control operations, 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 sequential control operations, and reduces the reliability of substation operation.

[0005] A first aspect of the present invention provides a method for monitoring the status of a substation device, comprising:

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

[0007] Determining whether the interval state is a preset abnormal conversion state;

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

[0009] If the interval state is not the abnormal conversion state, the state monitoring result corresponding to each of the substation equipment is determined as the equipment operating normally.

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

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

[0012] Calculating a first difference between the initial device state value and the target device state value, and taking an absolute value of the first difference as a state change value;

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

[0014] The target key is used to retrieve a preset interval status key-value pair list to match the interval status corresponding to the outgoing line interval.

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

[0016] Determining whether the state change value is greater than a preset error threshold;

[0017] If the state change value is less than or equal to the error threshold, the state monitoring result corresponding to each of the substation equipment is determined as the equipment operating normally;

[0018] If the state change value is greater than the error threshold, the state monitoring result corresponding to each of the substation equipment is determined according to the equipment type and inspection data of each of the substation equipment.

[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 corrosion area, and the step of determining the status monitoring result corresponding to each of the substation equipment according to the equipment type and the inspection data of each of the substation equipment includes:

[0020] Determine respectively whether the equipment type of each substation equipment is a switch;

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

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

[0023] Performing ratio processing on the second difference and the length of the conductive rod to obtain the target offset;

[0024] Respectively performing ratio processing on the equipment corrosion area and equipment surface area corresponding to each of the substation equipment to obtain the equipment surface corrosion amount corresponding to each of the substation equipment;

[0025] Evaluate the heat generation of the outdoor temperature and the equipment temperature increment corresponding to each of the substation equipment respectively, and obtain the equipment heat generation corresponding to each of the substation equipment;

[0026] The target offset, the amount of equipment surface corrosion and the amount of equipment heat generated corresponding to each of the substation equipment are evaluated for equipment status, and the status monitoring results corresponding to each of the substation equipment are obtained.

[0027] Optionally, the step of respectively evaluating the outdoor temperature and the equipment temperature increment corresponding to each of the substation equipment to obtain the equipment heating value corresponding to each of the substation equipment includes:

[0028] Respectively summing the outdoor temperature and the equipment temperature increment corresponding to each of the substation equipment to obtain a plurality of first sum values;

[0029] Performing ratio processing on a preset device heating alarm threshold and each of the first sum values ​​respectively to obtain a plurality of first ratios;

[0030] The preset heating coefficient and each of the first ratios are respectively subjected to difference processing to obtain the equipment heating value corresponding to each of the substation equipment.

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

[0032] The target offset, the amount of equipment surface corrosion and the amount of equipment heat generated corresponding to each of the substation equipment are weightedly calculated according to the preset equipment failure weights to obtain the equipment failure degree corresponding to each of the substation equipment;

[0033] Determining whether the failure degree of each of the devices is greater than a preset first failure threshold;

[0034] If the equipment failure degree is less than or equal to the first failure threshold, a preset first warning value is used as a status monitoring result of the substation equipment associated with the equipment failure degree;

[0035] If the device failure degree is greater than the first failure threshold, determining whether the device failure degree is greater than a preset second failure threshold;

[0036] 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;

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

[0038] 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 equipment associated with the equipment failure degree;

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

[0040] Optionally, the abnormal conversion state includes maintenance to cold standby state, maintenance to hot standby state, cold standby to maintenance state, cold standby to hot standby state, hot standby to maintenance state, hot standby to cold standby state and equipment not operating.

[0041] A second aspect of the present invention provides a state monitoring system for substation equipment, comprising:

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

[0043] An analysis module, used for determining whether the interval state is a preset abnormal conversion state;

[0044] A first monitoring module is used for, if the interval state is the abnormal conversion state, performing fault analysis on the state change value, the equipment type and inspection data of each of the substation equipment, and obtaining a state monitoring result corresponding to each of the substation equipment;

[0045] The second monitoring module is used to determine the status monitoring result corresponding to each of the substation equipment as normal operation of the equipment if the interval status is not the abnormal conversion status.

[0046] A third aspect of the present invention provides an electronic device, comprising a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the steps of the method for status monitoring of substation equipment as described in any one of the above items.

[0047] A fourth aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed, implements the method for status monitoring of substation equipment as described in any one of the above items.

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

[0049] The inspection data of multiple substation equipment on the outgoing line interval is obtained, and the operation status of each inspection data is evaluated to obtain the interval status and state change value of the outgoing line interval, and then the state monitoring result of each substation equipment is determined according to the interval status, state 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 the operation, but the manual verification method has poor real-time performance, is difficult to meet the high-efficiency requirements of sequential control operations, and reduces the reliability of substation operation. Compared with the traditional substation equipment monitoring method, the present invention obtains the interval status and state change value of the outgoing line interval by evaluating the operation status of multiple inspection data. If the interval status is not an abnormal conversion state, the substation equipment is directly marked as operating normally, which shortens the processing time of non-abnormal scenes and improves the reliability of substation operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0051] Figure 1 A flowchart of a method for monitoring the status of a substation device provided in Embodiment 1 of the present invention;

[0052] Figure 2 A schematic diagram of the structure of the outgoing line interval provided in the first embodiment of the present invention;

[0053] Figure 3 A flowchart of a method for monitoring the status of a substation device provided in Embodiment 2 of the present invention;

[0054] Figure 4 A diagram of the state change of substation equipment provided in the second embodiment of the present invention;

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

[0056] Figure 6 This is a structural block diagram of an electronic device provided in Embodiment 4 of the present invention. DETAILED DESCRIPTION

[0057] The embodiment of the present invention provides a state monitoring method and system for substation equipment, which is used to solve the technical problem that the prior art mainly relies on inspection personnel to arrive at the site to confirm the state of substation equipment before and after operation, but the manual verification method has poor real-time performance, is difficult to meet the efficient requirements of sequential control operations, and reduces the reliability of substation operation.

[0058] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0059] See also Figure 1 , Figure 1 A flowchart of the steps of a method for status monitoring of substation equipment provided in Embodiment 1 of the present invention.

[0060] The present invention provides a method for monitoring the status of a substation device, comprising:

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

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

[0063] The interval status refers to the change in the status of electrical equipment in the outgoing line interval during sequential control in the substation, where the changes in the status of electrical equipment include operation to hot standby status, operation to cold standby status, operation to maintenance status, hot standby to operation status, hot standby to cold standby status, hot standby to maintenance status, cold standby to operation status, cold standby to hot standby status, cold standby to maintenance status, maintenance to operation status, maintenance to hot standby status, maintenance to cold standby status, and equipment not operating.

[0064] In an embodiment of the present invention, inspection data of multiple substation equipment on the outgoing line interval is obtained by using an unmanned aerial vehicle inspection device, 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, see Figure 2 As shown, the substation equipment on the outgoing line bay includes switches, busbar switches, line switches and line ground switches.

[0066] It should be noted that the substation includes multiple outgoing line bays.

[0067] It is worth mentioning that, as shown in Table 1, the status of the electrical equipment in the outgoing line interval includes the operating status, hot standby status, cold standby status and maintenance status. When the electrical equipment status is the operating status, the switch in the outgoing line interval is closed, the bus knife switch is closed, the line knife switch is closed, and the line ground knife is disconnected. When the electrical equipment status is the hot standby status, the switch in the outgoing line interval is disconnected, the bus knife switch is closed, the line knife switch is closed, and the line ground knife is disconnected. When the electrical equipment status is the cold standby status, the switch in the outgoing line interval is disconnected, the bus knife switch is disconnected, the line knife switch is disconnected, and the line ground knife is disconnected. When the electrical equipment status is the maintenance status, the switch in the outgoing line interval is disconnected, the bus knife switch is disconnected, the line knife switch is disconnected, and the line ground knife is closed.

[0068] Table 1

[0069]

[0070] Step 102: Determine whether the interval state is a preset abnormal conversion state.

[0071] In the embodiment of the present invention, it is determined whether the interval state of the line interval is an abnormal conversion state.

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

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

[0074] Step 104: If the interval status is not an abnormal conversion status, the status monitoring result corresponding to each substation equipment is determined as the equipment operating normally.

[0075] In the embodiment of the present invention, if the bay state is not an abnormal conversion state, it means that the substation equipment on the outgoing line bay is operating normally, and the normal operation of the equipment is used as the state monitoring result corresponding to each substation equipment.

[0076] In an embodiment of the present invention, inspection data of multiple substation equipment on the outgoing line interval is obtained, and the operation status of each inspection data is evaluated to obtain the interval status and state change value of the outgoing line interval, and then the state monitoring result of each substation equipment is determined based on the interval status, state change value and each inspection data. This 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 the operation, but the manual verification method has poor real-time performance, is difficult to meet the efficient requirements of sequential control operations, and reduces the reliability of substation operation. Compared with the traditional substation equipment monitoring method, the present invention obtains the interval status and state change value of the outgoing line interval by evaluating the operation status of multiple inspection data. If the interval status is not an abnormal conversion state, the substation equipment is directly marked as operating normally, which shortens the processing time of non-abnormal scenes and improves the reliability of substation operation.

[0077] See also Figure 3 , Figure 3 A flowchart of the steps of a method for status monitoring of substation equipment provided in Embodiment 2 of the present invention.

[0078] The present invention provides a method for monitoring the status of a substation device, comprising:

[0079] Step 201: Obtain inspection data of multiple substation equipment on the outgoing line interval, and perform operation status evaluation on each inspection data to obtain the interval status and 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 state function respectively to obtain an initial device state value and a target device state value corresponding to the outgoing line interval.

[0082] The first equipment data refers to the equipment operation data before the sequential control operation of the substation equipment.

[0083] The second equipment data refers to the equipment operation data after the sequential control operation of the substation equipment.

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

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

[0086] In an embodiment of the present invention, each first device data is input into a preset device state function to obtain an initial device state value corresponding to the outgoing line interval, and each second device data is input into a 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 status function is specifically:

[0088]

[0089] in, is the device status value, is the switch color coefficient of the i-th substation equipment, n is the number of substation equipment on the outgoing line bay, i is the equipment number, is the effective distance value of the ith substation equipment (when the substation equipment is a switch, it is 0), is the temperature measurement value of the i-th device, is the outdoor temperature, Outdoor wind speed.

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

[0091] In the embodiment 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 a state change value.

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

[0093]

[0094] in, is the state change value, is the initial device status value, The target device status value.

[0095] S13, using the initial device state value and the target device state value to generate a corresponding target key;

[0096] In the embodiment of the present invention, the initial device state value and the target device state value of the outgoing line interval are used to generate the corresponding target key.

[0097] S14. Use the target key to retrieve a preset interval status key-value pair list to match the interval status corresponding to the outgoing line interval.

[0098] In the embodiment of the present invention, the target key is input into a preset interval state key-value pair list to match the interval state corresponding to the line interval. The interval state key-value pair list 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 status includes maintenance to cold standby status, maintenance to hot standby status, cold standby to maintenance status, cold standby to hot standby status, hot standby to maintenance status, hot standby to cold standby status and equipment not operating.

[0103] In an embodiment of the present invention, it is determined whether the interval state is an abnormal conversion state, wherein the abnormal conversion state includes maintenance to cold standby state, maintenance to hot standby state, cold standby to maintenance state, cold standby to hot standby state, hot standby to maintenance state, hot standby to cold standby state and equipment not operating.

[0104] It is worth mentioning that see Figure 4 As can be seen from Table 2, when the interval status is an abnormal conversion status, it means that the outgoing line interval conversion does not comply with the equipment status conversion, that is, the sequential control operation task is not completed.

[0105] Step 203: If the interval state is an abnormal transition state, 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, it is determined whether the state change value of the 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, the state monitoring result corresponding to each substation equipment is determined as the equipment operating normally.

[0108] In the embodiment of the present invention, if the state change value is less than or equal to the error threshold, the equipment is operating normally as the state monitoring result corresponding to each substation equipment.

[0109] Step 205: If the state change value is greater than the error threshold, the state monitoring result corresponding to each substation device is determined according to the device type and inspection data of each substation device.

[0110] Further, 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 corrosion area. Step 205 includes the following sub-steps:

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

[0112] S22. If the device type is a switch, the preset initial offset is used as the target offset of the substation device.

[0113] In the 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, perform difference processing on the conductive pole length of the substation equipment and the effective distance value to obtain a second difference.

[0115] S24, performing ratio processing on the second difference and the length of the conductive rod to obtain a target offset.

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

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

[0118]

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

[0120] S25. Perform ratio processing on the equipment corrosion area and equipment surface area corresponding to each substation equipment to obtain the equipment surface corrosion amount corresponding to each substation equipment.

[0121] In the embodiment of the present invention, the equipment corrosion area and equipment surface area corresponding to each substation equipment are respectively input into a preset equipment surface corrosion amount function to obtain the equipment surface corrosion amount corresponding to each substation equipment.

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

[0123]

[0124] in, is the surface corrosion amount of the equipment in the i-th substation, is the equipment corrosion area, is the surface area of ​​the equipment.

[0125] S26. Evaluate the heat generation of the outdoor temperature and the equipment temperature increment corresponding to each substation equipment respectively to obtain the equipment heat generation corresponding to each substation equipment.

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

[0127] S261. Add the outdoor temperature and the equipment temperature increment corresponding to each substation equipment respectively to obtain a plurality of first sum values.

[0128] S262: Perform ratio processing on the preset device heating alarm threshold and each first sum value to obtain multiple first ratios.

[0129] S263, performing difference processing on the preset heating coefficient and each first ratio respectively to obtain the equipment heating value corresponding to each substation equipment.

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

[0131] It should be noted that the specific function of the device heat generation is:

[0132]

[0133] in, is the equipment heat of the i-th substation equipment, is the device overheating alarm threshold. is the outdoor temperature, is the device temperature increment.

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

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

[0136] S271. Perform weighted calculations on the target offset, equipment surface corrosion amount and equipment heat generation corresponding to each substation equipment according to preset equipment failure weights, and obtain the equipment failure degree corresponding to each substation equipment.

[0137] In the embodiment of the present invention, the target offset, equipment surface corrosion and equipment heat generation corresponding to each substation equipment are respectively 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] in, is the equipment failure degree of the i-th substation equipment, is the first equipment failure weight coefficient, is the second equipment failure weight coefficient, is the third equipment failure weight coefficient, is the target offset of the i-th substation equipment, is the surface corrosion amount of the equipment in the i-th substation, is the equipment heat generated by the i-th substation equipment.

[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 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.

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

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

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

[0147] S275. 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.

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

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

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

[0151] S277. 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 equipment associated with the equipment failure degree.

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

[0153] S278. 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 equipment associated with the equipment failure degree.

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

[0155] Step 206: If the interval status is not an abnormal conversion status, the status monitoring result corresponding to each substation equipment is determined as the equipment operating normally.

[0156] In the embodiment of the present invention, if the interval state is not an abnormal conversion state, the normal operation of the equipment is taken as the state monitoring result corresponding to each substation equipment.

[0157] In an embodiment of the present invention, inspection data of multiple substation equipment on the outgoing line interval is obtained, and the operation status of each inspection data is evaluated to obtain the interval status and state change value of the outgoing line interval, and then the state monitoring result of each substation equipment is determined based on the interval status, state change value and each inspection data. This 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 the operation, but the manual verification method has poor real-time performance, is difficult to meet the efficient requirements of sequential control operations, and reduces the reliability of substation operation. Compared with the traditional substation equipment monitoring method, the present invention obtains the interval status and state change value of the outgoing line interval by evaluating the operation status of multiple inspection data. If the interval status is not an abnormal conversion state, the substation equipment is directly marked as operating normally, which shortens the processing time of non-abnormal scenes and improves the reliability of substation operation.

[0158] See also Figure 5 , Figure 5 This is a structural block diagram of a status monitoring system for substation equipment provided in Embodiment 3 of the present invention.

[0159] The present invention provides a state monitoring system for substation equipment, comprising:

[0160] The acquisition module 301 is used to 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;

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

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

[0163] The second monitoring module 304 is configured to determine the status monitoring result corresponding to each substation equipment as normal operation of the equipment if the interval status is not an abnormal conversion status.

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

[0165] A first analysis submodule is used to input each first device data and each second device data into a preset device state function to obtain an initial device state value and a target device state value corresponding to the outgoing line interval;

[0166] A first difference submodule, used to calculate a first difference between an initial device state value and a target device state value, and use an absolute value of the first difference as a state change value;

[0167] A target key submodule, used to generate a corresponding target key using an initial device state value and a target device state value;

[0168] The matching submodule is used to use the target key to retrieve a preset interval state key-value pair list to match the interval state corresponding to the outgoing line interval.

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

[0170] The second analysis submodule is used to determine whether the state change value is greater than a preset error threshold;

[0171] A first state evaluation submodule is used to determine the state monitoring result corresponding to each substation equipment as normal operation of the equipment if the state change value is less than or equal to the error threshold;

[0172] The second state evaluation submodule is used to determine the state monitoring result corresponding to each substation equipment according to the equipment type and inspection data of each substation equipment if the state 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 corrosion area. The second state assessment submodule includes:

[0174] A first analysis unit, used to determine whether the equipment type of each substation equipment is a switch;

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

[0176] If the device type is not a switch, the length of the conductive pole of the substation equipment is subjected to difference processing with the effective distance value to obtain a second difference;

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

[0178] The second analysis unit is used to perform ratio processing on the equipment corrosion area and equipment surface area corresponding to each substation equipment, so as to obtain the equipment surface corrosion amount corresponding to each substation equipment;

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

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

[0181] Furthermore, the third analysis unit includes:

[0182] A summing subunit, used for summing the outdoor temperature and the equipment temperature increment corresponding to each substation equipment respectively to obtain a plurality of first sum values;

[0183] A ratio subunit, used for performing ratio processing on a preset device heating alarm threshold and each first sum value respectively to obtain a plurality of first ratios;

[0184] The difference subunit is used to perform difference processing on the preset heating coefficient and each first ratio respectively to obtain the equipment heating value corresponding to each substation equipment.

[0185] Furthermore, the fourth analysis unit includes:

[0186] The weighting subunit is used to perform weighted calculations on the target offset, equipment surface corrosion and equipment heat generation corresponding to each substation equipment according to the preset equipment failure weights, so as to obtain the equipment failure degree corresponding to each substation equipment;

[0187] An evaluation subunit, used to determine whether the fault degree of each device is greater than a preset first fault 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 device failure degree is greater than the first failure threshold, determining whether the device failure degree is greater than a 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, determining whether the device failure degree is greater than a preset third failure threshold;

[0192] 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 equipment associated with the equipment failure degree;

[0193] 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 equipment associated with the equipment failure degree.

[0194] Furthermore, the abnormal conversion status includes maintenance to cold standby status, maintenance to hot standby status, cold standby to maintenance status, cold standby to hot standby status, hot standby to maintenance status, hot standby to cold standby status and equipment not operating.

[0195] See also Figure 6 , Figure 6 This 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 includes: a memory 401 and a processor 402, wherein the memory 402 stores a computer program; when the computer program is executed by the processor 402, the processor 402 executes a state monitoring method for substation equipment according to any 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 a program code 413 for executing any method step in the above method. For example, the storage space 403 for the program code may include individual program codes 413 for implementing the various steps in the above method, respectively. These program codes may be read from or written to one or more computer program products. These computer program products include program code carriers such as a hard disk, a compact disk (CD), a memory card or a floppy disk. The program code may be compressed, for example, in an appropriate form. When these codes are run by a computing and processing device, the computing and processing device is caused to execute the various steps in the above-described method.

[0198] Embodiment 5 of the present invention further provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the state monitoring method of the substation equipment as described in any of the above embodiments is implemented.

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

[0200] In the 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 only schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation. 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 mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

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

[0202] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[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 this 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, including several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media 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 the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for monitoring the status of a substation device, characterized in that: include: Obtaining inspection data of multiple substation equipment on the outgoing line interval, and performing operation status evaluation on each of the inspection data to obtain the interval status and status change value of the outgoing line interval; Determining whether the interval state is a preset abnormal conversion state; If the interval state is the abnormal conversion state, a fault analysis is performed on the state change value, the equipment type and inspection data of each substation equipment to obtain a state monitoring result corresponding to each substation equipment; If the interval state is not the abnormal conversion state, the state monitoring result corresponding to each of the substation equipment is determined as the equipment operating normally.

2. The state monitoring method of substation equipment according to claim 1, characterized in that: The inspection data includes first device data and second device data, and the step of evaluating the operation status of each of the inspection data to obtain the interval status and status change value of the outgoing line interval includes: Inputting each of the first device data and each of the second device data into a preset device state function respectively to obtain an initial device state value and a target device state value corresponding to the outgoing line interval; Calculating a first difference between the initial device state value and the target device state value, and taking an absolute value of the first difference as a state change value; Generate a corresponding target key using the initial device state value and the target device state value; The target key is used to retrieve a preset interval status key-value pair list to match the interval status corresponding to the outgoing line interval.

3. The state monitoring method of substation equipment according to claim 1, characterized in that: The step of performing fault analysis on the state change value, the equipment type and inspection data of each substation equipment to obtain the state monitoring result corresponding to each substation equipment includes: Determining whether the state change value is greater than a preset error threshold; If the state change value is less than or equal to the error threshold, the state monitoring result corresponding to each of the substation equipment is determined as the equipment operating normally; If the state change value is greater than the error threshold, the state monitoring result corresponding to each of the substation equipment is determined according to the equipment type and inspection data of each of the substation equipment.

4. The state monitoring method of substation equipment according to claim 3, characterized in that: 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 corrosion area. The step of determining the status monitoring result corresponding to each of the substation equipment according to the equipment type and the inspection data of each of the substation equipment includes: Determine respectively whether the equipment type of each substation equipment is a switch; If the device type is a switch, a preset initial offset is used as a target offset of the substation device; If the device type is not a switch, performing difference processing on the conductive rod length of the substation device and the effective distance value to obtain a second difference; Performing ratio processing on the second difference and the length of the conductive rod to obtain the target offset; Respectively performing ratio processing on the equipment corrosion area and equipment surface area corresponding to each of the substation equipment to obtain the equipment surface corrosion amount corresponding to each of the substation equipment; Evaluate the heat generation of the outdoor temperature and the equipment temperature increment corresponding to each of the substation equipment respectively, and obtain the equipment heat generation corresponding to each of the substation equipment; The target offset, the amount of equipment surface corrosion and the amount of equipment heat generated corresponding to each of the substation equipment are evaluated for equipment status, and the status monitoring results corresponding to each of the substation equipment are obtained.

5. The state monitoring method of substation equipment according to claim 4, characterized in that: The step of evaluating the heat generation of the outdoor temperature and the equipment temperature increment corresponding to each of the substation equipment to obtain the equipment heat generation corresponding to each of the substation equipment comprises: Respectively summing the outdoor temperature and the equipment temperature increment corresponding to each of the substation equipment to obtain a plurality of first sum values; Performing ratio processing on a preset device heating alarm threshold and each of the first sum values ​​respectively to obtain a plurality of first ratios; The preset heating coefficient and each of the first ratios are respectively subjected to difference processing to obtain the equipment heating value corresponding to each of the substation equipment.

6. The state monitoring method of substation equipment according to claim 4, characterized in that: The step of respectively evaluating the target offset, the surface corrosion amount and the heat generation of each substation equipment to obtain the status monitoring result corresponding to each substation equipment comprises: The target offset, the amount of equipment surface corrosion and the amount of equipment heat generated corresponding to each of the substation equipment are weightedly calculated according to the preset equipment failure weights to obtain the equipment failure degree corresponding to each of the substation equipment; Determining whether the failure degree of each of the devices is greater than a preset first failure threshold; If the equipment failure degree is less than or equal to the first failure threshold, a preset first warning value is used as a status monitoring result of the substation equipment associated with the equipment failure degree; If the device failure degree is greater than the first failure threshold, determining whether the device 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 equipment associated with the equipment failure degree; If the device failure degree is greater than the second failure threshold, determining whether the device 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 equipment associated with the equipment failure degree; If the equipment failure degree is greater than the third failure threshold, a preset fourth warning value is used as a status monitoring result of the substation equipment associated with the equipment failure degree.

7. The state monitoring method of substation equipment according to claim 1, characterized in that: The abnormal conversion states include maintenance to cold standby state, maintenance to hot standby state, cold standby to maintenance state, cold standby to hot standby state, hot standby to maintenance state, hot standby to cold standby state and equipment not operating.

8. A condition monitoring system for substation equipment, characterized in that: include: The acquisition module is used to obtain the inspection data of multiple substation equipment on the outgoing line interval, and to evaluate the operation status of each inspection data to obtain the interval status and status change value of the outgoing line interval; An analysis module, used for determining whether the interval state is a preset abnormal conversion state; A first monitoring module is used for, if the interval state is the abnormal conversion state, performing fault analysis on the state change value, the equipment type and inspection data of each of the substation equipment, and obtaining a state monitoring result corresponding to each of the substation equipment; The second monitoring module is used to determine the status monitoring result corresponding to each of the substation equipment as normal operation of the equipment if the interval status is not the abnormal conversion status.

9. An electronic device, characterized in that: It comprises a memory and a processor, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the processor executes the steps of the condition monitoring method of the substation equipment according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed, the condition monitoring method for substation equipment according to any one of claims 1 to 7 is implemented.

Images