A GIS partial discharge alarm method, device, equipment and storage medium

Abstract

The application provides a GIS partial discharge alarm method, device and equipment and a storage medium, wherein the method comprises the following steps: collecting a discharge amplitude and a discharge pulse number of a GIS discharge signal according to an initial sampling time interval; when it is determined that the discharge amplitude and the discharge pulse number meet a discharge requirement, recording as a discharge event, updating the initial sampling time interval according to the discharge amplitude and the discharge pulse number, and returning to execute the step of collecting the discharge amplitude and the discharge pulse number of the discharge signal according to the initial sampling time interval; and when the number of discharge events accumulates to a preset number threshold in a preset unit time period, an alarm signal is output, thereby improving the safety and reliability of GIS equipment operation.

Description

Technical Field

[0001] This invention relates to the field of electrical equipment safety management technology, and in particular to a GIS partial discharge alarm method, device, equipment and storage medium. Background Technology

[0002] GIS (Gas Insulated Substation) is the abbreviation for gas-insulated substation. In a gas-insulated substation, most of the electrical equipment is sealed in metal pipes, with SF6 gas used as the insulating medium. Partial discharge occurs only in localized areas of the insulating medium, a phenomenon known as partial discharge. Partial discharge is a manifestation of aging and deterioration of the insulating medium, and its development further accelerates this aging and deterioration, significantly impacting the safety of the electrical equipment.

[0003] To improve the operational reliability of electrical equipment, existing technologies employ online monitoring devices to monitor the internal discharge status of electrical equipment in real time. Specifically, sensors collect signal characteristics generated by partial discharge, and then upload the data to a backend host. The host analyzes the characteristics of the partial discharge, generates corresponding graphs for interpretation and display, and issues an alarm when the collected data meets preset alarm rules, thus achieving automatic, real-time, and continuous monitoring of partial discharge.

[0004] The aforementioned monitoring method collects data at fixed sampling intervals, records the number of discharges, and sets alarm rules to issue an alarm signal when the number of discharges reaches a preset threshold. However, this method, which relies on fixed sampling intervals for data collection and alarm judgment, can lead to situations where partial discharge has progressed to the point of equipment failure, but the host system has not yet sent an alarm signal. This is not conducive to providing early warning for sudden and rapidly developing partial discharges, and can easily cause equipment damage. Summary of the Invention

[0005] This invention provides a method, apparatus, device, and storage medium for GIS partial discharge alarm, which can improve the safety and reliability of GIS equipment operation.

[0006] This invention provides a partial discharge alarm method for GIS, comprising:

[0007] The discharge amplitude and number of discharge pulses of the GIS discharge signal are collected according to the initial sampling time interval;

[0008] When the discharge amplitude and the number of discharge pulses are determined to meet the discharge requirements, it is recorded as a discharge event;

[0009] The initial sampling time interval is updated based on the discharge amplitude and the number of discharge pulses, and the process returns to the step of acquiring the discharge amplitude and the number of discharge pulses of the discharge signal based on the initial sampling time interval.

[0010] Within a preset time period, when the cumulative number of discharge events reaches a preset threshold, an alarm signal is output.

[0011] Optionally, the method further includes:

[0012] When it is determined that the discharge amplitude and the number of discharge pulses do not meet the discharge requirements, the initial sampling time interval is replaced according to the first preset sampling time interval, and the process returns to the step of collecting the discharge amplitude and the number of discharge pulses of the discharge signal according to the initial sampling time interval.

[0013] Optionally, the step of updating the initial sampling time interval based on the discharge amplitude and the number of discharge pulses includes:

[0014] Get the number of samples at the current moment;

[0015] When the sampling count is determined to be 1, the preset initial discharge amplitude and the preset initial discharge pulse count are obtained.

[0016] Calculate the new sampling time interval based on the preset initial discharge amplitude, the preset initial number of discharge pulses, the discharge amplitude, the number of discharge pulses, and the initial sampling time interval;

[0017] Replace the initial sampling time interval with the new sampling time interval.

[0018] Optionally, after the step of obtaining the number of samples and before the step of replacing the initial sampling time interval with the new sampling time interval, the method further includes:

[0019] When it is determined that the number of samplings is not 1, the pre-discharge amplitude and the number of pre-discharge pulses obtained from the previous sampling are acquired.

[0020] The new sampling time interval is calculated based on the previous discharge amplitude, the number of previous discharge pulses, the discharge amplitude, the number of discharge pulses, and the initial sampling time interval.

[0021] Optionally, the method further includes:

[0022] When the discharge amplitude is determined to reach the discharge amplitude alarm threshold, an alarm signal is issued.

[0023] Optionally, the formula for calculating the new sampling time interval based on the preset initial discharge amplitude, the preset initial number of discharge pulses, the discharge amplitude, the number of discharge pulses, and the initial sampling time interval is as follows:

[0024]

[0025] Where t0 is the initial sampling time interval used in the first sampling, t1 is the new sampling time interval used in the second sampling, K0 is the preset initial number of discharge pulses, U0 is the preset initial discharge amplitude, U1 is the discharge amplitude obtained in the first sampling, and K1 is the number of discharge pulses obtained in the first sampling.

[0026] Optionally, the formula for calculating the new sampling time interval based on the previous discharge amplitude, the number of previous discharge pulses, the discharge amplitude, the number of discharge pulses, and the initial sampling time interval is as follows:

[0027]

[0028] Among them, t i-1 t represents the initial sampling time interval used in the current sampling. i K is the new sampling time interval to be used in the next sampling. i-1 U represents the number of pre-discharge pulses. i-1 U is the pre-discharge amplitude. i K represents the discharge amplitude obtained from the current sampling. i This represents the number of discharge pulses obtained from the current sampling.

[0029] The present invention also provides a GIS partial discharge alarm device, the device comprising:

[0030] The acquisition module is used to acquire the discharge amplitude and the number of discharge pulses of the discharge signal according to the initial sampling time interval;

[0031] The first recording unit is used to record a discharge event when it is determined that the discharge amplitude and the number of discharge pulses meet the discharge requirements.

[0032] The first update and loop module is used to update the initial sampling time interval according to the discharge amplitude and the number of discharge pulses, and return to the step of collecting the discharge amplitude and the number of discharge pulses of the discharge signal according to the initial sampling time interval;

[0033] The alarm module is used to output an alarm signal when the cumulative number of discharge events reaches a preset threshold within a preset unit time period.

[0034] The present invention also provides an electronic device, the device including a processor and a memory;

[0035] The memory is used to store program code and transmit the program code to the processor;

[0036] The processor is used to execute the method described above according to the instructions in the program code.

[0037] The present invention also provides a computer-readable storage medium for storing program code for performing the method described above.

[0038] As can be seen from the above technical solutions, the present invention has the following advantages:

[0039] This invention provides a partial discharge alarm method for GIS. It collects the discharge amplitude and number of discharge pulses of the GIS discharge signal based on an initial sampling time interval. When the discharge amplitude and number of discharge pulses meet the discharge requirements, it is recorded as a discharge event. The initial sampling time interval is updated based on the discharge amplitude and number of discharge pulses, and the process returns to the step of collecting the discharge amplitude and number of discharge pulses based on the initial sampling time interval. Within a preset unit time period, when the cumulative number of discharge events reaches a preset threshold, an alarm signal is output. In this embodiment, the impact of the discharge energy of partial discharge on the GIS equipment is considered. The sampling frequency can be dynamically adjusted according to the severity of the discharge, which is beneficial for quickly alarming sudden and rapidly developing partial discharges in a short time, providing more time for emergency handling of the equipment and improving the safety and reliability of GIS equipment operation. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a schematic flowchart of a GIS partial discharge alarm method provided in Embodiment 1 of the present invention;

[0042] Figure 2 This is a schematic flowchart of a GIS partial discharge alarm method provided in Embodiment 2 of the present invention;

[0043] Figure 3 This is a schematic diagram of a GIS partial discharge alarm device provided in Embodiment 3 of the present invention. Detailed Implementation

[0044] Online monitoring of partial discharge in GIS (Gas Insulation System) provides early warning of insulation defects by real-time monitoring of discharge signals. Partial discharge generated by the insulating medium excites ultra-high frequency (UHF) electromagnetic wave signals with frequencies between 300-1500 MHz, which propagate in the surrounding space. Current technology involves installing sensors at the non-metallic insulating base of the GIS to capture the signal characteristics of these UHF electromagnetic waves. Features such as discharge amplitude and the number of discharge pulses can be used to characterize partial discharge. Discharge amplitude reflects the intensity of the discharge; a higher discharge intensity indicates more energy released with each discharge, resulting in a larger amplitude. Under online monitoring conditions using the UHF method, the unit for discharge amplitude is dBm. The number of discharge pulses reflects the frequency of partial discharge; a higher number of pulses per unit time indicates more frequent discharges. The unit for the number of discharge pulses is pulses per second (p / second).

[0045] After detecting a partial discharge signal, the online monitoring device automatically issues an alarm based on the severity of the partial discharge. Specifically, an alarm rule is set in the host system. The sensor transmits the collected partial discharge signal characteristics to the host system. The host system determines whether the received partial discharge signal characteristics meet the alarm rule within a preset time. If so, the host system sends an alarm signal to the main system, alerting monitoring personnel to the device's condition.

[0046] Alarm rules involve discharge events and sampling time intervals. Generally, manufacturers of online partial discharge monitoring devices set thresholds for the discharge amplitude and the number of discharge pulses per unit time to determine discharge events. For example, in the absence of partial discharge, the signal amplitude received by the sensor should be less than -70 dBm, and the number of pulses should be 0. Assuming the threshold for discharge amplitude is set to -60 dBm and the threshold for the number of discharge pulses is 100 pulses / second, then when the signal amplitude received by the sensor exceeds -60 dBm and the number of pulses exceeds 100 within one second, the host system will record a discharge event.

[0047] The sampling interval refers to the time between two consecutive sensor signal acquisitions by the backend host. A shorter time allows for a higher sampling frequency. For example, if the sampling interval is set to 3 minutes per sampling, and the amplitude of the discharge signal received by the sensor exceeds -60 dBm in each sampling, and the number of discharge signal pulses exceeds 100 per second, then the backend host can record a maximum of 20 discharge events per hour. For instance, a manufacturer's partial discharge alarm rules are as follows: 1) Definition of a partial discharge event: A discharge event is defined as a situation where the discharge amplitude is greater than -60 dBm and the number of pulses exceeds 100 per second; 2) The backend host's sampling interval is 3 minutes per sampling. If the number of received discharge events exceeds 15 per hour, an alarm signal is sent. In the above example, the parameters for discharge amplitude threshold, discharge pulse number threshold, and sampling interval are all adjustable, and different brands and manufacturers may have different settings depending on product characteristics and GIS equipment specifications.

[0048] However, the insulation damage caused by partial discharge to GIS equipment depends mainly on the energy generated by the discharge. The more energy accumulates, the more severe the insulation damage. When the duration of the discharge pulse signal is extremely short, the larger the discharge amplitude, the greater the energy released in a single discharge. If the partial discharge develops rapidly, in addition to the increase in discharge amplitude, the number of discharges in the same time period will also increase. Using the above example, in the initial stage of partial discharge in GIS equipment, the discharge amplitude is slightly greater than -60 dBm, and the number of discharge pulses exceeds 100 per second. The host records the first discharge event. Subsequently, the partial discharge develops rapidly within a short period. After 3 minutes, the discharge amplitude reaches -50 dBm, and the number of discharge pulses reaches 200. The host records the second discharge event. Afterward, the intensity of the partial discharge continuously increases, and the host records one discharge event in each sampling period. At the sampling time of the 30th minute, the discharge amplitude and the number of discharge pulses have reached high values. At this point, the energy released by the partial discharge inside the GIS equipment may have caused insulation breakdown and equipment tripping. However, the host only records 10 discharge events, which does not meet the alarm rule of receiving more than 15 discharge events per hour, and therefore cannot send an alarm signal. It is evident that existing monitoring methods, which sample data at fixed sampling intervals, are prone to failing to provide timely warnings when faced with rapidly developing partial discharges. This can lead to situations where the partial discharge has progressed to a state of equipment failure, but the host still has not sent an alarm signal, creating operational risks for the GIS equipment.

[0049] This invention provides a method, apparatus, device, and storage medium for GIS partial discharge alarm, which can improve the safety and reliability of GIS equipment operation.

[0050] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0051] Please see Figure 1 , Figure 1 This is a schematic diagram of a GIS partial discharge alarm method provided in Embodiment 1 of the present invention.

[0052] This embodiment provides a partial discharge alarm method for GIS, including:

[0053] 101. Collect the discharge amplitude and number of discharge pulses of the GIS discharge signal according to the initial sampling time interval.

[0054] When a discharge signal is detected, the backend host collects the discharge amplitude and discharge pulse signal of the GIS discharge signal from the sensor according to the initial sampling time interval.

[0055] Understandably, when starting the first sampling, the initial sampling time interval can be set according to actual needs, or it can be set with reference to the parameters provided by the monitoring equipment manufacturer.

[0056] 102. When the discharge amplitude and the number of discharge pulses are determined to meet the discharge requirements, it is recorded as a discharge event.

[0057] The discharge requirement refers to the discharge amplitude being greater than or equal to the preset discharge amplitude threshold and the number of discharge pulses being greater than or equal to the preset discharge pulse number threshold.

[0058] In this embodiment, the backend host determines whether the discharge amplitude is greater than or equal to a preset discharge amplitude threshold and whether the number of discharge pulses is greater than a preset discharge pulse number threshold. If both are true, it is recorded as a discharge event, indicating that the GIS has generated a relatively serious discharge.

[0059] 103. Update the initial sampling time interval based on the discharge amplitude and the number of discharge pulses, and return to the step of collecting the discharge amplitude and the number of discharge pulses of the discharge signal based on the initial sampling time interval.

[0060] After recording a discharge event, the initial sampling time interval is updated based on the discharge amplitude and the number of discharge pulses. The process then returns to step 101 with the updated initial sampling time interval. In step 101, the discharge amplitude and the number of discharge pulses are collected using the updated initial sampling time interval. If the discharge amplitude and the number of discharge pulses meet the discharge requirements, steps 102-103 are executed to adjust the initial sampling time interval again. This process is repeated cyclically.

[0061] The insulation damage caused by partial discharge to GIS equipment depends primarily on the energy generated by the discharge. The more energy accumulated, the more severe the insulation damage. When the discharge pulse signal duration is extremely short, the energy Q released in a single discharge is proportional to the square of the discharge amplitude U, i.e., Q∝U. 2 If partial discharge develops rapidly, in addition to the increase in discharge amplitude, the number of discharges within the same time period will also increase (i.e., the number of discharge pulses will increase). Therefore, the total energy Q released by the discharge within the same time period will increase. 总 Proportional to the number of pulses K and the energy Q released in a single discharge, i.e., Q 总 ∝KU.

[0062] This embodiment updates the initial sampling time based on the sampled discharge amplitude and the number of discharge pulses, taking into account the impact of partial discharge energy on GIS equipment. It can dynamically adjust the sampling frequency according to the severity of the discharge, which is beneficial for quickly alarming sudden and rapidly developing partial discharges in a short period of time, providing more time for emergency handling of the equipment.

[0063] 104. When the cumulative number of discharge events reaches a preset threshold within a preset time period, an alarm signal will be output.

[0064] During the sampling process, the backend host accumulates the number of discharge events in real time. When the number of discharge events reaches the preset threshold within a preset time period, it indicates that the discharge level is already quite serious and staff need to be alerted in time for handling.

[0065] The preset unit time period and preset number threshold can be determined according to the actual situation. For example, the preset unit time period can be 1 hour or other, and the preset number threshold can be 15 times. This application does not make specific limitations here.

[0066] This embodiment provides a partial discharge alarm method for GIS. It collects the discharge amplitude and number of discharge pulses of the GIS discharge signal based on an initial sampling time interval. When the discharge amplitude and number of discharge pulses meet the discharge requirements, it is recorded as a discharge event. The initial sampling time interval is updated based on the discharge amplitude and number of discharge pulses, and the process returns to the step of collecting the discharge amplitude and number of discharge pulses based on the initial sampling time interval. Within a preset unit time period, when the cumulative number of discharge events reaches a preset threshold, an alarm signal is output. This embodiment considers the impact of partial discharge energy on GIS equipment and can dynamically adjust the sampling frequency according to the severity of the discharge. This facilitates rapid alarm for sudden and rapidly developing partial discharges within a short time, providing more time for emergency handling of the equipment. This improves the safety and reliability of GIS equipment operation.

[0067] Please see Figure 2 , Figure 2 This is a schematic diagram of a GIS partial discharge alarm method provided in Embodiment 2 of the present invention.

[0068] This second embodiment provides a GIS partial discharge alarm method, including:

[0069] 201. Collect the discharge amplitude and number of discharge pulses of the GIS discharge signal according to the initial sampling time interval;

[0070] Refer to step 101; it will not be repeated here.

[0071] In another preferred embodiment, the background host can monitor the discharge amplitude and the number of discharge pulses of the discharge signal in real time. When the discharge amplitude is greater than the discharge amplitude set value and the number of discharge pulses is greater than the discharge pulse number set value, sampling is started; otherwise, sampling is not started.

[0072] 202. When the discharge amplitude and the number of discharge pulses are determined to meet the discharge requirements, it is recorded as a discharge event.

[0073] Refer to step 102; it will not be repeated here.

[0074] 203. Update the initial sampling time interval based on the discharge amplitude and the number of discharge pulses, and return to the step of collecting the discharge amplitude and the number of discharge pulses of the discharge signal based on the initial sampling time interval.

[0075] It should be noted that step 203 also includes the following sub-steps:

[0076] S1: Get the number of samples at the current moment.

[0077] The current time refers to the time when the discharge amplitude and the number of discharge pulses were acquired in step 201. The number of samples is obtained, and it is determined whether the number of samples is 1.

[0078] S2: When the number of samplings is determined to be 1, obtain the preset initial discharge amplitude and the preset initial discharge pulse count; and calculate the new sampling time interval based on the preset initial discharge amplitude, the preset initial discharge pulse count, the discharge amplitude, the discharge pulse count, and the initial sampling time interval.

[0079] The formula for calculating the new sampling time interval is:

[0080]

[0081] Where t0 is the initial sampling time interval used in the first sampling, t1 is the new sampling time interval used in the second sampling, K0 is the preset initial number of discharge pulses, U0 is the preset initial discharge amplitude, U1 is the discharge amplitude obtained in the first sampling, and K1 is the number of discharge pulses obtained in the first sampling.

[0082] It should be noted that when the number of samplings is 1, the initial sampling time interval is a preset value. In this embodiment, sampling is performed according to the preset initial sampling time interval. When the obtained discharge amplitude U1 is greater than or equal to the preset discharge amplitude threshold and the number of discharge pulses K1 is greater than or equal to the preset number of discharge pulses threshold, the initial time interval is adjusted and updated according to formula (1) to obtain a new sampling time interval. The next sampling is performed according to the new sampling time interval.

[0083] The specific values ​​of K0 and U0 can be the same as the preset discharge amplitude threshold and the preset discharge pulse number threshold, respectively, or they can be other values. The specific values ​​can be determined according to the actual situation. This embodiment does not make specific limitations here.

[0084] S3: When the number of samplings is not 1, obtain the previous discharge amplitude and the number of previous discharge pulses obtained from the previous sampling; calculate the new sampling time interval based on the previous discharge amplitude, the number of previous discharge pulses, the discharge amplitude, the number of discharge pulses and the initial sampling time interval.

[0085] The specific calculation formula is as follows:

[0086]

[0087] Among them, t i-1 t represents the initial sampling time interval used in the current sampling. i K is the new sampling time interval to be used in the next sampling. i-1 U represents the number of pre-discharge pulses. i-1 U is the pre-discharge amplitude. iK represents the discharge amplitude obtained from the current sampling. i This represents the number of discharge pulses obtained from the current sampling.

[0088] It should be noted that when the number of samplings is not 1, the previous discharge amplitude and the number of previous discharge pulses obtained from the previous sampling are obtained. This is then combined with the discharge amplitude and the number of discharge pulses obtained from the current sampling, as well as the initial sampling time interval used in the current sampling, to adjust the next sampling time interval.

[0089] For example, if the current sampling time is the third time, then the sampling time interval is t2. Step 201 involves collecting the discharge amplitude and number of discharge pulses of the GIS discharge signal at the current time according to t2. Assuming that the discharge amplitude and number of discharge pulses of the discharge signal both meet the discharge requirements, then the sampling time interval for the fourth sampling calculated according to formula (2) is t3. Data is collected according to the sampling time interval t3 during the fourth sampling.

[0090] S4: Replace the initial sampling time interval with the new sampling time interval.

[0091] After obtaining the new sampling time interval, the new sampling time interval is used to replace the initial sampling time interval, thus updating the initial sampling time interval.

[0092] 204. When it is determined that the discharge amplitude and the number of discharge pulses do not meet the discharge requirements, the initial sampling time interval is replaced according to the first preset sampling time interval, and the process returns to the step of collecting the discharge amplitude and the number of discharge pulses of the discharge signal according to the initial sampling time interval.

[0093] When the discharge amplitude is less than the preset discharge amplitude threshold, or the number of discharge pulses is less than the preset discharge pulse number threshold, it indicates that the discharge requirements are not met. The initial sampling time interval is replaced according to the first preset sampling time interval. Then, the discharge amplitude and the number of discharge pulses are collected at the first preset sampling time interval. The discharge amplitude and the number of discharge pulses are re-determined to see if the collected discharge amplitude and the number of discharge pulses meet the discharge requirements. If yes, then steps 202-203 are executed; if no, then step 204 is executed.

[0094] It should be noted that the first preset sampling time interval is a fixed value. Its specific value can be the same as the initial sampling time interval of the first sampling, or it can be set to other values. The specific value can be determined according to the actual situation. This application does not make specific limitations here. For example, it can be 3 minutes / time, etc.

[0095] 205. When the cumulative number of discharge events reaches a preset threshold within a preset time period, an alarm signal is output.

[0096] It should be noted that after the alarm signal is output, the number of discharge events is reset to zero and then re-accumulated in the next unit time period.

[0097] In this embodiment, as the discharge progresses and the discharge amplitude and number of discharge pulses increase, the sampling time interval of the backend host dynamically decreases. This embodiment can collect discharge information of the discharge signal in a timely manner, meet alarm requirements more quickly, and is beneficial for rapid early warning of sudden and rapidly developing partial discharges, improving the timeliness of early warning and the reliability of GIS equipment. Meanwhile, in this embodiment, when the discharge amplitude and number of discharge pulses do not meet the discharge requirements, the sampling time interval is adjusted to a first preset sampling time interval. While maintaining attention to the discharge signal, data is collected with a shorter sampling time interval, avoiding the collection of a large amount of data under normal GIS equipment conditions, which would consume a large amount of storage and computing resources of the backend host and cause unnecessary resource waste.

[0098] In another preferred embodiment, step 205 further includes:

[0099] 206. When the discharge amplitude is determined to reach the discharge amplitude alarm threshold, an alarm signal is issued.

[0100] When the discharge amplitude reaches the discharge amplitude alarm threshold, it indicates that the discharge signal has already caused serious defects to the equipment, and an alarm signal needs to be sent immediately to remind maintenance personnel to handle it in a timely manner.

[0101] Please see Figure 3 , Figure 3 This is a schematic diagram of a GIS partial discharge alarm device provided in Embodiment 3 of the present invention.

[0102] This third embodiment provides a GIS partial discharge alarm device, including:

[0103] The acquisition module 301 is used to acquire the discharge amplitude and the number of discharge pulses of the discharge signal according to the initial sampling time interval;

[0104] The first recording unit 302 is used to record a discharge event when the discharge amplitude and the number of discharge pulses meet the discharge requirements.

[0105] The first update and loop module 303 is used to update the initial sampling time interval according to the discharge amplitude and the number of discharge pulses, and return to the step of collecting the discharge amplitude and the number of discharge pulses of the discharge signal according to the initial sampling time interval;

[0106] The first alarm module 304 is used to output an alarm signal when the cumulative number of discharge events reaches a preset threshold within a preset unit time period.

[0107] Furthermore, the apparatus provided in this embodiment also includes:

[0108] The replacement and loop module 305 is used to replace the initial sampling time interval according to the first preset sampling time interval when it is determined that the discharge amplitude and the number of discharge pulses do not meet the discharge requirements, and return to the step of collecting the discharge amplitude and the number of discharge pulses of the discharge signal according to the initial sampling time interval.

[0109] Furthermore, the first update and loop module 303 includes:

[0110] The update submodule is used to update the initial sampling time interval based on the discharge amplitude and the number of discharge pulses.

[0111] The first loop submodule is used to return to the step of collecting the discharge amplitude and the number of discharge pulses of the discharge signal based on the initial sampling time interval.

[0112] Furthermore, updating the submodules includes:

[0113] The acquisition unit is used to acquire the number of samples at the current moment;

[0114] The first determination and acquisition unit is used to acquire the preset initial discharge amplitude and the preset initial discharge pulse number when the number of determination sampling is 1.

[0115] The first calculation unit is used to calculate the new sampling time interval based on the preset initial discharge amplitude, the preset initial number of discharge pulses, the discharge amplitude, the number of discharge pulses, and the initial sampling time interval;

[0116] The second determination and acquisition unit is used to acquire the pre-discharge amplitude and the number of pre-discharge pulses obtained from the previous sampling when the determination sampling number is not 1.

[0117] The second calculation unit is used to calculate the new sampling time interval based on the previous discharge amplitude, the number of previous discharge pulses, the discharge amplitude, the number of discharge pulses, and the initial sampling time interval;

[0118] Replacement sub-unit, used to replace the initial sampling time interval with the new sampling time interval.

[0119] Furthermore, the apparatus provided in this embodiment also includes:

[0120] The second alarm module is used to issue an alarm signal when the discharge amplitude is determined to reach the discharge amplitude alarm threshold.

[0121] The present invention also provides an electronic device, the device including a processor and a memory:

[0122] The memory is used to store program code and transfer the program code to the processor;

[0123] The processor is used to execute the methods described above according to the instructions in the program code.

[0124] The present invention also provides a computer-readable storage medium for storing program code for executing the methods described above.

[0125] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0126] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, or indirect coupling or communication connection between apparatuses or units, and may be electrical, mechanical, or other forms.

[0127] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0128] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0129] If the integrated unit is implemented as 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. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0130] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A GIS partial discharge warning method, characterized by, The method comprises the following steps: acquiring the discharge amplitude and the discharge pulse number of the GIS discharge signal according to an initial sampling time interval; when it is determined that the discharge amplitude and the discharge pulse number meet the discharge requirement, recording as a discharge event; updating the initial sampling time interval according to the discharge amplitude and the discharge pulse number, and returning to the step of acquiring the discharge amplitude and the discharge pulse number of the GIS discharge signal according to the initial sampling time interval; when the number of the discharge events accumulatively reaches a preset number threshold within a preset unit time period, outputting an alarm signal; the step of updating the initial sampling time interval according to the discharge amplitude and the discharge pulse number comprises the following steps: acquiring the sampling number at the current time; when it is determined that the sampling number is 1, acquiring a preset initial discharge amplitude and a preset initial discharge pulse number; calculating a new sampling time interval according to the preset initial discharge amplitude, the preset initial discharge pulse number, the discharge amplitude, the discharge pulse number and the initial sampling time interval; replacing the initial sampling time interval with the new sampling time interval; after the step of acquiring the sampling number and before the step of replacing the initial sampling time interval with the new sampling time interval, the method further comprises the following steps: when it is determined that the sampling number is not 1, acquiring a previous discharge amplitude and a previous discharge pulse number obtained by the last sampling; calculating a new sampling time interval according to the previous discharge amplitude, the previous discharge pulse number, the discharge amplitude, the discharge pulse number and the initial sampling time interval; the calculation formula of the new sampling time interval according to the preset initial discharge amplitude, the preset initial discharge pulse number, the discharge amplitude, the discharge pulse number and the initial sampling time interval is as follows: ； wherein, t0 is the initial sampling time interval used in the first sampling, t1 is the new sampling time interval used in the second sampling, K0 is the preset initial discharge pulse number, U0 is the preset initial discharge amplitude, U1 is the discharge amplitude obtained in the first sampling, and K1 is the discharge pulse number obtained in the first sampling; the calculation formula of the new sampling time interval according to the previous discharge amplitude, the previous discharge pulse number, the discharge amplitude, the discharge pulse number and the initial sampling time interval is as follows: ； wherein t i-1 is the initial sampling time interval used at the current sampling, t i is the new sampling time interval used at the next sampling, K i-1 is the number of previous discharge pulses, U i-1 is the amplitude of previous discharge, U i is the discharge amplitude obtained at the current sampling, K i is the number of discharge pulses obtained at the current sampling.

2. The method of claim 1, wherein, the method further comprises the following steps: when it is determined that the discharge amplitude and the discharge pulse number do not meet the discharge requirement, replacing the initial sampling time interval with a first preset sampling time interval, and returning to the step of acquiring the discharge amplitude and the discharge pulse number of the GIS discharge signal according to the initial sampling time interval.

3. The method of claim 1, wherein, the method further comprises the following steps: when it is determined that the discharge amplitude reaches a discharge amplitude alarm threshold, outputting an alarm signal.

4. A GIS partial discharge warning device, characterized by, The device comprises: a collecting module, configured to acquire the discharge amplitude and the discharge pulse number of the GIS discharge signal according to an initial sampling time interval; a first recording unit, configured to record as a discharge event when it is determined that the discharge amplitude and the discharge pulse number meet the discharge requirement; a first updating and circulating module, configured to update the initial sampling time interval according to the discharge amplitude and the discharge pulse number, and return to execute the step of collecting the discharge amplitude and the discharge pulse number of the discharge signal according to the initial sampling time interval; an alarm module, configured to output an alarm signal when the number of the discharge events accumulates to a preset number threshold in a preset unit time period; the first updating and circulating module comprises: an acquisition unit, configured to acquire a sampling number at a current time; a first determining and acquiring unit, configured to acquire a preset initial discharge amplitude and a preset initial discharge pulse number when determining that the sampling number is 1; a first calculating unit, configured to calculate a new sampling time interval according to the preset initial discharge amplitude, the preset initial discharge pulse number, the discharge amplitude, the discharge pulse number and the initial sampling time interval; a second determining and acquiring unit, configured to acquire a previous discharge amplitude and a previous discharge pulse number obtained by previous sampling when determining that the sampling number is not 1; a second calculating unit, configured to calculate a new sampling time interval according to the previous discharge amplitude, the previous discharge pulse number, the discharge amplitude, the discharge pulse number and the initial sampling time interval; a replacing subunit, configured to replace the initial sampling time interval with the new sampling time interval; wherein, the calculation formula of the new sampling time interval according to the preset initial discharge amplitude, the preset initial discharge pulse number, the discharge amplitude, the discharge pulse number and the initial sampling time interval is: ； wherein, t0 is the initial sampling time interval used in the first sampling, t1 is the new sampling time interval used in the second sampling, K0 is the preset initial discharge pulse number, U0 is the preset initial discharge amplitude, U1 is the discharge amplitude obtained by the first sampling, and K1 is the discharge pulse number obtained by the first sampling; the calculation formula of the new sampling time interval according to the previous discharge amplitude, the previous discharge pulse number, the discharge amplitude, the discharge pulse number and the initial sampling time interval is: ； wherein t i-1 is the initial sampling time interval used at the current sampling, t i is the new sampling time interval used at the next sampling, K i-1 is the number of previous discharge pulses, U i-1 is the amplitude of previous discharge pulses, U i is the discharge amplitude obtained at the current sampling, K i is the number of discharge pulses obtained at the current sampling.

5. An electronic device, comprising: the device comprises a processor and a memory; the memory is configured to store program code and transmit the program code to the processor; the processor is configured to execute the method according to any one of claims 1-3 according to the instructions in the program code.

6. A computer-readable storage medium, characterized in that, the computer readable storage medium is configured to store program code, and the program code is configured to execute the method according to any one of claims 1-3.

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