Method, device and equipment for monitoring partial discharge state of current collection line and storage medium

Abstract

The invention is suitable for the technical field of line monitoring, and provides a current collection line partial discharge state monitoring method, device and equipment and a storage medium, and the method comprises the steps: sequentially obtaining the data of high-frequency partial discharge sensors which are arranged in an array, and obtaining a to-be-detected real-time high-frequency pulse current set and a historical high-frequency pulse current set; determining a high-frequency pulse current fluctuation set based on the historical high-frequency pulse current set and the to-be-detected real-time high-frequency pulse current set; and based on the high-frequency pulse current fluctuation set, determining whether the target current collection line has a partial discharge state. According to the invention, the problem of partial discharge in the current collection line can be found in time.

Description

Technical Field

[0001] The present application belongs to the field of line monitoring technology, and in particular, relates to a method, device, equipment and storage medium for monitoring the partial discharge state of a collector line. Background Art

[0002] At present, the partial discharge status monitoring methods of collector lines mainly rely on advanced sensor technology and data analysis algorithms to achieve real-time monitoring of line status and fault warning. These methods capture weak discharge signals through highly sensitive sensors and use complex algorithms to analyze and process the signals to accurately judge the health of the line. In addition, the monitoring system can also combine historical data and environmental factors to conduct trend analysis and prediction, providing strong guarantees for the stable operation of the power system. Through these technical means, power maintenance personnel can promptly discover potential fault points, take preventive measures, avoid large-scale power outages, and ensure power supply safety and efficiency.

[0003] For instantaneous partial discharge phenomena, if the abnormality cannot be quickly identified, it will cause damage to the line. In existing monitoring methods, the complexity of many algorithms directly affects the real-time judgment, and these methods still have limitations in terms of real-time performance. Therefore, real-time identification of abnormalities is particularly critical, which is directly related to whether partial discharge problems in collector lines can be discovered and located in a timely manner. Summary of the invention

[0004] The embodiments of the present application provide a method, device, equipment and storage medium for monitoring the partial discharge state of a collector line to solve the problem that the partial discharge state monitoring technology has limitations in terms of real-time performance.

[0005] This application is implemented through the following technical solutions:

[0006] In a first aspect, an embodiment of the present application provides a method for monitoring the partial discharge state of a collector line, wherein a high-frequency partial discharge sensor arranged in an array is provided on the target collector line, and the method comprises:

[0007] The data of the high-frequency partial discharge sensors arranged in an array are acquired in sequence to obtain a real-time high-frequency pulse current set to be detected and a historical high-frequency pulse current set.

[0008] Based on the historical high-frequency pulse current set and the real-time high-frequency pulse current set to be detected, a high-frequency pulse current fluctuation set is determined.

[0009] Based on the high-frequency pulse current fluctuation set, determine whether the target collector line has a partial discharge state.

[0010] In combination with the first aspect, in some possible implementations, determining a high-frequency pulse current fluctuation set based on a historical high-frequency pulse current set and a real-time high-frequency pulse current set to be detected includes:

[0011] Based on the historical high-frequency pulse current set, a first target high-frequency pulse current set is determined; wherein the first target high-frequency pulse current set represents a set of high-frequency pulse current peak values ​​of each high-frequency partial discharge sensor when the line is normal.

[0012] Based on the real-time high-frequency pulse current set to be detected and the first target high-frequency pulse current set, a high-frequency pulse current fluctuation set is determined.

[0013] In combination with the first aspect, in some possible implementations, determining a first target high-frequency pulse current set based on a historical high-frequency pulse current set includes:

[0014] The first target high-frequency pulse current set is calculated using the first formula.

[0015] The first formula is:

[0016]

[0017] Among them, a ij represents the peak value of the high-frequency pulse current in the i-th column and the j-th row in the first target high-frequency pulse current set, M represents the number of historical high-frequency pulse current sets, (b ij ) m Represents the peak value of the high-frequency pulse current in the i-th column and the j-th row in the m-th historical high-frequency pulse current set.

[0018] In combination with the first aspect, in some possible implementations, determining a high-frequency pulse current fluctuation set based on the real-time high-frequency pulse current set to be detected and the first target high-frequency pulse current set includes:

[0019] The difference between the real-time high-frequency pulse current set to be detected and the first target high-frequency pulse current set is calculated to obtain a high-frequency pulse current fluctuation set.

[0020] In combination with the first aspect, in some possible implementations, determining whether a target collector line is in a partial discharge state based on a set of high-frequency pulse current fluctuations includes:

[0021] The high-frequency pulse current peak value variance is calculated based on the high-frequency pulse current peak value data in the high-frequency pulse current fluctuation set.

[0022] If the high-frequency pulse current peak value variance is greater than or equal to the first preset threshold, it is determined that a partial discharge state occurs in the target collector circuit.

[0023] If the high-frequency pulse current peak variance is less than the first preset threshold, it is determined that the target collector circuit does not have a partial discharge state.

[0024] In combination with the first aspect, in some possible implementations, the method further includes:

[0025] Based on the high-frequency pulse current fluctuation set, multiple high-frequency pulse current peak change rates are calculated.

[0026] The location of partial discharge is determined based on multiple high-frequency pulse current peak change rates.

[0027] In combination with the first aspect, in some possible implementations, determining the location of the partial discharge based on multiple high-frequency pulse current peak change rates includes:

[0028] The second formula is used to calculate the high-frequency pulse current peak value change rate of two adjacent high-frequency pulse current peak values, and each high-frequency pulse current peak value change rate is labeled.

[0029] For each high-frequency pulse current peak change rate, the two high-frequency partial discharge sensors corresponding to the high-frequency pulse current peak change rate are determined according to the label of the high-frequency pulse current peak change rate. If the high-frequency pulse current peak change rate is greater than the second preset threshold, the pulse numbers of the two high-frequency partial discharge sensors corresponding to the high-frequency pulse current peak change rate are extracted. If the difference between the two pulse numbers is greater than the third preset threshold, local discharge exists between the two high-frequency partial discharge sensors corresponding to the high-frequency pulse current change rate.

[0030] If the difference between the two pulse times is less than or equal to the third preset threshold, there is no partial discharge between the two high-frequency partial discharge sensors corresponding to the high-frequency pulse current peak change rate.

[0031] If the high-frequency pulse current peak value change rate is less than or equal to the second preset threshold, there is no partial discharge between the two high-frequency partial discharge sensors corresponding to the high-frequency pulse current peak value change rate.

[0032] The second formula is:

[0033]

[0034] Among them, C i，i+1 represents the peak change rate of the high-frequency pulse current between the i-th high-frequency partial discharge sensor and the i+1-th high-frequency partial discharge sensor, d i represents the peak value of the high-frequency pulse current collected by the i-th high-frequency partial discharge sensor, d i+1 Represents the peak value of the high-frequency pulse current collected by the i+1th high-frequency partial discharge sensor.

[0035] In a second aspect, an embodiment of the present application provides a collector line partial discharge state monitoring device, comprising:

[0036] The data acquisition module is used to sequentially acquire data from high-frequency partial discharge sensors arranged in an array to obtain a real-time high-frequency pulse current set to be detected and a historical high-frequency pulse current set.

[0037] The data calculation module is used to determine the high-frequency pulse current fluctuation set based on the historical high-frequency pulse current set and the real-time high-frequency pulse current set to be detected.

[0038] The state monitoring module is used to determine whether a partial discharge state occurs in the target collector circuit based on a collection of high-frequency pulse current fluctuations.

[0039] In a third aspect, an embodiment of the present application provides a terminal device, including: a processor and a memory, the memory is used to store a computer program, and when the processor executes the computer program, it implements the method for monitoring the partial discharge status of a collector line as described in any one of the first aspects.

[0040] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method for monitoring the partial discharge state of a collector line as described in any one of the first aspects is implemented.

[0041] It can be understood that the beneficial effects of the second to fourth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here.

[0042] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0043] This application determines a high-frequency pulse current fluctuation data set by analyzing historical high-frequency pulse current data sets and real-time high-frequency pulse current data sets to be detected. Using this data set, it is possible to directly determine whether a partial discharge phenomenon has occurred. If a partial discharge state is detected, the specific location of the problem can be further located based on the high-frequency pulse current fluctuation data set. Since this process does not involve complex algorithms, it is possible to provide monitoring results in real time, and timely discover and accurately locate partial discharge phenomena in the collector line.

[0044] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0046] Figure 1 It is a flow chart of a method for monitoring partial discharge status of a collector line provided in one embodiment of the present application;

[0047] Figure 2 It is a structural schematic diagram of a collector line partial discharge state monitoring device provided in one embodiment of the present application;

[0048] Figure 3 It is a structural diagram of a terminal device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0049] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0050] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0051] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0052] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0053] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0054] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0055] The present application provides a method for monitoring partial discharge status of a collector line. Figure 1 is a schematic diagram of the process of the partial discharge state monitoring method of the collector line provided in an embodiment of the present application, referring to Figure 1 , the detailed description of the partial discharge state monitoring method of the collector line is as follows:

[0056] Step 101 , sequentially acquiring data from high-frequency partial discharge sensors arranged in an array, and obtaining a real-time high-frequency pulse current set to be detected and a historical high-frequency pulse current set.

[0057] Exemplarily, the monitored target collection circuit is provided with high-frequency partial discharge sensors arranged in an array. If the collection circuit is a single circuit, the number of rows of the high-frequency partial discharge sensors arranged in the array is 1; if the collection circuit is 2, the number of rows of the high-frequency partial discharge sensors arranged in the array is 2.

[0058] Exemplarily, the real-time high-frequency pulse current set to be detected is the high-frequency pulse current peak value collection value of each high-frequency partial discharge sensor collected sequentially from one end to the other end of the collector line. The historical high-frequency pulse current set is similar to the real-time high-frequency pulse current set to be detected, but there are differences in data. For example, the high-frequency pulse current peak value of the i-th column and j-th row in the historical high-frequency pulse current set is the same as the high-frequency partial discharge sensor corresponding to the high-frequency pulse current peak value of the i-th column and j-th row in the real-time high-frequency pulse current set to be detected.

[0059] Exemplarily, the high-frequency partial discharge sensors arranged in an array may be Rogowski coils, current probes, Hall effect sensors, dedicated high-frequency current sensors, and the like.

[0060] Exemplarily, the frequency range of the high-frequency pulse current is 100 KHz to 30 MHz.

[0061] Exemplarily, the raw data corresponding to the real-time high-frequency pulse current set to be detected is preprocessed by wavelet transform and other algorithms to remove white noise in the raw data, reduce interference, and further improve the accuracy of the detection results.

[0062] Step 102: determining a high-frequency pulse current fluctuation set based on a historical high-frequency pulse current set and a real-time high-frequency pulse current set to be detected.

[0063] Exemplarily, step 102 may include:

[0064] Based on the historical high-frequency pulse current set, a first target high-frequency pulse current set is determined; wherein the first target high-frequency pulse current set represents a set of high-frequency pulse current averages of each high-frequency partial discharge sensor when the line is normal.

[0065] Based on the real-time high-frequency pulse current set to be detected and the first target high-frequency pulse current set, a high-frequency pulse current fluctuation set is determined.

[0066] Exemplarily, the historical high-frequency pulse current set is a high-frequency pulse current peak data set when the collector line has no faults.

[0067] Exemplarily, determining the first target high-frequency pulse current set based on the historical high-frequency pulse current set may include:

[0068] The first target high-frequency pulse current set is calculated using the first formula.

[0069] The first formula can be:

[0070]

[0071] Among them, a ij represents the peak value of the high-frequency pulse current in the i-th column and the j-th row in the first target high-frequency pulse current set, M represents the number of historical high-frequency pulse current sets, (b ij ) m Represents the peak value of the high-frequency pulse current in the i-th column and the j-th row in the m-th historical high-frequency pulse current set.

[0072] For example, in order to more accurately evaluate whether a target collector circuit is in a partial discharge state, it is necessary to accurately evaluate the target collector circuit in combination with its historical working state, and thus it is necessary to obtain a first target high-frequency pulse current set.

[0073] Exemplarily, determining a high-frequency pulse current fluctuation set based on the real-time high-frequency pulse current set to be detected and the first target high-frequency pulse current set includes:

[0074] The difference between the real-time high-frequency pulse current set to be detected and the first target high-frequency pulse current set is calculated to obtain a high-frequency pulse current fluctuation set.

[0075] Exemplarily, after the high-frequency pulse current fluctuation set is calculated, the fluctuation of the high-frequency pulse current peak value relative to the high-frequency pulse current peak value in the historical normal working state can be determined more intuitively.

[0076] Step 103: Determine whether a partial discharge state occurs in the target collector circuit based on the high-frequency pulse current fluctuation set.

[0077] Exemplarily, step 103 may include:

[0078] The high-frequency pulse current peak value variance is calculated based on the high-frequency pulse current peak value data in the high-frequency pulse current fluctuation set.

[0079] If the high-frequency pulse current peak value variance is greater than or equal to the first preset threshold, it is determined that a partial discharge state occurs in the target collector circuit.

[0080] If the high-frequency pulse current peak variance is less than the first preset threshold, it is determined that the target collector circuit does not have a partial discharge state.

[0081] For example, the fluctuation degree of each data point in the high-frequency pulse current fluctuation set can be evaluated by the high-frequency pulse current peak variance. When the fluctuation degree is significant, it usually indicates that there is abnormal fluctuation in the high-frequency pulse current peak, and this fluctuation is likely to be caused by partial discharge.

[0082] Exemplarily, the method may further include:

[0083] Based on the high-frequency pulse current fluctuation set, multiple high-frequency pulse current peak change rates are calculated.

[0084] The location of partial discharge is determined based on multiple high-frequency pulse current peak change rates.

[0085] Exemplarily, determining the location of the partial discharge based on multiple high-frequency pulse current peak change rates may include:

[0086] The second formula is used to calculate the high-frequency pulse current peak value change rate of two adjacent high-frequency pulse current peak values, and each high-frequency pulse current peak value change rate is labeled.

[0087] For each high-frequency pulse current peak change rate, the two high-frequency partial discharge sensors corresponding to the high-frequency pulse current peak change rate are determined according to the label of the high-frequency pulse current peak change rate. If the high-frequency pulse current peak change rate is greater than the second preset threshold, the pulse numbers of the two high-frequency partial discharge sensors corresponding to the high-frequency pulse current peak change rate are extracted. If the difference between the two pulse numbers is greater than the third preset threshold, local discharge exists between the two high-frequency partial discharge sensors corresponding to the high-frequency pulse current change rate.

[0088] If the difference between the two pulse times is less than or equal to the third preset threshold, there is no partial discharge between the two high-frequency partial discharge sensors corresponding to the high-frequency pulse current peak change rate.

[0089] If the high-frequency pulse current peak value change rate is less than or equal to the second preset threshold, there is no partial discharge between the two high-frequency partial discharge sensors corresponding to the high-frequency pulse current peak value change rate.

[0090] For example, changes in the environment can also cause abnormal fluctuations in the peak value of the high-frequency pulse current. In this case, in order to eliminate the interference of environmental factors, it is necessary to extract the pulse times of the two high-frequency partial discharge sensors. If it is found that there is a significant difference between the two pulse times (greater than the third preset threshold), then this can be used as evidence of the occurrence of a partial discharge state.

[0091] The second formula can be:

[0092]

[0093] Among them, C i，i+1 represents the peak change rate of the high-frequency pulse current between the i-th high-frequency partial discharge sensor and the i+1-th high-frequency partial discharge sensor, d i represents the peak value of the high-frequency pulse current collected by the i-th high-frequency partial discharge sensor, d i+1 It represents the peak value of the high-frequency pulse current collected by the i+1th high-frequency partial discharge sensor.

[0094] The above-mentioned collector line partial discharge state monitoring method determines the high-frequency pulse current fluctuation data set by analyzing the historical high-frequency pulse current data set and the real-time high-frequency pulse current data set to be detected. With this data set, it is possible to directly determine whether a partial discharge phenomenon has occurred. If a partial discharge state is detected, the specific location where the problem occurs can be further located based on the high-frequency pulse current fluctuation data set. Since the process does not involve complex algorithms, it is possible to provide monitoring results in real time, and timely discover and accurately locate the partial discharge phenomenon in the collector line.

[0095] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0096] Corresponding to the method for monitoring partial discharge status of a collector line described in the above embodiment, Figure 2 A structural block diagram of a collector line partial discharge state monitoring device provided in an embodiment of the present application is shown. For ease of explanation, only the parts related to the embodiment of the present application are shown.

[0097] See also Figure 2 The collector line partial discharge state monitoring device in the embodiment of the present application may include:

[0098] The data acquisition module 201 is used to sequentially acquire data from high-frequency partial discharge sensors arranged in an array to obtain a real-time high-frequency pulse current set to be detected and a historical high-frequency pulse current set.

[0099] The data calculation module 202 is used to determine a high-frequency pulse current fluctuation set based on a historical high-frequency pulse current set and a real-time high-frequency pulse current set to be detected.

[0100] The state monitoring module 203 is used to determine whether a partial discharge state occurs in the target collector circuit based on the high-frequency pulse current fluctuation set.

[0101] Exemplarily, the data calculation module 202 may be used to:

[0102] Based on the historical high-frequency pulse current set, a first target high-frequency pulse current set is determined; wherein the first target high-frequency pulse current set represents a set of high-frequency pulse current averages of each high-frequency partial discharge sensor when the line is normal.

[0103] Based on the real-time high-frequency pulse current set to be detected and the first target high-frequency pulse current set, a high-frequency pulse current fluctuation set is determined.

[0104] Exemplarily, the data calculation module 202 may be used to:

[0105] The first target high-frequency pulse current set is calculated using the first formula.

[0106] The first formula can be:

[0107]

[0108] Among them, a ij represents the peak value of the high-frequency pulse current in the i-th column and the j-th row in the first target high-frequency pulse current set, M represents the number of historical high-frequency pulse current sets, (b ij ) mRepresents the peak value of the high-frequency pulse current in the i-th column and the j-th row in the m-th historical high-frequency pulse current set.

[0109] Exemplarily, the data calculation module 202 may be used to:

[0110] The difference between the real-time high-frequency pulse current set to be detected and the first target high-frequency pulse current set is calculated to obtain a high-frequency pulse current fluctuation set.

[0111] Exemplarily, the status monitoring module 203 may be used to:

[0112] The high-frequency pulse current peak value variance is calculated based on the high-frequency pulse current peak value data in the high-frequency pulse current fluctuation set.

[0113] If the high-frequency pulse current peak value variance is greater than or equal to the first preset threshold, it is determined that a partial discharge state occurs in the target collector circuit.

[0114] If the high-frequency pulse current peak variance is less than the first preset threshold, it is determined that the target collector circuit does not have a partial discharge state.

[0115] Exemplarily, the status monitoring module 203 may also be used for:

[0116] Based on the high-frequency pulse current fluctuation set, multiple high-frequency pulse current peak change rates are calculated.

[0117] The location of partial discharge is determined based on multiple high-frequency pulse current peak change rates.

[0118] Exemplarily, the status monitoring module 203 may be used to:

[0119] The second formula is used to calculate the high-frequency pulse current peak value change rate of two adjacent high-frequency pulse current peak values, and each high-frequency pulse current peak value change rate is labeled.

[0120] For each high-frequency pulse current peak change rate, the two high-frequency partial discharge sensors corresponding to the high-frequency pulse current peak change rate are determined according to the label of the high-frequency pulse current peak change rate. If the high-frequency pulse current peak change rate is greater than the second preset threshold, the pulse numbers of the two high-frequency partial discharge sensors corresponding to the high-frequency pulse current peak change rate are extracted. If the difference between the two pulse numbers is greater than the third preset threshold, local discharge exists between the two high-frequency partial discharge sensors corresponding to the high-frequency pulse current change rate.

[0121] If the difference between the two pulse times is less than or equal to the third preset threshold, there is no partial discharge between the two high-frequency partial discharge sensors corresponding to the high-frequency pulse current peak change rate.

[0122] If the high-frequency pulse current peak value change rate is less than or equal to the second preset threshold, there is no partial discharge between the two high-frequency partial discharge sensors corresponding to the high-frequency pulse current peak value change rate.

[0123] The second formula can be:

[0124]

[0125] Among them, C i，i+1 represents the peak change rate of the high-frequency pulse current between the i-th high-frequency partial discharge sensor and the i+1-th high-frequency partial discharge sensor, d i represents the peak value of the high-frequency pulse current collected by the i-th high-frequency partial discharge sensor, d i+1 It represents the peak value of the high-frequency pulse current collected by the i+1th high-frequency partial discharge sensor.

[0126] It should be noted that the information interaction, execution process, etc. between the above-mentioned devices / units are based on the same concept as the method embodiment of the present application. Their specific functions and technical effects can be found in the method embodiment part and will not be repeated here.

[0127] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0128] The present application also provides a terminal device, see Figure 3 The terminal device 300 may include: at least one processor 310 and a memory 320, wherein the memory 320 is used to store a computer program 321, and the processor 310 is used to call and run the computer program 321 stored in the memory 320 to implement the steps in any of the above-mentioned method embodiments, for example Figure 1 Steps 101 to 103 in the illustrated embodiment. Alternatively, when the processor 310 executes the computer program, the functions of each module / unit in the above-mentioned device embodiments are implemented, for example Figure 2The functions of each module are shown.

[0129] Exemplarily, the computer program 321 may be divided into one or more modules / units, one or more modules / units are stored in the memory 320, and are executed by the processor 310 to complete the present application. The one or more modules / units may be a series of computer program segments that can complete specific functions, and the program segments are used to describe the execution process of the computer program in the terminal device 300.

[0130] Those skilled in the art will understand that Figure 3 It is only an example of a terminal device and does not constitute a limitation on the terminal device. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components, such as input and output devices, network access devices, buses, etc.

[0131] The processor 310 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0132] The memory 320 may be an internal storage unit of the terminal device, or an external storage device of the terminal device, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. The memory 320 is used to store the computer program and other programs and data required by the terminal device. The memory 320 may also be used to temporarily store data that has been output or is to be output.

[0133] The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, the bus in the drawings of the present application is not limited to only one bus or one type of bus.

[0134] The collector line partial discharge status monitoring method provided in the embodiment of the present application can be applied to terminal devices such as computers, wearable devices, vehicle-mounted devices, tablet computers, laptops, netbooks, etc. The embodiment of the present application does not impose any restrictions on the specific type of terminal devices.

[0135] An embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in each embodiment of the above-mentioned collector line partial discharge status monitoring method can be implemented.

[0136] An embodiment of the present application provides a computer program product. When the computer program product is run on a mobile terminal, the mobile terminal can implement the steps in each embodiment of the above-mentioned collector line partial discharge state monitoring method when executing the computer program product.

[0137] 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 present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may at least include: any entity or device that can carry the computer program code to the camera device / terminal device, recording medium, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electrical carrier signal, telecommunication signal and software distribution medium. For example, a USB flash drive, a mobile hard disk, a disk or an optical disk.

[0138] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0139] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0140] In the embodiments provided in the present application, it should be understood that the disclosed devices / network equipment and methods can be implemented in other ways. For example, the device / network equipment embodiments described above are merely schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as 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 through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0141] 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.

[0142] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person 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. Such 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 application, and should all be included in the protection scope of the present application.

Claims

1. A method for monitoring partial discharge status of a collector line, characterized in that: The target collector circuit is provided with high-frequency partial discharge sensors arranged in an array, and the method comprises: Sequentially acquiring data from high-frequency partial discharge sensors arranged in an array to obtain a real-time high-frequency pulse current set to be detected and a historical high-frequency pulse current set; Determine a high-frequency pulse current fluctuation set based on the historical high-frequency pulse current set and the real-time high-frequency pulse current set to be detected; Based on the high-frequency pulse current fluctuation set, it is determined whether a partial discharge state occurs in the target current collection line.

2. The method for monitoring partial discharge status of a collector line according to claim 1, characterized in that: The determining of the high-frequency pulse current fluctuation set based on the historical high-frequency pulse current set and the real-time high-frequency pulse current set to be detected includes: Based on the historical high-frequency pulse current set, a first target high-frequency pulse current set is determined; wherein the first target high-frequency pulse current set represents a set of high-frequency pulse current peak values ​​of each high-frequency partial discharge sensor when the line is normal; A high-frequency pulse current fluctuation set is determined based on the to-be-detected real-time high-frequency pulse current set and the first target high-frequency pulse current set.

3. The method for monitoring partial discharge status of a collector line according to claim 2, characterized in that: The determining of the first target high-frequency pulse current set based on the historical high-frequency pulse current set includes: Using a first formula, calculating the first target high-frequency pulse current set; The first formula is: Among them, a ij represents the peak value of the high-frequency pulse current in the i-th column and the j-th row in the first target high-frequency pulse current set, M represents the number of historical high-frequency pulse current sets, (b ij ) m Represents the peak value of the high-frequency pulse current in the i-th column and the j-th row in the m-th historical high-frequency pulse current set.

4. The method for monitoring partial discharge status of a collector line according to claim 2, characterized in that: The step of determining a high-frequency pulse current fluctuation set based on the real-time high-frequency pulse current set to be detected and the first target high-frequency pulse current set includes: The difference between the real-time high-frequency pulse current set to be detected and the first target high-frequency pulse current set is calculated to obtain the high-frequency pulse current fluctuation set.

5. The method for monitoring partial discharge status of a collector line according to claim 1, characterized in that: The determining whether the target current collection line is in a partial discharge state based on the high-frequency pulse current fluctuation set includes: Calculating the high-frequency pulse current peak variance based on the high-frequency pulse current peak data in the high-frequency pulse current fluctuation set; If the high-frequency pulse current peak variance is greater than or equal to a first preset threshold, it is determined that a partial discharge state occurs in the target collector circuit; If the high-frequency pulse current peak variance is less than the first preset threshold, it is determined that no partial discharge state occurs in the target collector line.

6. The method for monitoring partial discharge status of a collector line according to claim 1, characterized in that: The method further comprises: Based on the high-frequency pulse current fluctuation set, calculating a plurality of high-frequency pulse current peak change rates; The location of the partial discharge is determined based on the multiple high-frequency pulse current peak change rates.

7. The method for monitoring partial discharge status of a collector line according to claim 6, characterized in that: The determining the location of the partial discharge based on the multiple high-frequency pulse current peak change rates comprises: The second formula is used to calculate the high-frequency pulse current peak value change rate of two adjacent high-frequency pulse current peak values, and each high-frequency pulse current peak value change rate is labeled; For each high-frequency pulse current peak value change rate, according to the label of the high-frequency pulse current peak value change rate, determine the two high-frequency partial discharge sensors corresponding to the high-frequency pulse current peak value change rate; if the high-frequency pulse current peak value change rate is greater than the second preset threshold, extract the pulse times of the two high-frequency partial discharge sensors corresponding to the high-frequency pulse current peak value change rate; if the difference between the two pulse times is greater than the third preset threshold, there is a partial discharge between the two high-frequency partial discharge sensors corresponding to the high-frequency pulse current change rate; If the difference between the two pulse times is less than or equal to the third preset threshold, there is no partial discharge between the two high-frequency partial discharge sensors corresponding to the high-frequency pulse current peak change rate; If the high-frequency pulse current peak value change rate is less than or equal to the second preset threshold, there is no partial discharge between the two high-frequency partial discharge sensors corresponding to the high-frequency pulse current peak value change rate; The second formula is: Among them, C i，i+1 represents the peak change rate of the high-frequency pulse current between the i-th high-frequency partial discharge sensor and the i+1-th high-frequency partial discharge sensor, d i represents the peak value of the high-frequency pulse current collected by the i-th high-frequency partial discharge sensor, d i+1 Represents the peak value of the high-frequency pulse current collected by the i+1th high-frequency partial discharge sensor.

8. A collector line partial discharge state monitoring device, characterized in that: include: A data acquisition module is used to sequentially acquire data from high-frequency partial discharge sensors arranged in an array to obtain a real-time high-frequency pulse current set to be detected and a historical high-frequency pulse current set; A data calculation module, used to determine a high-frequency pulse current fluctuation set based on a historical high-frequency pulse current set and the real-time high-frequency pulse current set to be detected; A state monitoring module is used to determine whether a partial discharge state occurs in the target current collection circuit based on the high-frequency pulse current fluctuation set.

9. A terminal device, comprising: A processor and a memory, wherein the memory stores a computer program that can be run on the processor, wherein when the processor executes the computer program, the method for monitoring the partial discharge state of a collector line according to any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method for monitoring the partial discharge state of a collector line according to any one of claims 1 to 7 is implemented.

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