CN116520011A - Offline determination method, device and equipment for aging state of lightning arrester and storage medium - Google Patents
Offline determination method, device and equipment for aging state of lightning arrester and storage medium Download PDFInfo
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Abstract
The invention discloses an offline determining method, device and equipment for the aging state of a lightning arrester and a storage medium, and belongs to the technical field of power grid safety. The method comprises the following steps: acquiring target electrical characteristic data of a target lightning arrester in an offline state; determining a target characteristic variation of the target lightning arrester according to the target electrical characteristic data; and determining the aging state of the target lightning arrester according to the change rate of the target electrical characteristic data, the change rate of the target characteristic change quantity and the aging judgment condition. Through the technical scheme, the accuracy of determining the aging state of the lightning arrester in the off-line state can be improved.
Description
Technical Field
The invention relates to the technical field of power grid safety, in particular to an offline determining method, device and equipment for aging state of a lightning arrester and a storage medium.
Background
The gapless metal oxide arrester has excellent nonlinear characteristics, and thus becomes a main suppression device for operation overvoltage, lightning overvoltage, and the like of a power system. As a protection device of the electric power system, the safety and reliability of the lightning arrester are guaranteed for the safe operation of the electric power system, so how to accurately judge the aging state of the lightning arrester is particularly important for the safe operation of the electric power system.
The current aging detection of the lightning arrester is only based on that the change rate of the direct current reference voltage at 1mA in relevant regulations is less than or equal to 5 percent and the leakage current at 0.75U and 1mA is less than or equal to 50 mu A. However, in the actual operation process, the problem that the lightning arrester explodes frequently due to inaccurate aging detection caused by the fact that the aging detection threshold value is not reached is still found. It can be seen that the way in which a single characteristic parameter evaluates the ageing state of the arrester is inaccurate. Therefore, a more accurate method for judging the aging state of the lightning arrester is needed.
Disclosure of Invention
The invention provides an offline determining method, device and equipment for the aging state of a lightning arrester and a storage medium, so as to improve the accuracy of determining the aging state of the lightning arrester in the offline state.
According to an aspect of the present invention, there is provided an offline determining method of an aging state of an arrester, the method comprising:
acquiring target electrical characteristic data of a target lightning arrester in an offline state; the target electrical characteristic data comprises a target reference voltage and a target residual voltage; the target reference voltage comprises a target direct current reference voltage and a target alternating current reference voltage; the target direct current reference voltage comprises a first target direct current reference voltage and a second target direct current reference voltage; the target alternating reference voltage comprises a target first alternating reference voltage and a target second alternating reference voltage;
determining a target characteristic variation of the target lightning arrester according to the target electrical characteristic data; the target characteristic transformation quantity comprises a target nonlinear coefficient and a target residual voltage ratio; the target nonlinear coefficient comprises a target alternating current nonlinear coefficient and a target direct current nonlinear coefficient;
and determining the aging state of the target lightning arrester according to the change rate of the target electrical characteristic data, the change rate of the target characteristic change quantity and the aging judgment condition.
According to another aspect of the present invention, there is provided an offline determining apparatus for determining an aging state of an arrester, the apparatus comprising:
the target electrical characteristic data acquisition module is used for acquiring target electrical characteristic data of the target lightning arrester in an offline state; the target electrical characteristic data comprises a target reference voltage and a target residual voltage; the target reference voltage comprises a target direct current reference voltage and a target alternating current reference voltage; the target direct current reference voltage comprises a first target direct current reference voltage and a second target direct current reference voltage; the target alternating reference voltage comprises a target first alternating reference voltage and a target second alternating reference voltage;
the target characteristic change amount determining module is used for determining the target characteristic change amount of the target lightning arrester according to the target electrical characteristic data; the target characteristic transformation quantity comprises a target nonlinear coefficient and a target residual voltage ratio; the target nonlinear coefficient comprises a target alternating current nonlinear coefficient and a target direct current nonlinear coefficient;
and the aging state determining module is used for determining the aging state of the target lightning arrester according to the change rate of the target electrical characteristic data, the change rate of the target characteristic change quantity and the aging judging condition.
According to another aspect of the present invention, there is provided an electronic apparatus including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the method of determining the ageing status of a lightning arrester according to any of the embodiments of the invention.
According to another aspect of the invention, there is provided a computer readable storage medium storing computer instructions for causing a processor to perform the method for offline determining the ageing status of a lightning arrester according to any of the embodiments of the invention.
According to the technical scheme, the target electrical characteristic data of the target lightning arrester in the off-line state is obtained, then the target characteristic change quantity of the target lightning arrester is determined according to the target electrical characteristic data, and further the aging state of the target lightning arrester is determined according to the change rate of the target electrical characteristic data, the change rate of the target characteristic change quantity and the aging judgment condition. According to the technical scheme, the aging state of the lightning arrester can be judged based on the change rates of different electrical related characteristics, and the accuracy of determining the aging state of the lightning arrester is improved.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of an offline determining method for an aging state of a lightning arrester according to a first embodiment of the present invention;
fig. 2 is a flowchart of an offline determining method for an aging state of a lightning arrester according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of an offline determining device for aging status of a lightning arrester according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electronic device implementing an offline determining method of an aging state of an arrester according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "target," "test," and the like in the description and claims of the present invention and in the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In addition, in the technical scheme of the invention, the processing of collecting, storing, using, processing, transmitting, providing, disclosing and the like related to the lightning arrester related data and the like all accord with the regulations of related laws and regulations, and the public welcome is not violated.
Example 1
Fig. 1 is a flowchart of an offline determining method for an aging state of a lightning arrester according to an embodiment of the present invention. The embodiment is applicable to the case of how the ageing state determination is performed in an off-line state of the arrester, and the method may be performed by an off-line determining device of the ageing state of the arrester, which may be implemented in hardware and/or software and may be integrated in an electronic device, such as a server, carrying the off-line determining function of the ageing state of the arrester. As shown in fig. 1, the offline determination method of the aging state of the lightning arrester of the present embodiment may include:
s110, acquiring target electrical characteristic data of the target lightning arrester in an off-line state.
In this embodiment, the target lightning arrester is a lightning arrester in which the seed needs to be subjected to aging detection; an alternative target arrester is a zinc oxide arrester.
The target electrical characteristic data refers to the relevant electrical data of the target lightning arrester; alternatively, the target electrical characteristic data may include a target reference voltage and a target residual voltage. The target reference voltage refers to the reference voltage of the target lightning arrester under a specific current; optionally, the target reference voltage includes a target direct current reference voltage and a target alternating current reference voltage.
The target direct current reference voltage refers to the reference voltage of the target lightning arrester under a specific direct current; optionally, the target dc reference voltage includes a first target dc reference voltage and a second target dc reference voltage; the first target direct current reference voltage is the effective voltage at two ends of the target lightning arrester under the condition that the power frequency reference direct current is 0.1mA; the second target direct current reference voltage refers to the effective voltage at the power frequency reference current at 1mA across the target arrester.
The target alternating current reference voltage refers to the reference voltage of the target lightning arrester under a specific alternating current; optionally, the target ac reference voltage includes a first target ac reference voltage and a second target ac reference voltage; the first target alternating reference voltage refers to the effective voltage at two ends of the target lightning arrester under the condition that the power frequency reference alternating current is 0.1mA; the second target ac reference voltage refers to the effective voltage across the target arrester at 1mA at the power frequency reference current.
The off-line state refers to a state in which the arrester is in a power-off state, that is, a state in which the arrester is not operating.
Specifically, a specific ac voltage or a specific dc voltage may be applied to the valve sheet of the target lightning arrester in an off-line state, and the target electrical characteristic data of the target lightning arrester at this time may be measured.
S120, determining the target characteristic variation of the target lightning arrester according to the target electrical characteristic data.
In this embodiment, the target feature transformation amount refers to a transformation feature of the target electrical data, and optionally, the target feature transformation amount may include a target nonlinear coefficient and a target residual voltage ratio; the target nonlinear coefficient is a nonlinear coefficient determined based on target electrical characteristic data of the target lightning arrester; alternatively, the target nonlinear coefficient may include a target ac nonlinear coefficient and a target dc nonlinear coefficient.
Alternatively, the target nonlinear coefficient may be determined according to the target reference voltage based on a preset nonlinear determination manner; and determining a target residual voltage ratio according to the target residual voltage and the target direct current reference voltage.
The target reference voltage comprises a direct current reference voltage and an alternating current reference voltage.
Specifically, the target nonlinear coefficient may be determined from the target reference voltage by the following formula:
wherein, under the specific direct current voltage applied,I 1 indicating that the direct current is 0.1mA; i 2 Indicating that the direct current is 1mA; u (U) 2 Is a first target direct current reference voltage; u (U) 2 Is the second target dc reference voltage. At a specific applied AC voltage, I 1 Indicating an alternating current of 0.1mA; i 2 Indicating that the alternating current is 1mA; u is a first target alternating reference voltage; u (U) 2 A reference voltage is exchanged for a second target.
Then, the ratio between the target residual voltage and the target direct current reference voltage can be used as the target residual voltage ratio. The target direct current reference voltage is a reference voltage with a current of 1 mA.
S130, determining the aging state of the target lightning arrester according to the change rate of the target electrical characteristic data, the change rate of the target characteristic change quantity and the aging judgment condition.
In this embodiment, the aging judgment condition refers to a standard condition for performing aging judgment on the lightning arrester; optionally, at least one of the following may be included: the change rate of the first direct current reference voltage reaches a first threshold value; the change rate of the first alternating reference voltage reaches a first threshold value; the change rate of the second direct current reference voltage reaches a second threshold value; the change rate of the second alternating reference voltage reaches a second threshold value; the rate of change of the nonlinear coefficient reaches a third threshold; the rate of change of the residual pressure ratio reaches a fourth threshold. It should be noted that the first threshold, the second threshold, the third threshold, and the fourth threshold may be set by those skilled in the art based on actual requirements; preferably, the first threshold is 11%; the second threshold is 3%; the third threshold is 45%; the fourth threshold is 6%; the fifth threshold is 5%; the sixth threshold is 50 μA.
By an aged state is meant a state of whether the target arrester is aged, including aged and unaged.
Alternatively, the rate of change of the target electrical characteristic data may be determined from the target electrical characteristic data; determining the change rate of the target feature change quantity according to the target feature change quantity; and if the change rate of the target electrical characteristic data and/or the change rate of the target characteristic change amount meet any one of the aging judgment conditions, determining that the aging state of the target lightning arrester is aging.
Specifically, the change rate of the target electrical characteristic data may be determined according to the target electrical characteristic data and the initial electrical characteristic data, for example, a difference between the first target dc reference voltage and the initial dc reference voltage may be calculated, and the difference may be divided by the entropy of the initial dc reference voltage to be used as the conversion rate of the first target dc reference voltage. The rate of change of the target feature variation may then be determined based on the target feature variation and the initial feature variation. And further, if any one of the change rate of the target electrical characteristic data and/or the change rate of the target characteristic change amount satisfies any one of the aging judgment conditions, determining that the aging state of the target lightning arrester is aging.
According to the technical scheme, the target electrical characteristic data of the target lightning arrester in the off-line state is obtained, then the target characteristic change quantity of the target lightning arrester is determined according to the target electrical characteristic data, and further the aging state of the target lightning arrester is determined according to the change rate of the target electrical characteristic data, the change rate of the target characteristic change quantity and the aging judgment condition. According to the technical scheme, the aging state of the lightning arrester can be judged based on the change rates of different electrical related characteristics, and the accuracy of determining the aging state of the lightning arrester is improved.
Example two
Fig. 2 is a flowchart of an offline determining method for an aging state of a lightning arrester according to a second embodiment of the present invention. The present embodiment explains in detail the determination of the aging judgment conditions on the basis of the above embodiments. As shown in fig. 2, the offline determination method of the aging state of the lightning arrester of the present embodiment may include:
and S210, performing a current impact aging test on the test lightning arrester.
In this embodiment, the test arrester means an arrester that determines an aging state judgment condition; the number of test arresters may be one or more. It should be noted that the type of the test lightning arrester is the same as the type of the target lightning arrester, so that the obtained aging state judgment condition can be applied to the target lightning arrester.
Specifically, according to the actual measurement impulse current waveform, based on the principle of equivalent repeated charge transfer in IEC standard 60099-4, impulse aging tests are carried out on valve plates of the test lightning arresters (for example, 10 test lightning arresters are respectively marked as #D1- #D10) by adopting impulse current with the waveform of 8/20 mu s and the amplitude of 27kA, the number of impulse groups is one group of 2 impulses, each impulse is 50-60 s, and the test is cooled to room temperature. The impact test is carried out until the test piece of the valve plate of the lightning arrester is completely damaged. After each group of impact, the test direct current reference voltage, the test alternating current reference voltage, the test residual voltage, the leakage current and the like of the 10 test lightning arrester valve plate samples are respectively measured and recorded.
S220, determining an aging judgment condition according to the test data and the specified aging standard.
In this embodiment, the test data refers to test electrical characteristic data; optionally, the test electrical characteristic data includes a test reference voltage and a test residual voltage; the test reference voltages include a test direct current reference voltage and a test alternating current reference voltage; the test direct current reference voltage comprises a first test direct current reference voltage and a second test direct current reference voltage; the first test direct current reference voltage is an effective voltage of two ends of the test lightning arrester under the condition that the power frequency reference direct current is 0.1mA; the second test direct current reference voltage refers to the effective voltage at the power frequency reference current at 1mA across the test arrester.
The test ac reference voltage comprises a first test ac reference voltage and a second test ac reference voltage; the first test alternating current reference voltage is an effective voltage at two ends of the test lightning arrester under the condition that the power frequency reference alternating current is 0.1mA; the second test ac reference voltage refers to the effective voltage across the test arrester at 1mA at the power frequency reference current.
Optionally, determining test electrical characteristic data for testing the lightning arrester during a current surge ageing test; according to the test electrical characteristic data, determining a test nonlinear coefficient and a test residual voltage ratio of the test lightning arrester; the test nonlinear coefficients include a test direct current nonlinear coefficient and a test alternating current nonlinear coefficient.
Specifically, for each impact, a test nonlinear coefficient corresponding to the impact can be determined according to a test reference voltage based on a preset nonlinear determination mode; and determining the test residual voltage ratio corresponding to the impact according to the test residual voltage and the test direct current reference voltage. For example, the test nonlinear coefficient may be determined from the test reference voltage by the following formula:
wherein, under the specific direct current voltage applied, I 1 Indicating that the direct current is 0.1mA; i 2 Indicating that the direct current is 1mA; u (U) 2 A first test DC reference voltage; u (U) 2 Is the second test dc reference voltage. At a specific applied AC voltage, I 1 Indicating an alternating current of 0.1mA; i 2 Indicating that the alternating current is 1mA; u is a first test AC reference voltage; u (U) 2 For the second test ac reference voltage.
Then, the ratio between the test residual voltage and the test direct current reference voltage can be used as the test residual voltage ratio. The test direct current reference voltage is a reference voltage with a current of 1 mA.
The specified aging criterion is that the change rate of the direct current reference voltage reaches a fifth threshold value and/or that the leakage current reaches a sixth threshold value.
Further, when the dc reference voltage and the leakage current of the test lightning arrester reach the predetermined aging standard, the change rate of the test electrical characteristic data, the change rate of the test nonlinear coefficient, and the change rate of the test residual voltage ratio under the impact are determined, and the aging judgment standard is determined according to the predetermined aging standard, the change rate of the test electrical characteristic data, the change rate of the test nonlinear coefficient, and the change rate of the test residual voltage ratio.
S230, acquiring target electrical characteristic data of the target lightning arrester in an off-line state.
S240, determining the target characteristic variation of the target lightning arrester according to the target electrical characteristic data.
S250, determining the aging state of the target lightning arrester according to the change rate of the target electrical characteristic data, the change rate of the target characteristic change quantity and the aging judgment condition.
According to the technical scheme provided by the embodiment of the invention, the test lightning arrester is subjected to a current impact aging test, and then the aging judgment conditions are determined according to test data and specified aging standards; and then acquiring target electrical characteristic data of the target lightning arrester in an offline state, determining target characteristic variation of the target lightning arrester according to the target electrical characteristic data, and further determining the aging state of the target lightning arrester according to the variation rate of the target electrical characteristic data, the variation rate of the target characteristic variation and the aging judgment condition. Compared with the existing judging conditions for judging the aging of the lightning arrester based on the direct-current reference voltage change rate and the leakage current, the method and the device for judging the aging state of the lightning arrester by testing the tested lightning arrester enrich the judging conditions for judging the aging state of the lightning arrester accurately, and therefore a foundation is laid for judging the aging state of the lightning arrester accurately. .
Example III
Fig. 3 is a schematic structural diagram of an offline determining device for an aging state of a lightning arrester according to a third embodiment of the present invention. The embodiment can be applied to the situation of determining the aging state of the lightning arrester in an offline state, and the device can be realized in a form of hardware and/or software and can be integrated in an electronic device, such as a server, carrying the offline determining function of the aging state of the lightning arrester. As shown in fig. 3, the offline determining device for the aging state of the lightning arrester of the present embodiment may include:
a target electrical characteristic data acquisition module 310, configured to acquire target electrical characteristic data of the target lightning arrester in an offline state; the target electrical characteristic data comprises a target reference voltage and a target residual voltage; the target reference voltage comprises a target direct current reference voltage and a target alternating current reference voltage; the target direct current reference voltage comprises a first target direct current reference voltage and a second target direct current reference voltage; the target ac reference voltage comprises a target first ac reference voltage and a target second ac reference voltage;
a target characteristic variation determining module 320, configured to determine a target characteristic variation of the target lightning arrester according to the target electrical characteristic data; the target feature transformation quantity comprises a target nonlinear coefficient and a target residual voltage ratio; the target nonlinear coefficient comprises a target alternating current nonlinear coefficient and a target direct current nonlinear coefficient;
the aging state determining module 330 is configured to determine an aging state of the target lightning arrester according to the change rate of the target electrical characteristic data, the change rate of the target characteristic change amount, and the aging judgment condition.
According to the technical scheme, the target electrical characteristic data of the target lightning arrester in the off-line state is obtained, then the target characteristic change quantity of the target lightning arrester is determined according to the target electrical characteristic data, and further the aging state of the target lightning arrester is determined according to the change rate of the target electrical characteristic data, the change rate of the target characteristic change quantity and the aging judgment condition. According to the technical scheme, the aging state of the lightning arrester can be judged based on the change rates of different electrical related characteristics, and the accuracy of determining the aging state of the lightning arrester is improved.
Optionally, the target feature variation determining module 320 is specifically configured to:
determining a target nonlinear coefficient according to a target reference voltage based on a preset nonlinear determination mode;
and determining a target residual voltage ratio according to the target residual voltage and the target direct current reference voltage.
Optionally, the aging judgment condition includes at least one of:
the change rate of the first direct current reference voltage reaches a first threshold value;
the change rate of the first alternating reference voltage reaches a first threshold value;
the change rate of the second direct current reference voltage reaches a second threshold value;
the change rate of the second alternating reference voltage reaches a second threshold value;
the rate of change of the nonlinear coefficient reaches a third threshold;
the rate of change of the residual pressure ratio reaches a fourth threshold;
the change rate of the direct current reference voltage reaches a fifth threshold value;
the leakage current reaches a sixth threshold.
Optionally, the aging state determining module 330 is specifically configured to:
determining the change rate of the target electrical characteristic data according to the target electrical characteristic data;
determining the change rate of the target feature change quantity according to the target feature change quantity;
and if the change rate of the target electrical characteristic data and/or the change rate of the target characteristic change amount meet any one of the aging judgment conditions, determining that the aging state of the target lightning arrester is aging.
Optionally, the target arrester is a zinc oxide arrester.
Optionally, the apparatus further comprises:
the aging test module is used for carrying out a current impact aging test on the test lightning arrester;
the aging judgment condition determining module is used for determining the aging judgment condition according to the test data and the specified aging standard; wherein the types of the test lightning arrester and the target lightning arrester are the same.
Optionally, the aging judgment condition determining module is specifically configured to:
determining test electrical characteristic data of a test lightning arrester in the current impact aging test process; the test electrical characteristic data comprises a test reference voltage and a test residual voltage; the test reference voltages include a test direct current reference voltage and a test alternating current reference voltage;
according to the test electrical characteristic data, determining a test nonlinear coefficient and a test residual voltage ratio of the test lightning arrester; the test nonlinear coefficient comprises a test direct current nonlinear coefficient and a test alternating current nonlinear coefficient;
under the condition that the direct-current reference voltage and the leakage current of the test lightning arrester reach the specified aging standard, determining the change rate of test electrical characteristic data, the change rate of test nonlinear coefficients and the change rate of test residual voltage ratio;
and determining an aging judgment standard according to the specified aging standard, the change rate of the test electrical characteristic data, the change rate of the test nonlinear coefficient and the change rate of the test residual voltage ratio.
The offline determining device for the aging state of the lightning arrester provided by the embodiment of the invention can execute the offline determining method for the aging state of the lightning arrester provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the executing method.
Example IV
Fig. 4 is a schematic structural diagram of an electronic device implementing an offline determining method of an aging state of an arrester according to an embodiment of the present invention; fig. 4 shows a schematic diagram of the structure of an electronic device 10 that may be used to implement an embodiment of the invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. Electronic equipment may also represent various forms of mobile devices, such as personal digital processing, cellular telephones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.
As shown in fig. 4, the electronic device 10 includes at least one processor 11, and a memory, such as a Read Only Memory (ROM) 12, a Random Access Memory (RAM) 13, etc., communicatively connected to the at least one processor 11, in which the memory stores a computer program executable by the at least one processor, and the processor 11 may perform various appropriate actions and processes according to the computer program stored in the Read Only Memory (ROM) 12 or the computer program loaded from the storage unit 18 into the Random Access Memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 may also be stored. The processor 11, the ROM 12 and the RAM 13 are connected to each other via a bus 14. An input/output (I/O) interface 15 is also connected to bus 14.
Various components in the electronic device 10 are connected to the I/O interface 15, including: an input unit 16 such as a keyboard, a mouse, etc.; an output unit 17 such as various types of displays, speakers, and the like; a storage unit 18 such as a magnetic disk, an optical disk, or the like; and a communication unit 19 such as a network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.
The processor 11 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 11 performs the various methods and processes described above, such as an offline determination of the aging state of the arrester.
In some embodiments, the method of offline determination of the aging state of the arrester may be implemented as a computer program, which is tangibly embodied on a computer readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 10 via the ROM 12 and/or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the above-described offline determining method of the aging state of the arrester may be performed. Alternatively, in other embodiments, the processor 11 may be configured to perform the offline determination of the aging state of the arrester in any other suitable manner (e.g., by means of firmware).
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for carrying out methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.
The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (10)
1. An offline determining method for an aging state of a lightning arrester, comprising:
acquiring target electrical characteristic data of a target lightning arrester in an offline state; the target electrical characteristic data comprises a target reference voltage and a target residual voltage; the target reference voltage comprises a target direct current reference voltage and a target alternating current reference voltage; the target direct current reference voltage comprises a first target direct current reference voltage and a second target direct current reference voltage; the target alternating reference voltage comprises a target first alternating reference voltage and a target second alternating reference voltage;
determining a target characteristic variation of the target lightning arrester according to the target electrical characteristic data; the target characteristic transformation quantity comprises a target nonlinear coefficient and a target residual voltage ratio; the target nonlinear coefficient comprises a target alternating current nonlinear coefficient and a target direct current nonlinear coefficient;
and determining the aging state of the target lightning arrester according to the change rate of the target electrical characteristic data, the change rate of the target characteristic change quantity and the aging judgment condition.
2. The method of claim 1, wherein determining a target characteristic variation of the target arrester from the target electrical characteristic data comprises:
determining a target nonlinear coefficient according to the target reference voltage based on a preset nonlinear determination mode;
and determining a target residual voltage ratio according to the target residual voltage and the target direct current reference voltage.
3. The method of claim 1, wherein the aging determination condition comprises at least one of:
the change rate of the first direct current reference voltage reaches a first threshold value;
the change rate of the first alternating reference voltage reaches the first threshold value;
the change rate of the second direct current reference voltage reaches a second threshold value;
the rate of change of the second alternating reference voltage reaches the second threshold;
the rate of change of the nonlinear coefficient reaches a third threshold;
the rate of change of the residual pressure ratio reaches a fourth threshold;
the change rate of the direct current reference voltage reaches a fifth threshold value;
the leakage current reaches a sixth threshold.
4. The method according to claim 3, wherein the determining the aging state of the target arrester based on the rate of change of the target electrical characteristic data, the rate of change of the target characteristic change amount, and the aging judgment condition includes:
determining the change rate of the target electrical characteristic data according to the target electrical characteristic data;
determining the change rate of the target characteristic change quantity according to the target characteristic change quantity;
and if the change rate of the target electrical characteristic data and/or the change rate of the target characteristic change quantity meets any one of the aging judgment conditions, determining that the aging state of the target lightning arrester is aging.
5. The method of any one of claims 1-4, the target arrester being a zinc oxide arrester.
6. The method as recited in claim 1, further comprising:
carrying out a current impact aging test on the test lightning arrester;
determining the aging judgment conditions according to the test data and the specified aging standard; wherein the test arrester and the target arrester are of the same type.
7. The method of claim 6, wherein determining the aging determination condition based on the test data and a prescribed aging criterion comprises:
determining test electrical characteristic data of the test lightning arrester in the current impact aging test process; the test electrical characteristic data comprises a test reference voltage and a test residual voltage; the test reference voltage comprises a test direct current reference voltage and a test alternating current reference voltage;
determining a test nonlinear coefficient and a test residual voltage ratio of the test lightning arrester according to the test electrical characteristic data; the test nonlinear coefficient comprises a test direct current nonlinear coefficient and a test alternating current nonlinear coefficient;
determining the change rate of the test electrical characteristic data, the change rate of the test nonlinear coefficient and the change rate of the test residual voltage ratio under the condition that the direct current reference voltage and the leakage current of the test lightning arrester reach the specified aging standard;
and determining the aging judgment standard according to the specified aging standard, the change rate of the test electrical characteristic data, the change rate of the test nonlinear coefficient and the change rate of the test residual voltage ratio.
8. An offline determining device for an aging state of an arrester, the device comprising:
the target electrical characteristic data acquisition module is used for acquiring target electrical characteristic data of the target lightning arrester in an offline state; the target electrical characteristic data comprises a target reference voltage and a target residual voltage; the target reference voltage comprises a target direct current reference voltage and a target alternating current reference voltage; the target direct current reference voltage comprises a first target direct current reference voltage and a second target direct current reference voltage; the target alternating reference voltage comprises a target first alternating reference voltage and a target second alternating reference voltage;
the target characteristic change amount determining module is used for determining the target characteristic change amount of the target lightning arrester according to the target electrical characteristic data; the target characteristic transformation quantity comprises a target nonlinear coefficient and a target residual voltage ratio; the target nonlinear coefficient comprises a target alternating current nonlinear coefficient and a target direct current nonlinear coefficient;
and the aging state determining module is used for determining the aging state of the target lightning arrester according to the change rate of the target electrical characteristic data, the change rate of the target characteristic change quantity and the aging judging condition.
9. An electronic device, the electronic device comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the method of offline determining the ageing status of a lightning arrester according to any of claims 1-7.
10. A computer readable storage medium storing computer instructions for causing a processor to perform the method of offline determining the ageing status of a lightning arrester according to any of claims 1-7.
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| CN202310565667.5A CN116520011A (en) | 2023-05-18 | 2023-05-18 | Offline determination method, device and equipment for aging state of lightning arrester and storage medium |
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| CN202310565667.5A CN116520011A (en) | 2023-05-18 | 2023-05-18 | Offline determination method, device and equipment for aging state of lightning arrester and storage medium |
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