Partial discharge calibration method and device, equipment, storage medium and program product

Abstract

The invention relates to a partial discharge calibration method and device, equipment, a storage medium and a program product. The method comprises the steps that in response to a first control signal, the partial discharge sensing transmitting device is switched from a first state to a second state, the first state is a signal receiving state, and the second state is used for simulating transmission of a calibration pulse signal; according to the second state, the channel switching assembly is controlled to be switched from a partial discharge detection access to a partial discharge generation access, the partial discharge detection assembly is communicated with the broadband antenna under the partial discharge detection access, and the partial discharge generation assembly is communicated with the broadband antenna under the partial discharge generation access; and controlling the partial discharge generation assembly to simulate and send a calibration pulse signal, the calibration pulse signal being sent through the broadband antenna, and the calibration pulse signal being used for online calibration of the partial discharge detection assembly. By adopting the method, the accuracy of partial discharge calibration can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-voltage equipment, in particular to a partial discharge calibration method and device, equipment, storage medium and program product. BACKGROUND

[0002] The partial discharge positioning of a gas insulated switchgear (GIS) in a metal closed cavity is an important state monitoring method of the gas insulated switchgear. Through the partial discharge positioning, the insulation deterioration of the gas insulated switchgear can be found as early as possible. The state monitoring of the gas insulated switchgear is usually realized through a built-in partial discharge detection component of the gas insulated switchgear.

[0003] In the related art, before the partial discharge detection component is formally put into work, it needs to be calibrated and verified. A partial discharge instrument is placed inside the gas insulated switchgear to simulate the generation of a partial discharge signal. Then, the built-in partial discharge detection component measures the partial discharge signal emitted by the partial discharge instrument, so as to calibrate the partial discharge of the partial discharge detection component. After the calibration is completed, the partial discharge instrument needs to be removed, and then the normal installation and live work are performed.

[0004] However, since the partial discharge instrument needs to be placed and removed during the calibration process, the partial discharge calibration of the detection component can only be performed offline. The performance parameters of the partial discharge calibration performed under the actual live working condition are quite different, so the accuracy of the partial discharge calibration cannot be guaranteed. SUMMARY

[0005] Therefore, it is necessary to provide a partial discharge calibration method, device, equipment, storage medium and program product capable of improving the accuracy of partial discharge calibration in view of the above technical problems.

[0006] In a first aspect, the present application provides a partial discharge calibration method applied to a controller in a partial discharge sensing and transmitting device. The partial discharge sensing and transmitting device is arranged inside a gas chamber of a gas insulated switchgear. The partial discharge sensing and transmitting device further includes a wideband antenna, a channel switching component, a partial discharge generating component and a partial discharge detection component. The channel switching component is connected with the wideband antenna, the partial discharge generating component, the partial discharge detection component and the controller respectively. The method includes:

[0007] In response to a first control signal, the partial discharge sensing and transmitting device is switched from a first state to a second state. The first state is a signal receiving state, and the second state is used to simulate the sending of a calibration pulse signal.

[0008] According to the second state, the channel switching component is controlled to switch from a local discharge detection path to a local discharge occurrence path, under the local discharge detection path, the local discharge detection component is in communication with the wideband antenna, and under the local discharge occurrence path, the local discharge occurrence component is in communication with the wideband antenna.

[0009] The local discharge occurrence component is controlled to simulate sending a calibration pulse signal, the calibration pulse signal is sent through the wideband antenna, and the calibration pulse signal is used for online calibration of the local discharge detection component.

[0010] In some embodiments, after the control of the local discharge occurrence component to simulate sending a calibration pulse signal, the method further comprises:

[0011] In the case where the local discharge occurrence component completes the emission of the calibration pulse signal, the channel switching component is controlled to switch from the local discharge occurrence path to the local discharge detection path.

[0012] In some embodiments, after the control of the local discharge occurrence component to simulate sending a calibration pulse signal, the method further comprises:

[0013] In response to a second control signal, the local discharge sensing device is switched from a second state to a first state;

[0014] According to the first state, the channel switching component is controlled to switch from the local discharge occurrence path to the local discharge detection path.

[0015] In some embodiments, after the control of the channel switching component to switch from the local discharge occurrence path to the local discharge detection path, the method further comprises:

[0016] The local discharge detection component is controlled to receive a local discharge calibrated calibration pulse signal sent by another local discharge sensing device.

[0017] In some embodiments, after the control of the local discharge detection component to receive a local discharge calibrated calibration pulse signal sent by another local discharge sensing device, comprising:

[0018] The waveform information of the local discharge calibrated calibration pulse signal sent by the other local discharge sensing device is sent to a calibration device, so that the calibration device determines the performance index of the local discharge detection component according to the waveform information.

[0019] In some embodiments, the method further comprises:

[0020] receiving polling control information of the partial discharge sensing transmitting device, the polling control information being used for indicating that a plurality of partial discharge sensing transmitting devices are polled to switch to the second state and that a partial discharge sensing transmitting device not polled is maintained as the first state, and the polling control information comprising polling sequence information of the plurality of partial discharge sensing transmitting devices;

[0021] at a switching time node corresponding to the polling sequence information, controlling the channel switching component to switch from the partial discharge detection path to the partial discharge occurrence path.

[0022] In a second aspect, the present application further provides a partial discharge calibration device applied to a controller in a partial discharge sensing transmitting device, the partial discharge sensing transmitting device being arranged inside a gas chamber of a gas insulated switch, and the partial discharge sensing transmitting device further comprising a wideband antenna, a channel switching component, a partial discharge occurrence component and a partial discharge detection component; the channel switching component is connected with the wideband antenna, the partial discharge occurrence component, the partial discharge detection component and the controller respectively; the device comprises:

[0023] a switching module, configured to switch the partial discharge sensing transmitting device from a first state to a second state in response to a first control signal, the first state being a signal receiving state, and the second state being used for simulating transmission of a calibration pulse signal; according to the second state, the channel switching component is controlled to switch from a partial discharge detection path to a partial discharge occurrence path, the partial discharge detection component is in communication with the wideband antenna under the partial discharge detection path, and the partial discharge occurrence component is in communication with the wideband antenna under the partial discharge occurrence path;

[0024] a control module, configured to control the partial discharge occurrence component to simulate transmission of a calibration pulse signal, the calibration pulse signal being transmitted through the wideband antenna, and the calibration pulse signal being used for online calibration of the partial discharge detection component.

[0025] In some embodiments, the switching module is further configured to, in a case where the partial discharge occurrence component completes transmission of the calibration pulse signal, control the channel switching component to switch from the partial discharge occurrence path to the partial discharge detection path.

[0026] In some embodiments, the switching module is further configured to, in response to a second control signal, switch the partial discharge sensing transmitting device from the second state to the first state; and according to the first state, control the channel switching component to switch from the partial discharge occurrence path to the partial discharge detection path.

[0027] In some embodiments, the control module is further configured to control the partial discharge detection component to receive a calibration pulse signal for partial discharge calibration transmitted by another partial discharge sensing transmitting device.

[0028] In some embodiments, the control module is further configured to send waveform information of the calibration pulse signal of the partial discharge calibration sent by the other partial discharge aware transmitting device to the calibration device, so that the calibration device determines the performance index of the partial discharge detection component according to the waveform information.

[0029] In some embodiments, the control module is further configured to receive polling control information of the partial discharge aware transmitting device, the polling control information being used to indicate that a plurality of partial discharge aware transmitting devices are polled to switch to the second state and that a partial discharge aware transmitting device not polled is kept in the first state, and the polling control information includes polling sequence information of the plurality of partial discharge aware transmitting devices; and the channel switching component is controlled to switch from the partial discharge detection path to the partial discharge generation path at a switching time node corresponding to the polling sequence information.

[0030] In a third aspect, the present application further provides a partial discharge aware transmitting device, which is arranged inside a gas chamber of a gas insulated switch, and further includes a wideband antenna, a channel switching component, a partial discharge generation component, and a partial discharge detection component; the channel switching component is connected with the wideband antenna, the partial discharge generation component, the partial discharge detection component, and the controller respectively; and the controller is configured to execute the partial discharge calibration method of the first aspect.

[0031] In a fourth aspect, the present application further provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the partial discharge calibration method of the first aspect.

[0032] In a fifth aspect, the present application further provides a computer program product, which includes a computer program, and the computer program is executed by a processor to implement the partial discharge calibration method of the first aspect.

[0033] The partial discharge calibration method, device, equipment, storage medium and program product, in response to the first control signal, switch the partial discharge perception and transmission device from a first state to a second state, the first state is a signal receiving state, and the second state is used for simulating sending a calibration pulse signal; according to the second state, the channel switching component is switched from a partial discharge detection path to a partial discharge generation path, the partial discharge detection component is in communication with the wideband antenna under the partial discharge detection path, and the partial discharge generation component is in communication with the wideband antenna under the partial discharge generation path; the partial discharge generation component is controlled to simulate sending a calibration pulse signal, the calibration pulse signal is sent through the wideband antenna, and the calibration pulse signal is used for online calibration of the partial discharge detection component. Since the partial discharge detection component of the multiplexing gas insulated switch is arranged in the partial discharge perception and transmission device, and the channel switching component in the partial discharge perception and transmission device is switched between the partial discharge generation component and the partial discharge detection component, the partial discharge perception and transmission integration is realized, so that the partial discharge detector does not need to be placed and taken out in the gas insulated switch during the partial discharge calibration, the online calibration is realized, and the calibration result can reflect the performance of the partial discharge detection component of the gas insulated switch under actual working conditions, and the accuracy of the partial discharge calibration is improved. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the drawings needed to be used in the description of the embodiments of the present application or the related art will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other related drawings can be obtained by those skilled in the art without creative labor.

[0035] Figure 1 A structure schematic diagram of a partial discharge perception and transmission device provided by an embodiment of the present application;

[0036] Figure 2 A flowchart of a partial discharge calibration method provided by an embodiment of the present application;

[0037] Figure 3 A flowchart of another partial discharge calibration method provided by an embodiment of the present application;

[0038] Figure 4 A flowchart of still another partial discharge calibration method provided by an embodiment of the present application;

[0039] Figure 5 A structure block diagram of a partial discharge calibration device provided by an embodiment of the present application;

[0040] Figure 6 An internal structure diagram of a computer device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0041] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application.

[0042] The partial discharge calibration method provided by the embodiments of the present application can be applied to the controller in the partial discharge sensing and transmitting device. Figure 1 As shown in a structural schematic diagram of a partial discharge sensing and transmitting device provided by an embodiment of the present application, Figure 1 The partial discharge sensing and transmitting device is arranged inside the gas chamber of a gas insulated switch, and the partial discharge sensing and transmitting device comprises a wideband antenna, a channel switching component, a partial discharge generating component, a partial discharge detecting component and a controller. The channel switching component is connected with the wideband antenna, the partial discharge generating component, the partial discharge detecting component and the controller respectively.

[0043] For example, the wideband antenna is a radio frequency interface between the partial discharge sensing and transmitting device and the internal space of the gas insulated switch, and is used to receive a calibration pulse signal for partial discharge calibration and transmit the calibration pulse signal. For example, the operating frequency band of the wideband antenna can cover the partial discharge signal frequency range of a typical gas insulated switch, i.e. 300 MHz-3 GHz.

[0044] For example, the channel switching component can be a high-speed radio frequency transceiver switch. The output port of the channel switching component is connected to the wideband antenna, and the two input ports of the channel switching component are connected to the partial discharge generating component and the partial discharge detecting component respectively, so as to form different channels. In addition, the control interface of the channel switching component is also connected with the controller, so as to control the channel switching of the channel switching component by the controller. For example, the channel switching component has a switching speed of nanoseconds and an isolation between ports of greater than 50 dB.

[0045] For example, the controller is used to control the channel switching of the channel switching component under the control of external indication information. The partial discharge generating component can simulate a partial discharge source to generate a calibration pulse signal (i.e. a partial discharge signal), and transmit the calibration pulse signal through the wideband antenna when the corresponding channel is connected. The partial discharge detecting component is used to receive a signal when the corresponding channel is connected, including receiving the calibration pulse signal for partial discharge calibration. The partial discharge detecting component can comprise an ultra high frequency (UHF) sensor, an ultrasonic sensor, etc.

[0046] In an example embodiment, as shown in Figure 2 a partial discharge calibration method is provided. The method is described by taking the controller in the partial discharge sensing and transmitting device in Figure 1 as an example, which comprises S201-S203.

[0047] S201. In response to the first control signal, the partial discharge sensing transmitter is switched from the first state to the second state.

[0048] The first state is the signal receiving state, and the second state is used to simulate sending calibration pulse signals.

[0049] It should be understood that the controller in the partial discharge sensing transmitter can receive external control signals to switch the state of the partial discharge sensing transmitter, thereby putting the partial discharge sensing transmitter in different states and performing different functions.

[0050] For example, the partial discharge sensing transmitting device includes a first state and a second state. The first state is a signal receiving state, and the second state is used to simulate the transmission of a calibration pulse signal. That is, the first state can be the partial discharge detection state of the built-in partial discharge detection component, and the second state can be the calibration pulse signal transmission state of the built-in partial discharge generating component.

[0051] It should be understood that the embodiments of this application do not limit the types of partial discharge detection components and partial discharge generation components. In some embodiments, the partial discharge detection component may include an ultra-high frequency (UHF) sensor, an ultrasonic sensor, etc. The partial discharge generation component may include any emission source that simulates the generation of partial discharge signals, such as a partial discharge instrument.

[0052] In some embodiments, the partial discharge sensing transmitter is in a first state by default, and its built-in partial discharge detection component receives the calibration pulse signal for partial discharge calibration. Subsequently, when a first control signal is sent to the controller from the outside, the partial discharge sensing transmitter switches from the first state to a second state. In the second state, the partial discharge sensing transmitter completes the simulated transmission of the calibration pulse signal.

[0053] It should be understood that the embodiments of this application do not limit how the controller receives the external first control signal. In some embodiments, the controller is connected to a channel switching component, and the channel switching component is connected to a broadband antenna, so the controller can receive the external first control signal through the broadband antenna. Alternatively, the first control signal can also be a wired signal.

[0054] S202. According to the second state, the control channel switching component is switched from the partial discharge detection path to the partial discharge generation path.

[0055] In this step, the controller can switch the channel switching component from the partial discharge detection path to the partial discharge generation path according to the second state.

[0056] The channel switching component may include a high-speed radio frequency transceiver switch.

[0057] It should be understood that, due to the different components connected to the input ports of the channel switching component, the state switching of the partial discharge sensing transmitting device can be achieved through the channel switching performed by the channel switching component. That is, through the switching of the channel switching component, the partial discharge detection component is connected to the broadband antenna in the partial discharge detection path, and the partial discharge generation component is connected to the broadband antenna in the partial discharge generation path.

[0058] For example, in the first state, the partial discharge sensing transmitter receives a signal, at which time the partial discharge detection component in the partial discharge sensing transmitter needs to operate. Accordingly, the channel switching component switches to the partial discharge detection path, in which the partial discharge detection component is connected to the broadband antenna.

[0059] For example, in the second state, the partial discharge sensing transmitter simulates sending a calibration pulse signal. At this time, the partial discharge generation component in the partial discharge sensing transmitter needs to operate. Accordingly, the channel switching component switches to the partial discharge generation path, in which the partial discharge generation component is connected to the broadband antenna.

[0060] S203, control the partial discharge generation component to simulate sending calibration pulse signals.

[0061] In this step, when the controller switches the control channel switching component from the partial discharge detection path to the partial discharge generation path according to the second state, it can control the partial discharge generation component to simulate sending a calibration pulse signal.

[0062] The calibration pulse signal is transmitted through a broadband antenna and is used for the online calibration of the partial discharge detection component.

[0063] For example, when switching to the partial discharge detection path, the partial discharge detection component in other partial discharge sensing transmitters can receive a calibration pulse signal simulated by the partial discharge generation component. Based on the data from the received calibration pulse signal, the partial discharge detection component can be calibrated online, including verifying the partial discharge detection function and calibrating parameters. In other words, this partial discharge sensing transmitter assists other partial discharge sensing transmitters in completing the online calibration of their partial discharge detection components by sending calibration pulse signals.

[0064] It should be understood that after switching to the partial discharge generation path, the channel switching component can also switch back to the partial discharge detection path.

[0065] In some embodiments, when the partial discharge generating component completes the transmission of the calibration pulse signal, the controller can control the channel switching component to switch from the partial discharge generating path to the partial discharge detection path. That is, when the controller detects that the partial discharge generating component has completed the transmission of the calibration pulse signal, it automatically controls the channel switching component to switch back to the partial discharge detection path.

[0066] In other embodiments, after the partial discharge generation component simulates sending a calibration pulse signal, in response to a second control signal, the controller can control the channel switching component to switch from the partial discharge generation path to the partial discharge detection path based on a first state. That is, the controller triggers the channel switching component to switch from the partial discharge generation path to the partial discharge detection path based on external second switching indication information.

[0067] The second control signal is used to instruct the partial discharge sensing transmitter to switch from the second state to the first state.

[0068] For example, when the controller receives an external second control signal or is in the default state, the control channel switching component switches to the partial discharge detection path. At this time, the broadband antenna is connected to the partial discharge detection component, and the overall device is a general-purpose built-in partial discharge detection component.

[0069] In some embodiments, after the control channel switching component switches from the partial discharge generation path to the partial discharge detection path, the control partial discharge detection component receives the calibration pulse signal for partial discharge calibration sent by other partial discharge sensing transmitting devices.

[0070] For example, the partial discharge generation component in other partial discharge sensing transmitters can send a calibration pulse signal for partial discharge calibration when switching to the partial discharge generation path. The partial discharge detection component in this partial discharge sensing transmitter, when switching to the partial discharge detection path, can receive calibration pulse signals for partial discharge calibration sent by other partial discharge sensing transmitters, and thus perform verification and parameter calibration of the partial discharge detection function based on the data from the received calibration pulse signals. That is, with the assistance of calibration pulse signals sent by other partial discharge sensing transmitters, this partial discharge sensing transmitter completes the online calibration of its partial discharge detection component.

[0071] For example, after the control partial discharge detection component receives the calibration pulse signal for partial discharge calibration sent by other partial discharge sensing transmitters, the controller can send the waveform information of the calibration pulse signal for partial discharge calibration sent by other partial discharge sensing transmitters to the calibration device, so that the calibration device can determine the performance indicators of the partial discharge detection component based on the waveform information.

[0072] For example, a gas-insulated switch is equipped with N partial discharge (PD) sensing transmitters. When the gas-insulated switch is energized, the first PD sensing transmitter is switched to its second state. At this time, the remaining N-1 PD sensing transmitters will be in their first state. These remaining N-1 PD sensing transmitters send the waveform information of the calibration pulse signals for PD calibration to a calibration device. The calibration device analyzes the calibration pulse signals received by these N-1 PD sensing transmitters using appropriate analysis algorithms to determine whether the PD sensing transmitters are in normal working condition and to measure the corresponding performance indicators. Furthermore, switching multiple PD sensing transmitters to their second state can test their ability to isolate and identify multiple faults.

[0073] In some embodiments, the controller can receive polling control information from the partial discharge sensing transmitters. This polling control information instructs the controller to switch multiple partial discharge sensing transmitters to a second state while maintaining unpolled partial discharge sensing transmitters in a first state. The polling control information includes polling order information for the multiple partial discharge sensing transmitters. Subsequently, at the switching time node corresponding to the polling order information, the controller switches the control channel switching component from a partial discharge detection path to a partial discharge generation path.

[0074] For example, a gas-insulated switch is equipped with N partial discharge sensing transmitters. When the gas-insulated switch is energized, the N partial discharge sensing transmitters are sequentially switched to a second state through polling, while the remaining transmitters remain in the first state. This cross-transmission and reception method can be used to establish a high-precision digital twin model of the gas-insulated switch and to verify partial discharge location algorithms.

[0075] The partial discharge calibration method provided in this application embodiment, in response to a first control signal, switches the partial discharge sensing and transmitting device from a first state to a second state. The first state is a signal receiving state, and the second state is used to simulate the transmission of calibration pulse signals. According to the second state, the control channel switching component switches from a partial discharge detection path to a partial discharge generation path. In the partial discharge detection path, the partial discharge detection component is connected to the broadband antenna; in the partial discharge generation path, the partial discharge generation component is connected to the broadband antenna. The control of the partial discharge generation component simulates the transmission of calibration pulse signals, which are transmitted through the broadband antenna and used for online calibration of the partial discharge detection component. Because the partial discharge sensing and transmitting device is set in the position of the partial discharge detection component built into the gas-insulated switch, and the channel switching component in the partial discharge sensing and transmitting device switches between the partial discharge generation component and the partial discharge detection component, the partial discharge sensing and transmission are integrated. This eliminates the need to place and remove the partial discharge instrument inside the gas-insulated switch during partial discharge calibration, achieving online calibration. Consequently, the calibration results can reflect the performance of the partial discharge detection component under actual operating conditions of the gas-insulated switch, improving the accuracy of partial discharge calibration.

[0076] The following explains the channel switching of the partial discharge sensing transmission equipment. Figure 3 This is a flowchart illustrating another partial discharge calibration method provided in an embodiment of this application. This partial discharge calibration method is applied to the controller in the aforementioned partial discharge sensing transmitting device, such as... Figure 3 As shown, the partial discharge calibration method includes S301 to S306:

[0077] S301. In response to the first control signal, the partial discharge sensing transmitter is switched from the first state to the second state. The first state is the signal receiving state, and the second state is used to simulate the transmission of calibration pulse signals.

[0078] S302. According to the second state, the control channel switching component is switched from the partial discharge detection path to the partial discharge generation path. In the partial discharge detection path, the partial discharge detection component is connected to the broadband antenna, and in the partial discharge generation path, the partial discharge generation component is connected to the broadband antenna.

[0079] S303, the control partial discharge generation component simulates the transmission of calibration pulse signals. The calibration pulse signals are transmitted through a broadband antenna and are used for the online calibration of the partial discharge detection component.

[0080] S304. When the partial discharge generation component completes the transmission of the calibration pulse signal, the control channel switching component switches from the partial discharge generation path to the partial discharge detection path.

[0081] S305, the control partial discharge detection component receives calibration pulse signals for partial discharge calibration sent by other partial discharge sensing transmitters.

[0082] S306. Send the waveform information of the calibration pulse signal for partial discharge calibration sent by other partial discharge sensing transmitting devices to the calibration device so that the calibration device can determine the performance indicators of the partial discharge detection component based on the waveform information.

[0083] Figure 4 This is a flowchart illustrating another partial discharge calibration method provided in an embodiment of this application. This partial discharge calibration method is applied to the controller in the aforementioned partial discharge sensing and transmitting equipment, such as... Figure 4 As shown, the partial discharge calibration method includes S401 to S407:

[0084] S401. In response to the first control signal, the partial discharge sensing transmitter is switched from the first state to the second state. The first state is the signal receiving state, and the second state is used to simulate the transmission of calibration pulse signals.

[0085] S402. According to the second state, the control channel switching component is switched from the partial discharge detection path to the partial discharge generation path. In the partial discharge detection path, the partial discharge detection component is connected to the broadband antenna, and in the partial discharge generation path, the partial discharge generation component is connected to the broadband antenna.

[0086] S403, the control partial discharge generation component simulates the transmission of calibration pulse signals. The calibration pulse signals are transmitted through a broadband antenna and are used for the online calibration of the partial discharge detection component.

[0087] S404. In response to the second control signal, the partial discharge sensing transmitter is switched from the second state to the first state.

[0088] S405. According to the first state, the control channel switching component switches from the partial discharge generation path to the partial discharge detection path.

[0089] S406, The control partial discharge detection component receives calibration pulse signals for partial discharge calibration sent by other partial discharge sensing and transmitting devices.

[0090] S407. Send the waveform information of the calibration pulse signal for partial discharge calibration sent by other partial discharge sensing transmitting devices to the calibration device so that the calibration device can determine the performance indicators of the partial discharge detection component based on the waveform information.

[0091] The partial discharge calibration method provided in this application can perform real-time online calibration while the gas-insulated switch is energized, and can instantly test the performance and status of the partial discharge sensing transmitter. Furthermore, by simulating a partial discharge signal source under real-world conditions, it significantly improves the quality of signal samples, thereby enhancing the accuracy of the digital twin model and the partial discharge localization algorithm.

[0092] The partial discharge calibration method provided in this application embodiment, in response to a first control signal, switches the partial discharge sensing and transmitting device from a first state to a second state. The first state is a signal receiving state, and the second state is used to simulate the transmission of calibration pulse signals. According to the second state, the control channel switching component switches from a partial discharge detection path to a partial discharge generation path. In the partial discharge detection path, the partial discharge detection component is connected to the broadband antenna; in the partial discharge generation path, the partial discharge generation component is connected to the broadband antenna. The control of the partial discharge generation component simulates the transmission of calibration pulse signals, which are transmitted through the broadband antenna and used for online calibration of the partial discharge detection component. Because the partial discharge sensing and transmitting device is set in the position of the partial discharge detection component built into the gas-insulated switch, and the channel switching component in the partial discharge sensing and transmitting device switches between the partial discharge generation component and the partial discharge detection component, the partial discharge sensing and transmission are integrated. This eliminates the need to place and remove the partial discharge instrument inside the gas-insulated switch during partial discharge calibration, achieving online calibration. Consequently, the calibration results can reflect the performance of the partial discharge detection component under actual operating conditions of the gas-insulated switch, improving the accuracy of partial discharge calibration.

[0093] It should be understood that although the steps in the flowcharts of the above embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the above embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0094] Based on the same inventive concept, this application also provides a partial discharge calibration device for implementing the partial discharge calibration method described above. The solution provided by this device is similar to the implementation described in the above method; therefore, the specific limitations in one or more partial discharge calibration device embodiments provided below can be found in the limitations of the partial discharge calibration method described above, and will not be repeated here.

[0095] In one exemplary embodiment, such as Figure 5 As shown, a partial discharge calibration device 500 is provided, which is applied to the controller in a partial discharge sensing and transmitting device. The partial discharge sensing and transmitting device is installed inside the gas chamber of a gas-insulated switch. The partial discharge sensing and transmitting device also includes a broadband antenna, a channel switching component, a partial discharge generating component, and a partial discharge detection component. The channel switching component is connected to the broadband antenna, the partial discharge generating component, the partial discharge detection component, and the controller, respectively.

[0096] The local discharge calibration device 500 includes: a switching module 501 and a control module 502, wherein:

[0097] The switching module 501 is used to switch the partial discharge sensing transmitter from a first state to a second state in response to a first control signal. The first state is a signal receiving state, and the second state is used to simulate the transmission of calibration pulse signals. According to the second state, the control channel switching component is switched from a partial discharge detection path to a partial discharge generation path. In the partial discharge detection path, the partial discharge detection component is connected to the broadband antenna, and in the partial discharge generation path, the partial discharge generation component is connected to the broadband antenna.

[0098] The control module 502 is used to control the partial discharge generation component to simulate and send calibration pulse signals. The calibration pulse signals are sent through a broadband antenna and are used for online calibration of the partial discharge detection component.

[0099] In some embodiments, the switching module 501 is further configured to control the channel switching component to switch from the partial discharge generation path to the partial discharge detection path when the partial discharge generation component completes the transmission of the calibration pulse signal.

[0100] In some embodiments, the switching module 501 is further configured to switch the partial discharge sensing transmitter from a second state to a first state in response to a second control signal; and according to the first state, the control channel switching component switches from a partial discharge generation path to a partial discharge detection path.

[0101] In some embodiments, the control module 502 is further configured to control the partial discharge detection component to receive calibration pulse signals for partial discharge calibration sent by other partial discharge sensing transmitters.

[0102] In some embodiments, the control module 502 is further configured to send waveform information of the calibration pulse signal for partial discharge calibration sent by other partial discharge sensing transmitting devices to the calibration device, so that the calibration device can determine the performance indicators of the partial discharge detection component based on the waveform information.

[0103] In some embodiments, the control module 502 is further configured to receive polling control information from the partial discharge sensing transmitter. The polling control information is used to instruct the multiple partial discharge sensing transmitters to be switched to a second state and the un-polled partial discharge sensing transmitters to remain in a first state. The polling control information includes polling order information of the multiple partial discharge sensing transmitters. At the switching time node corresponding to the polling order information, the control channel switching component switches from the partial discharge detection path to the partial discharge generation path.

[0104] Each module in the aforementioned partial discharge calibration device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of a computer device in hardware form or independent of it, or stored in the memory of a computer device in software form, so that the processor can call and execute the operations corresponding to each module.

[0105] In one exemplary embodiment, a computer device is provided, which may be a terminal amplifier sensing transmitter, and its internal structure diagram may be as follows. Figure 6 As shown, the computer device includes a processor, memory, input / output interface, communication interface, display unit, and input device. The processor, memory, and input / output interface are connected via a system bus, and the communication interface, display unit, and input device are also connected to the system bus via the input / output interface. The processor provides computational and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The input / output interface is used for exchanging information between the processor and external devices. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, mobile cellular networks, Near Field Communication (NFC), or other technologies. When executed by the processor, the computer program implements a partial discharge calibration method.

[0106] Those skilled in the art will understand that Figure 6 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0107] In an exemplary embodiment, a partial discharge sensing transmitter is provided. The partial discharge sensing transmitter is disposed inside the gas chamber of a gas-insulated switch. The partial discharge sensing transmitter also includes a broadband antenna, a channel switching component, a partial discharge generating component, and a partial discharge detection component. The channel switching component is connected to the broadband antenna, the partial discharge generating component, the partial discharge detection component, and a controller, respectively. The controller is configured to perform the above-described partial discharge calibration method.

[0108] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the partial discharge calibration method described above.

[0109] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the partial discharge calibration method described above.

[0110] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, artificial intelligence (AI) processors, etc., and are not limited to these.

[0111] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0112] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A partial discharge calibration method, characterized in that, A controller is used in a partial discharge sensing transmitter, the partial discharge sensing transmitter being disposed inside the gas chamber of a gas-insulated switch. The partial discharge sensing transmitter further includes a broadband antenna, a channel switching component, a partial discharge generating component, and a partial discharge detection component; the channel switching component is connected to the broadband antenna, the partial discharge generating component, the partial discharge detection component, and the controller, respectively; the method includes: In response to a first control signal, the partial discharge sensing transmitting device is switched from a first state to a second state. The first state is a signal receiving state, and the second state is used to simulate the transmission of calibration pulse signals. According to the second state, the channel switching component is controlled to switch from the partial discharge detection path to the partial discharge generation path. In the partial discharge detection path, the partial discharge detection component is connected to the broadband antenna, and in the partial discharge generation path, the partial discharge generation component is connected to the broadband antenna. The partial discharge generation component is controlled to simulate the transmission of a calibration pulse signal, which is transmitted through the broadband antenna and is used for the online calibration of the partial discharge detection component.

2. The method according to claim 1, characterized in that, After controlling the partial discharge generation component to simulate sending a calibration pulse signal, the method further includes: When the partial discharge generating component completes the transmission of the calibration pulse signal, the channel switching component is controlled to switch from the partial discharge generating path to the partial discharge detection path.

3. The method according to claim 1, characterized in that, After controlling the partial discharge generation component to simulate sending a calibration pulse signal, the method further includes: In response to the second control signal, the partial discharge sensing transmitter is switched from the second state to the first state; Based on the first state, the channel switching component is controlled to switch from the partial discharge generation path to the partial discharge detection path.

4. The method according to claim 2 or 3, characterized in that, After controlling the channel switching component to switch from a partial discharge generation path to a partial discharge detection path, the method further includes: The partial discharge detection component is controlled to receive calibration pulse signals for partial discharge calibration sent by other partial discharge sensing and transmitting devices.

5. The method according to claim 4, characterized in that, After the partial discharge detection component receives the calibration pulse signal for partial discharge calibration sent by other partial discharge sensing transmitting devices, the following steps are included: The waveform information of the calibration pulse signal for partial discharge calibration sent by the other partial discharge sensing transmitting device is sent to the calibration device so that the calibration device can determine the performance index of the partial discharge detection component based on the waveform information.

6. The method according to claim 1, characterized in that, The method further includes: The system receives polling control information from the partial discharge sensing transmitter. The polling control information is used to instruct multiple partial discharge sensing transmitters to switch to the second state and keep the unpolled partial discharge sensing transmitters in the first state. The polling control information includes polling order information of the multiple partial discharge sensing transmitters. At the switching time node corresponding to the polling sequence information, the channel switching component is controlled to switch from the partial discharge detection path to the partial discharge generation path.

7. A partial discharge calibration device, characterized in that, A controller is used in a partial discharge sensing and transmitting device, the partial discharge sensing and transmitting device being disposed inside the gas chamber of a gas-insulated switch. The partial discharge sensing and transmitting device further includes a broadband antenna, a channel switching component, a partial discharge generating component, and a partial discharge detection component; the channel switching component is connected to the broadband antenna, the partial discharge generating component, the partial discharge detection component, and the controller, respectively; the device includes: A switching module is used to switch the partial discharge sensing transmitting device from a first state to a second state in response to a first control signal. The first state is a signal receiving state, and the second state is used to simulate the transmission of calibration pulse signals. According to the second state, the channel switching component is controlled to switch from a partial discharge detection path to a partial discharge generation path. In the partial discharge detection path, the partial discharge detection component is connected to the broadband antenna, and in the partial discharge generation path, the partial discharge generation component is connected to the broadband antenna. The control module is used to control the partial discharge generation component to simulate and send calibration pulse signals. The calibration pulse signals are sent through the broadband antenna and are used for online calibration of the partial discharge detection component.

8. A partial discharge sensing transmitting device, characterized in that, The partial discharge sensing and transmitting device is disposed inside the gas chamber of the gas-insulated switch. The partial discharge sensing and transmitting device further includes a broadband antenna, a channel switching component, a partial discharge generating component, and a partial discharge detection component. The channel switching component is connected to the broadband antenna, the partial discharge generating component, the partial discharge detection component, and the controller, respectively. The controller is configured to perform the partial discharge calibration method according to any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 6.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 6.

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