Partial discharge instrument test tool

Abstract

The utility model provides a partial discharge instrument test tool, and the tool comprises an input module which is used for receiving an external instruction, and transmitting the external instruction to a test module; the first end of the test module is connected with the input module, the second end of the test module is connected with a partial discharge measurement channel of the to-be-tested partial discharge instrument, the third end of the test module is connected with a synchronous phase channel of the to-be-tested partial discharge instrument, and the test module is used for testing the to-be-tested partial discharge instrument based on an external instruction to obtain a test result; and the display module is connected with the output end of the test module and is used for displaying the test result. The partial discharge instrument test tool provided by the utility model is low in operation complexity.

Description

Technical Field

[0001] This application relates to the technical field of partial discharge detector testing, and particularly to a partial discharge detector testing tooling. Background Art

[0002] In the power system, it is often necessary to use a partial discharge detector (hereinafter referred to as a partial discharge detector) to detect partial discharges in insulating components in the power system, so as to timely discover partial discharge phenomena in the power system and avoid insulation damage accidents caused by partial discharges. Therefore, it is necessary to test the accuracy and reliability of the partial discharge detector before using it.

[0003] In traditional technologies, an external test circuit is built by an impedance tester, a signal generator or an oscilloscope to test the partial discharge detector.

[0004] However, the operation complexity of traditional partial discharge detector testing tooling is high. Utility Model Content

[0005] Based on this, it is necessary to provide a partial discharge detector testing tooling with low operation complexity for the above technical problems.

[0006] This application provides a partial discharge detector testing tooling, including:

[0007] An input module, configured to receive an external instruction and send the external instruction to the test module;

[0008] A first end of the test module is connected to the input module, a second end of the test module is connected to the partial discharge measurement channel of the partial discharge detector to be tested, and a third end of the test module is connected to the synchronous phase channel of the partial discharge detector to be tested, and is configured to test the partial discharge detector to be tested based on the external instruction to obtain a test result;

[0009] A display module, connected to the output end of the test module, and configured to display the test result.

[0010] In one embodiment, the test module in the partial discharge detector testing tooling provided includes:

[0011] A test control unit, a first end of the test control unit is connected to the input module, a second end of the test control unit is connected to a first end of the partial discharge test unit, and a third end of the test control unit is connected to a first end of the synchronous test unit;

[0012] A second end of the partial discharge test unit is connected to the partial discharge measurement channel;

[0013] A second end of the synchronous test unit is connected to the synchronous phase channel.

[0014] In one embodiment, the partial discharge test unit in the partial discharge detector testing tooling provided includes:

[0015] Partial discharge interface, connected to the partial discharge measurement channel;

[0016] Switching circuit, the first end of the switching circuit is connected to the partial discharge interface, the second end of the switching circuit is connected to the first end of the first test channel, the third end of the switching circuit is connected to the first end of the second test channel, and the control end of the switching circuit is connected to the output end of the test control unit;

[0017] The second end of the first test channel is connected to the output end of the test control unit;

[0018] The second end of the second test channel is connected to the output end of the test control unit.

[0019] In one embodiment, the first test channel in the partial discharge instrument test tooling provided includes:

[0020] Voltage gain circuit, the first end of the voltage gain circuit is connected to the second end of the switching circuit, the second end of the voltage gain circuit is connected to the first end of the first DAC output circuit, and the third end of the voltage gain circuit is connected to the output end of the test control unit;

[0021] The second end of the first DAC output circuit is connected to the output end of the test control unit.

[0022] In one embodiment, the partial discharge test unit in the partial discharge instrument test tooling provided further includes: a protection circuit, the first end of the protection circuit is connected to the partial discharge interface, and the second end of the protection circuit is connected to the first end of the switching circuit.

[0023] In one embodiment, the synchronous test unit in the partial discharge instrument test tooling provided includes:

[0024] Synchronous interface, connected to the synchronous phase channel;

[0025] Conditioning circuit, the first end of the conditioning circuit is connected to the synchronous interface, and the second end of the conditioning circuit is connected to the first end of the second DAC output circuit;

[0026] The second end of the second DAC output circuit is connected to the output end of the test control unit.

[0027] In one embodiment, the input module in the partial discharge instrument test tooling provided includes: a mode selection button, a data input unit, and a start test button, and the mode selection button, the data input unit, and the start test button are all connected to the test module.

[0028] In one embodiment, the display module in the partial discharge instrument test tooling provided includes:

[0029] Data display unit, connected to the data input unit, for displaying the test parameters input by the data input unit;

[0030] A mode indicating unit, connected to the start test button, is configured to display the test mode corresponding to the current test process.

[0031] In one embodiment, the provided partial discharge instrument test tooling further includes: a storage battery, which is respectively connected to the input module, the test module, and the display module.

[0032] In one embodiment, the provided partial discharge instrument test tooling further includes: a power conversion circuit, connected to the output end of the storage battery, for converting the output voltage of the storage battery into the target voltages required by the input module, the test module, and the display module.

[0033] The above partial discharge instrument test tooling includes: an input module, configured to receive an external instruction and send the external instruction to the test module; a first end of the test module is connected to the input module, a second end of the test module is connected to the partial discharge measurement channel of the partial discharge instrument to be tested, and a third end of the test module is connected to the synchronous phase channel of the partial discharge instrument to be tested, for testing the partial discharge instrument to be tested based on the external instruction to obtain a test result; a display module, connected to the output end of the test module, for displaying the test result. In this application, after connecting the two channels of the partial discharge instrument to be tested to the partial discharge instrument test tooling, testing the partial discharge instrument to be tested according to the external instruction, outputting and displaying the test result can simplify the test operation of the partial discharge instrument to be tested and improve the test efficiency of the partial discharge instrument. Description of the Drawings

[0034] Figure 1 It is a schematic structural diagram of the partial discharge instrument test tooling in one embodiment;

[0035] Figure 2 It is a schematic structural diagram of the partial discharge test unit in one embodiment;

[0036] Figure 3 It is a schematic diagram of the operation interface of the partial discharge instrument test tooling in one embodiment;

[0037] Explanation of the reference numerals in the drawings:

[0038] 100, input module; 110, data input unit; 120, partial discharge start button; 130, synchronous start button; 200, test module; 210, test control unit; 220, partial discharge test unit; 221, partial discharge interface; 222, switching circuit; 223, first test channel; 2231, voltage gain circuit; 2232, first DAC output circuit; 224, second test channel; 225, protection circuit; 230, synchronous test unit; 300, display module; 310, data display unit; 320, partial discharge mode indicator light; 330, synchronous mode indicator light; 340, information bar; 400, partial discharge instrument to be tested; 410, partial discharge measurement channel; 420, synchronous phase channel. Detailed implementation manners

[0039] To make the above objects, features, and advantages of the present application more apparent and understandable, the following provides a detailed description of the specific implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0040] In the description of the present application, it should be understood that if terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings. These are only for convenience in describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0041] In addition, if terms such as "first" and "second" appear, these terms are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0042] In the present application, unless otherwise clearly specified and limited, if terms such as "install", "connect", "couple", "fix", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0043] In this application, unless otherwise clearly specified and defined, when a first feature is described as being "on" or "under" a second feature or the like, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.

[0044] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If present, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0045] The following will Figures 1-3 further elaborate on the embodiments of this application in conjunction with the accompanying drawings.

[0046] Figure 1 The structural schematic diagram of the partial discharge tester test tooling in an embodiment of this application is shown. Refer to Figure 1 , the partial discharge tester test tooling provided by an embodiment of this application includes: an input module 100, configured to receive an external instruction and send the external instruction to the test module 200; a first end of the test module 200 is connected to the input module 100, a second end of the test module 200 is connected to the partial discharge measurement channel 410 of the to-be-tested partial discharge tester 400, a third end of the test module 200 is connected to the synchronization phase channel 420 of the to-be-tested partial discharge tester 400, and is configured to test the to-be-tested partial discharge tester 400 based on the external instruction to obtain a test result; a display module 300, connected to the output end of the test module 200, and is configured to display the test result.

[0047] Among them, the to-be-tested partial discharge tester 400 is a partial discharge detection instrument based on the pulse current method, and the to-be-tested partial discharge tester 400 includes a partial discharge measurement channel 410 and a synchronization phase channel 420.

[0048] Exemplarily, the input module 100 can interact with the outside world and receive test parameters such as the discharge amount, output frequency, and output voltage amplitude set by external staff.

[0049] Among them, the test module 200 configures signals according to an external instruction to obtain a test control signal corresponding to the external instruction, and transmits the test control signal to the partial discharge measurement channel 410 and the synchronous phase channel 420 of the partial discharge instrument 400 to be tested, so as to obtain the test result of the partial discharge instrument 400 to be tested.

[0050] Optionally, the display module 300 is further configured to display the power of the partial discharge instrument test tooling or an abnormal alarm indication.

[0051] For the partial discharge instrument test tooling provided in the above embodiment, after connecting the two channels of the partial discharge instrument 400 to be tested to the partial discharge instrument test tooling, the partial discharge instrument 400 to be tested is tested according to an external instruction, and the test result is output and displayed, which can simplify the test operation of the partial discharge instrument 400 to be tested and improve the test efficiency of the partial discharge instrument.

[0052] Continue to refer to Figure 1 , the test module 200 in the partial discharge instrument test tooling provided in an embodiment of the present application includes: a test control unit 210, a first end of the test control unit 210 is connected to the input module 100, a second end of the test control unit 210 is connected to a first end of the partial discharge test unit 220, and a third end of the test control unit 210 is connected to a first end of the synchronous test unit 230; a second end of the partial discharge test unit 220 is connected to the partial discharge measurement channel of the partial discharge instrument 400 to be tested; a second end of the synchronous test unit 230 is connected to the synchronous phase channel 420 of the partial discharge instrument 400 to be tested.

[0053] Among them, the test control unit 210 receives the external instruction of the input module 100, generates a test control signal according to the external instruction, and transmits it to the partial discharge test unit 220 and the synchronous test unit 230 respectively.

[0054] In a possible implementation, the test control unit 210 may include a Zynq chip, in which a PL (Programmable Logic) device and at least one PS (Processing System) based on an ARM Cortex-A9 processor are integrated. Among them, the PL device may be: a CPLD (Complex Programmable Logic Device) or an FPGA (Field Programmable Gate Array). The test control unit 210 may further include the peripheral circuits of the Zynq chip, such as a storage circuit or a clock circuit. Exemplarily, the storage circuit may include a 32GB TF card (Trans-flash Card) storage circuit or a storage circuit with a DDR3 (Double Data Rate Type 3) memory interface.

[0055] Optionally, the test control unit 210 may also be implemented using an SoC FPGA series, a PolarFire SoC FPGA, or a Sitara processor.

[0056] In this embodiment, the partial discharge tester test tooling uses the test control unit 210 to convert external instructions into control signals acceptable to the partial discharge test unit 220 and the synchronization test unit 230, so as to control the partial discharge test unit 220 and the synchronization test unit 230, which can simplify the external operation of the partial discharge tester test tooling, thereby improving the test efficiency of the partial discharge tester 400 to be tested.

[0057] Figure 2 The structural schematic diagram of the partial discharge test unit 220 in an embodiment of the present application is shown. In combination with Figure 2 As shown, the partial discharge test unit 220 in the partial discharge tester test tooling provided in an embodiment of the present application includes:

[0058] A partial discharge interface 221, connected to the partial discharge measurement channel; a switching circuit 222, the first end of the switching circuit 222 is connected to the partial discharge interface 221, the second end of the switching circuit 222 is connected to the first end of the first test channel 223, the third end of the switching circuit 222 is connected to the first end of the second test channel 224, and the control end of the switching circuit 222 is connected to the output end of the test control unit 210; the second end of the first test channel 223 is connected to the output end of the test control unit 210; the second end of the second test channel 224 is connected to the output end of the test control unit 210.

[0059] Optionally, the partial discharge interface 221 is connected to the partial discharge measurement channel of the partial discharge instrument 400 to be measured through a 50Ω standard coaxial cable.

[0060] In a possible implementation, the switching circuit 222 can be a radio frequency switching circuit 222. According to the radio frequency signal sent by the test control unit 210, the switching circuit 222 can control the partial discharge interface 221 to be connected to the first test channel 223, or control the partial discharge interface 221 to be connected to the second test channel 224.

[0061] In a possible implementation, the first test channel 223 includes a voltage gain circuit 2231. The first end of the voltage gain circuit 2231 is connected to the second end of the switching circuit 222. The second end of the voltage gain circuit 2231 is connected to the first end of the first DAC (Digital-to-Analog Converter) output circuit. The third end of the voltage gain circuit 2231 is connected to the output end of the test control unit 210. The second end of the first DAC output circuit 2232 is connected to the output end of the test control unit 210.

[0062] Among them, the first DAC output circuit 2232 includes a digital-to-analog converter, which converts the test control signal in the form of a digital signal sent by the test control unit 210 into a test wave signal in the form of an analog signal. The voltage gain circuit 2231 performs a discharge amount adjustment process on the test wave signal output by the first DAC output circuit 2232 to obtain a target test wave signal corresponding to the test control signal.

[0063] In a possible implementation, the partial discharge test unit 220 further includes a protection circuit 225. The first end of the protection circuit 225 is connected to the partial discharge interface 221, and the second end of the protection circuit 225 is connected to the first end of the switching circuit 222. Among them, the protection circuit 225 can be an electrostatic discharge protection circuit 225 composed of multiple TVS (Transient Voltage Suppression) diodes. When the partial discharge instrument test tooling is working properly, the protection circuit 225 is in a high impedance state and can be regarded as an open circuit. When a high voltage exceeding the breakdown voltage appears in the partial discharge instrument test tooling, the TVS in the protection circuit 225 quickly changes from a high impedance state to a low resistance state, grounding the instantaneous overcurrent caused by the high voltage, reducing the voltage applied to the partial discharge interface 221 and the partial discharge instrument 400 to be measured, and preventing the partial discharge instrument 400 to be measured from being damaged by the high voltage. When the high voltage disappears, the resistance value of the TVS returns to the high impedance state again, and the partial discharge instrument test tooling can normally test the partial discharge instrument 400 to be measured.

[0064] In the test tooling for the partial discharge detector provided in this embodiment, the test control unit 210 generates a test control signal according to an external instruction, and sends the test control signal to the control end of the switching circuit 222. The switching circuit 222 switches to the state connected to the first test channel 223 according to the test control signal. The first DAC output circuit 2232 and the voltage gain circuit 2231 in the first test channel 223 generate a target test wave signal corresponding to the external instruction according to the test control signal, and transmit the target test wave signal to the partial discharge measurement channel of the to-be-tested partial discharge detector 400 through the partial discharge interface 221, so as to test the partial discharge measurement channel of the partial discharge detector.

[0065] Optionally, the switching circuit 222 switches to the state connected to the second test channel 224 according to the test control signal. The second test channel 224 generates a corresponding impedance according to the test control signal, so as to perform an impedance measurement test on the partial discharge measurement channel of the partial discharge detector. Optionally, the second test channel 224 includes an LCR impedance test circuit.

[0066] Continue to refer to Figure 1 In the synchronous test unit 230 in the test tooling for the partial discharge detector provided in an embodiment of the present application, it includes: a synchronous interface, connected to the synchronous phase channel 420 of the to-be-tested partial discharge detector 400; a conditioning circuit, the first end of the conditioning circuit is connected to the synchronous interface, the second end of the conditioning circuit is connected to the first end of the second DAC output circuit, and the second end of the second DAC output circuit is connected to the output end of the test control unit 210.

[0067] Among them, the test control unit 210 generates a test control signal according to an external control instruction, and sends it to the second DAC output circuit. The second DAC output circuit generates a synchronous wave signal according to the test control signal and transmits it to the conditioning circuit. The conditioning circuit conditions the synchronous wave signal to obtain a target synchronous wave signal. Optionally, the frequency range of the target synchronous wave signal is 1 Hz to 500 Hz, and the amplitude is 2 mVpp to 10 Vpp. The waveform of the target synchronous wave signal can be a sine wave signal.

[0068] Figure 3 shows a schematic diagram of the operation interface of the test tooling for the partial discharge detector in an embodiment of the present application. Refer to Figures 1 to 3 In the input module 100 in the test tooling for the partial discharge detector provided in an embodiment of the present application, it includes: a mode selection button, a data input unit 110, and a start test button.

[0069] Among them, the mode selection button includes a partial discharge test button, an impedance test button, and a synchronous phase test button.

[0070] Optionally, in combination with the above embodiments, the partial discharge test button, the impedance test button, and the start test button are all connected to the test control unit 210. When the partial discharge test button is pressed, the test control unit 210 controls the partial discharge tester test tooling to enter the partial discharge test mode, and the switching circuit 222 switches to be connected to the first test channel 223; when the impedance test button is pressed, the test control unit 210 controls the partial discharge tester test tooling to enter the impedance test mode, and the switching circuit 222 switches to be connected to the second test channel 224; when the synchronous phase test button is pressed, the test control unit 210 controls the partial discharge tester test tooling to enter the synchronous phase test mode, and the synchronous test unit 230 is turned on.

[0071] Optionally, during a single test, only one of the partial discharge test mode and the impedance test mode can be selected for testing; the partial discharge test mode or the impedance test mode can be synchronously measured with the synchronous phase test mode.

[0072] Optionally, the start test button is connected to the test control unit 210, and the start test button includes a partial discharge start button 120 and a synchronous start button 130. In combination with the above embodiments, the partial discharge start button 120 is connected to the first test channel 223. When the switching circuit 222 switches to the first test channel 223 and the partial discharge start button 120 is pressed, the first test channel 223 enters a conducting state and outputs a partial discharge signal; the partial discharge start button 120 is connected to the second test channel 224. When the switching circuit 222 switches to the second test channel 224 and the partial discharge start button 120 is pressed, the second test channel 224 enters a conducting state. The synchronous start button 130 is connected to the synchronous test unit 230. When the synchronous start button 130 is pressed, the synchronous test unit 230 enters a conducting state.

[0073] Optionally, the data input unit 110 includes a plurality of data input boxes for inputting various test parameters during the test. The test parameters include: pulse quantity, discharge quantity, output polarity, waveform, and frequency. In a possible implementation manner, the data input unit 110 is a capacitive touch screen, and the staff can input test parameters to the data input unit 110 through touch operations. Optionally, the test parameters can be input by touching the capacitive touch screen to open the soft keyboard and customizing the input data; the input data can be selected from the preset options by touching the selection box.

[0074] In a possible implementation manner, the display module 300 in the partial discharge tester test tooling includes: a data display unit 310, connected to the data input unit 110, for displaying the test parameters input by the data input unit 110; a mode indication unit, connected to the mode selection button and the start test button, for displaying the test mode corresponding to the current test process.

[0075] Optionally, the data display unit 310 is further used for displaying the test result of the current test process.

[0076] Optionally, the mode indicating unit may be an LED lamp, which is connected in series with the start test button. Among them, the mode indicating unit includes a partial discharge mode indicator lamp 320 and a synchronization mode indicator lamp 330. During the test, when the partial discharge start test button is pressed, the partial discharge mode indicator lamp 320 lights up; when the synchronization start button 130 is pressed, the synchronization mode indicator lamp 330 lights up.

[0077] In the partial discharge tester test tooling provided in this embodiment, when the partial discharge test button is pressed, the partial discharge test mode is entered, and the staff can input the pulse quantity, discharge quantity, output polarity, and waveform through the data input unit 110. Among them, the output polarity can be "+", "-", or "±"; the optional waveforms include "step waveform", "square wave", "user waveform 1", "user waveform 2", and "user waveform 1" and "user waveform 2" refer to the recorded waveforms stored in the memory. When this item is selected, the recorded waveforms will be played; when the partial discharge start button 120 is pressed, the first test channel 223 enters the conducting state and outputs a target test wave signal.

[0078] When the impedance test button is pressed, the impedance test mode is entered, and the staff can input the test frequency through the data input unit 110. The pulse quantity, discharge quantity, output polarity, and waveform are displayed in the data display unit 310 with preset data and applied to the test process. When the partial discharge start button 120 is pressed, the second test channel 224 enters the conducting state. The data input unit 110, start test button, and data display unit 310 in the partial discharge test mode and the impedance test mode are multiplexed.

[0079] When the synchronization phase test button is pressed, the synchronization phase test mode is entered, and the staff can input the synchronization frequency, voltage amplitude, and voltage offset value through the data input unit 110. When the synchronization start button 130 is pressed, the synchronization test unit 230 enters the conducting state and outputs a target synchronization wave signal.

[0080] In this embodiment, by observing and comparing the display data of the to-be-tested partial discharge instrument 400 in each test mode with the display data of the data display unit 310 of the partial discharge tester test tooling, the measurement state of the to-be-tested partial discharge instrument 400 is determined.

[0081] In a possible implementation manner, the input module 100 can be used to adjust the test parameters, perform impedance test, sensitivity test, or linearity test on the partial discharge measurement channel 410 of the to-be-tested partial discharge instrument 400; perform synchronization phase frequency test or voltage amplitude test on the synchronization phase channel 420 of the to-be-tested partial discharge instrument 400.

[0082] In a possible implementation, the display module 300 in the partial discharge tester test tooling further includes: an information bar 340 for displaying company information, software version, and system time.

[0083] Continue to refer to Figure 1 , a partial discharge tester test tooling provided by an embodiment of the present application further includes a storage battery, and the storage battery is respectively connected to the input module 100, the test module 200, and the display module 300 for supplying power to the input module 100, the test module 200, and the display module 300. Optionally, the storage battery is a rechargeable lithium battery.

[0084] In a possible implementation, the partial discharge tester test tooling further includes a power conversion circuit. The first end of the power conversion circuit is connected to the output end of the storage battery, and the second end of the power conversion circuit is respectively connected to the input module 100, the test module 200, and the display module 300 for converting the output voltage of the storage battery into the target voltage required for the connection of the input module 100, the test module 200, and the display module 300.

[0085] Refer to Figures 1 to 3 , a partial discharge tester test tooling provided by an embodiment of the present application includes:

[0086] An input module 100 for receiving an external instruction and sending the external instruction to the test module 200. The input module 100 includes: a mode selection button, a data input unit 110, and a start test button, and the mode selection button, the data input unit 110, and the start test button are all connected to the test module 200.

[0087] A test module 200 includes: a test control unit 210. The first end of the test control unit 210 is connected to the input module 100, the second end of the test control unit 210 is connected to the first end of the partial discharge test unit 220, and the third end of the test control unit 210 is connected to the first end of the synchronous test unit 230;

[0088] The partial discharge test unit 220 includes: a partial discharge interface 221 connected to the partial discharge measurement channel; a protection circuit 225, the first end of the protection circuit 225 is connected to the partial discharge interface 221, and the second end of the protection circuit 225 is connected to the first end of the switching circuit 222; a switching circuit 222, the first end of the switching circuit 222 is connected to the partial discharge interface 221, the second end of the switching circuit 222 is connected to the first end of the first test channel 223, the third end of the switching circuit 222 is connected to the first end of the second test channel 224, the control end of the switching circuit 222 is connected to the output end of the test control unit 210, and the second end of the second test channel 224 is connected to the output end of the test control unit 210.

[0089] The first test channel 223 includes: a voltage gain circuit 2231, a first end of the voltage gain circuit 2231 is connected to a second end of the switching circuit 222, a second end of the voltage gain circuit 2231 is connected to a first end of the first DAC output circuit 2232, and a third end of the voltage gain circuit 2231 is connected to an output end of the test control unit 210; a second end of the first DAC output circuit 2232 is connected to the output end of the test control unit 210.

[0090] The synchronous test unit 230 includes: a synchronous interface connected to the synchronous phase channel 420; a conditioning circuit, a first end of the conditioning circuit is connected to the synchronous interface, and a second end of the conditioning circuit is connected to a first end of the second DAC output circuit; a second end of the second DAC output circuit is connected to the output end of the test control unit 210.

[0091] The display module 300 is connected to an output end of the test module 200 for displaying test results. The display module 300 includes: a data display unit 310 connected to the data input unit 110 for displaying test parameters input by the data input unit 110; a mode indication unit connected to the start test button for indicating the test mode corresponding to the current test process.

[0092] The storage battery is respectively connected to the input module 100, the test module 200, and the display module 300.

[0093] The power conversion circuit is connected to an output end of the storage battery for converting the output voltage of the storage battery into the target voltage required by the input module 100, the test module 200, and the display module 300.

[0094] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, 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, it should be considered as the scope recorded in this specification.

[0095] The above embodiments only represent several implementation manners of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A partial discharge instrument test tool, characterized in that: The partial discharge instrument test tooling includes: An input module, used for receiving external instructions and sending the external instructions to the test module; The first end of the test module is connected to the input module, the second end of the test module is connected to the partial discharge measurement channel of the partial discharge instrument to be tested, and the third end of the test module is connected to the synchronous phase channel of the partial discharge instrument to be tested, so as to test the partial discharge instrument to be tested based on the external instruction and obtain the test result; A display module is connected to the output end of the test module and is used to display the test result.

2. The partial discharge instrument test fixture according to claim 1, characterized in that: The test modules include: A test control unit, wherein a first end of the test control unit is connected to the input module, a second end of the test control unit is connected to a first end of a partial discharge test unit, and a third end of the test control unit is connected to a first end of a synchronization test unit; The second end of the partial discharge test unit is connected to the partial discharge measurement channel; The second end of the synchronization test unit is connected to the synchronization phase channel.

3. The partial discharge instrument test fixture according to claim 2, characterized in that: The partial discharge test unit comprises: A partial discharge interface connected to the partial discharge measurement channel; A switching circuit, wherein a first end of the switching circuit is connected to the partial discharge interface, a second end of the switching circuit is connected to a first end of a first test channel, a third end of the switching circuit is connected to a first end of a second test channel, and a control end of the switching circuit is connected to an output end of the test control unit; The second end of the first test channel is connected to the output end of the test control unit; The second end of the second test channel is connected to the output end of the test control unit.

4. The partial discharge instrument test fixture according to claim 3, characterized in that: The first test channel comprises: a voltage gain circuit, wherein a first end of the voltage gain circuit is connected to a second end of the switching circuit, a second end of the voltage gain circuit is connected to a first end of the first DAC output circuit, and a third end of the voltage gain circuit is connected to an output end of the test control unit; The second end of the first DAC output circuit is connected to the output end of the test control unit.

5. The partial discharge instrument testing tool according to claim 3, characterized in that: The partial discharge test unit further includes: a protection circuit, a first end of the protection circuit is connected to the partial discharge interface, and a second end of the protection circuit is connected to the first end of the switching circuit.

6. The partial discharge instrument testing tooling according to claim 2, characterized in that: The synchronization test unit comprises: A synchronization interface connected to the synchronization phase channel; A conditioning circuit, wherein a first end of the conditioning circuit is connected to the synchronization interface, and a second end of the conditioning circuit is connected to a first end of a second DAC output circuit; The second end of the second DAC output circuit is connected to the output end of the test control unit.

7. The partial discharge instrument testing tool according to claim 1, characterized in that: The input module comprises: a mode selection button, a data input unit and a start test button, and the mode selection button, the data input unit and the start test button are all connected to the test module.

8. The partial discharge instrument testing tool according to claim 7, characterized in that: The display module comprises: A data display unit, connected to the data input unit, for displaying the test parameters input by the data input unit; The mode indicating unit is connected to the start test button and is used to display the test mode corresponding to the current test process.

9. The partial discharge instrument testing tool according to claim 1, characterized in that: The partial discharge instrument testing tool also includes: a battery, which is respectively connected to the input module, the testing module and the display module.

10. The partial discharge instrument testing tool according to claim 9, characterized in that: The partial discharge instrument test fixture further includes: a power conversion circuit connected to the output end of the battery and used for converting the output voltage of the battery into a target voltage required by an input module, a test module and a display module.

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