CN-122017679-A - Multiphase wire core testing method, system, equipment, medium and product

CN122017679ACN 122017679 ACN122017679 ACN 122017679ACN-122017679-A

Abstract

The application provides a multiphase wire core testing method, a multiphase wire core testing system, multiphase wire core testing equipment, multiphase wire core testing media and multiphase wire core products, and relates to the technical field of electric power safety. The method comprises the steps of executing loop parasitic test on each phase line core in a multiphase line core of an access line core testing device to obtain voltage values of corresponding line cores, determining whether target voltage values smaller than or equal to a voltage threshold exist in the voltage values, determining the line core corresponding to the target voltage value as a target line core if the target voltage value exists, executing insulation test on the target line core to obtain an insulation resistance value of the target line core, and determining the target line core with the insulation resistance value smaller than the resistance threshold as a qualified line core. By the method, the efficiency and the accuracy of testing the multiphase wire cores are improved.

Inventors

LIU BO
CHEN YUHONG
Luo Chukun

Assignees

广东电网有限责任公司梅州供电局
广东电网有限责任公司

Dates

Publication Date: 20260512
Application Date: 20260115

Claims (11)

1. The multiphase wire core testing method is characterized by comprising the following steps of: Executing loop parasitic test on each phase line core in the multiphase line cores of the access line core testing device to obtain voltage values of the corresponding line cores; determining whether a target voltage value less than or equal to a voltage threshold exists in the plurality of voltage values; If the voltage value exists, determining a wire core corresponding to the target voltage value as a target wire core; Performing insulation test on the target wire core to obtain an insulation resistance value of the target wire core; And determining the target wire core with the insulation resistance smaller than the resistance threshold as a qualified wire core.
2. The method of claim 1, wherein the loop parasitic test comprises a dc parasitic test and an ac parasitic test, the voltage values comprise a dc voltage value and an ac voltage value, the loop parasitic test is performed on each phase line core of the multi-phase line cores of the access line core test device to obtain a voltage value of a corresponding line core, comprising: The intelligent rocking meter is controlled to execute direct current parasitic test on each phase line core in the multiphase line cores to obtain direct current voltage values of the corresponding line cores, and the intelligent rocking meter is used for executing direct current parasitic test on the accessed line cores; After the direct current parasitic test of the multiphase wire cores is completed, the intelligent rocking meter is controlled to execute the alternating current parasitic test on each phase wire core in the multiphase wire cores to obtain alternating current voltage values of the corresponding wire cores, and the intelligent rocking meter is further used for executing the alternating current parasitic test on the connected wire cores.
3. The method of claim 2, wherein the insulation test comprises a ground insulation test and an interphase insulation test, the insulation resistance comprises a ground insulation resistance and an interphase insulation resistance, the performing the insulation test on the target wire core to obtain the insulation resistance of the target wire core comprises: Controlling the intelligent rocking meter to perform a ground insulation test on the target wire core to obtain a ground insulation resistance value of the target wire core; and controlling the intelligent megger to perform interphase insulation test on the target wire core to obtain the interphase insulation resistance value of the target wire core.
4. A method according to claim 3, wherein the dc parasitics, ac parasitics, insulation to ground or phase to phase insulation tests each comprise the following operations: The intelligent megger is automatically switched to a corresponding test mode, and the following operations are executed by traversing the wire core according to a preset test sequence: controlling the intelligent rocking meter to close a target test channel corresponding to the current test wire core; The intelligent cradle is controlled to apply a preset test excitation signal to a current test wire core through a target test channel so as to obtain a test value of the current test wire core recorded by the intelligent cradle, wherein the test value comprises a direct current voltage value, an alternating current voltage value, the insulation resistance to ground and the inter-phase insulation resistance; And after the test value is obtained, controlling the intelligent megger to disconnect the target test channel.
5. The method according to any one of claims 2to 4, wherein the determining, if any, a core corresponding to the target voltage value as a target core comprises: if the direct current voltage value or the alternating current voltage value is smaller than or equal to the target voltage value of the voltage threshold value in the direct current voltage values and the alternating current voltage values, a wire core corresponding to the target voltage value is determined as a target wire core.
6. The method of any one of claims 1 to 4, further comprising at least one of: outputting the voltage value of each phase of wire cores in the multi-phase wire cores; if a target wire core exists, outputting an insulation resistance value of the target wire core; And if the qualified wire core exists, outputting the voltage value and the insulation resistance value of the qualified wire core.
7. The multiphase wire core testing system is characterized by comprising an intelligent megger and an upper computer, wherein the intelligent megger is connected with the upper computer; the intelligent megger is provided with a multiphase interface for accessing a multiphase wire core; The upper computer is used for executing the multiphase wire core testing method according to any one of claims 1 to 6 so as to test multiphase wire cores accessed by the intelligent megger; The intelligent megger is used for executing loop parasitic test on the connected multiphase wire core under the control of the upper computer to obtain the voltage value of the wire core, and executing insulation test on the connected multiphase wire core under the control of the upper computer to obtain the insulation resistance value of the wire core.
8. The utility model provides a multiphase core testing arrangement which characterized in that includes: the first acquisition module is used for executing loop parasitic test on each phase line core in the multiphase line cores accessed to the line core testing device to obtain voltage values of the corresponding line cores; a first determining module configured to determine whether a target voltage value that is less than or equal to a voltage threshold exists among the plurality of voltage values; The second determining module is used for determining a wire core corresponding to the target voltage value as a target wire core if the wire core exists; the second acquisition module is used for executing insulation test on the target wire core to obtain the insulation resistance value of the target wire core; And the third determining module is used for determining the target wire core with the insulation resistance smaller than the resistance threshold as the qualified wire core.
9. An electronic device is characterized by comprising a memory and a processor; The memory stores computer-executable instructions; The processor executing computer-executable instructions stored in the memory, causing the processor to perform the method of any one of claims 1-6.
10. A computer readable storage medium having stored therein computer executable instructions which when executed are adapted to implement the method of any of claims 1-6.
11. A computer program product comprising a computer program which, when executed, implements the method of any of claims 1-6.

Description

Multiphase wire core testing method, system, equipment, medium and product Technical Field The application relates to the technical field of electric power safety, in particular to a multiphase wire core testing method, a multiphase wire core testing system, multiphase wire core testing equipment, multiphase wire core testing media and multiphase wire core products. Background As the scale of power systems increases and the complexity increases, the secondary loop test requirements of multiphase cores as key components are increasingly prominent. In order to ensure the stable operation of the power system, efficient and accurate parasitic detection and insulation test are performed on the multiphase wire cores, and the method has become a key link for guaranteeing the safety and operation reliability of equipment. At present, multi-phase wire core testing adopts step-by-step manual operation, namely, firstly using a universal meter to detect parasitic voltage of the wire core one by one, and then using an insulation rocking meter to perform insulation testing after no electricity is confirmed. When insulation test operation is carried out, one test clamp of the insulation rocking meter is required to be fixed on a grounding copper bar or a certain reference wire core, and the other test clamp sequentially clamps other wire cores to be tested, so that the insulation resistance between the grounding wire core and the wire cores is measured one by one. In order to ensure the test integrity, operators need to repeatedly switch meters and detect item by item, so that omission is avoided. From this, the above-described method has problems of low efficiency and poor accuracy. Therefore, there is a need for an efficient and accurate automated multiphase core testing scheme. Disclosure of Invention The application provides a multiphase wire core testing method, a multiphase wire core testing system, multiphase wire core testing equipment, multiphase wire core testing medium and multiphase wire core testing products, which are used for improving efficiency and accuracy of multiphase wire core testing. In a first aspect, the present application provides a method for testing a multiphase core, including: Executing loop parasitic test on each phase line core in the multiphase line cores of the access line core testing device to obtain voltage values of the corresponding line cores; determining whether a target voltage value less than or equal to a voltage threshold exists in the plurality of voltage values; If the voltage value exists, determining a wire core corresponding to the target voltage value as a target wire core; Performing insulation test on the target wire core to obtain an insulation resistance value of the target wire core; And determining the target wire core with the insulation resistance smaller than the resistance threshold as the qualified wire core. In one possible embodiment, the loop parasitic test includes a dc parasitic test and an ac parasitic test, the voltage values include a dc voltage value and an ac voltage value, the loop parasitic test is performed on each phase line core in the multi-phase line cores of the access line core test device, and a voltage value of a corresponding line core is obtained, including: The intelligent cradle is controlled to execute direct current parasitic test on each phase line core in the multiphase line cores to obtain direct current voltage values of the corresponding line cores, and the intelligent cradle is used for executing direct current parasitic test on the connected line cores; After the direct current parasitic test of the multiphase wire cores is completed, the intelligent cradle is controlled to execute the alternating current parasitic test on each phase wire core in the multiphase wire cores to obtain the alternating current voltage value of the corresponding wire core, and the intelligent cradle is also used for executing the alternating current parasitic test on the connected wire cores. In one possible embodiment, the insulation test includes a ground insulation test and an interphase insulation test, the insulation resistance includes a ground insulation resistance and an interphase insulation resistance, the insulation test is performed on the target wire core to obtain an insulation resistance of the target wire core, including: Controlling the intelligent rocking meter to perform a ground insulation test on the target wire core to obtain a ground insulation resistance value of the target wire core; And controlling the intelligent megger to perform interphase insulation test on the target wire core to obtain the interphase insulation resistance value of the target wire core. In one possible embodiment, the dc parasitics test, the ac parasitics test, the insulation to ground test, or the phase to phase insulation test, all comprise the following operations: The intelligent megger automatically switches to a corresponding test mode, and trave