Special high-low voltage test wire change switch device for electrical test of distribution network equipment

Abstract

The invention relates to a special high-low voltage test wire change switch device for electrical test of distribution network equipment, which comprises a three-phase insulation plug terminal and a change-over switch, the change-over switch comprises a change-over switch body and a pivot structure; the pivot structure is located in the change-over switch body; before testing, after the three-phase insulation plug is inserted into the three-phase insulation socket, the high-voltage side of the tested distribution network equipment is electrically connected with the switching device through the three-phase all-insulation cable; when wiring needs to be switched in a test, the pivot structure is driven by the direct-current driving motor to rotate; during rotation, the three electrode columns are electrically connected with different measuring electrodes, and meanwhile, the pivot circular electrode disc and each layer of fixed contact ring are connected with incoming cable plugs of different testing instruments; the electrode column is electrically connected with different electrical test item detection instrument inlet wires through the measuring electrode and the test instrument inlet wire cable. All test items of special detection of the distribution network can be completed only by performing one-time wiring on high-voltage and low-voltage wiring of the tested equipment and the switching device.

Description

technical field [0001] The invention relates to the technical field of distribution network electrical equipment testing, and more particularly, to a high-low voltage test line changer switch device for electrical testing of distribution network equipment. Background technique [0002] As the state pays more attention to the power loss of residents in the distribution network, and at the same time strengthens the electrical performance inspection of the power distribution equipment purchased by the developers in the community, special inspections on the electrical performance of key equipment such as switch cabinets, cables, and transformers have been carried out. . Taking commonly used transformers and voltage and current transformers as an example, there are 7 field tests involved, including both insulation tests that require high voltage and material property tests that require high current. The wiring of each single test is different. For example, the completion of the ...

AI Technical Summary

Problems solved by technology

In existing technology 2, the tests with the same insulation level and similar wiring methods on the tested equipment are integrated for instrumentation, for example, the content of 7 tests is reduced to 4 items, but it cannot fundamentally solve the cumbersome process of test line change and improper line change For problems that affect the test results, electrical testing cannot truly complete the integrated processing of distribution network testing equipment, realize fully automated management of the test process, and fundamentally get rid of the dependence on professional labor

Represented by existing technologies 1 and 2, the current integration of electrical tests for distribution network equipment is mainly concentrated on the level of instrument integration, and a certain amount of functional integration has been carried out for the involved instruments and main wiring according to high-voltage wiring and low-voltage wiring, reducing the Part of the main wiring, but the integrated device obtained in this way is mainly used for electrical testing and detection in the fixed workshop, so the connection between the integrated device and various instruments still needs to be manually changed, but manual participation in wiring cannot be avoided. The demand is high, and it is impossible to realize the real automation of the whole detection process

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