A device and method for switching the frequency signal wiring of a hydroelectric unit governor in a grid-related test

Abstract

The invention discloses a grid-connected testing frequency signal wiring switching device and method for a hydroelectric generating set speed regulator. The device comprises four wiring terminals and three bipolar switches. Aiming at different speed regulator grid-connected testing projects, the device operates three bipolar switches according to the switching logic, so as to achieve different wiring modes. The device can complete the wiring at a time under the condition that the power of testing equipment is cut off, and does not need to carry out shutdown, wire disassembly and wiring according to the testing conditions, can achieve the wiring compatibility and mutual switching of any testing project of a grid-connected test of the hydroelectric generating set speed regulator under the conditions of no water and water, can simplify the on-site testing wiring, guarantees the safety of wiring, and plays an important role in improving the wiring efficiency of an on-site testing process, avoiding electric shock and guaranteeing the equipment safety of a hydroelectric generating set.

Description

technical field [0001] The invention relates to a test wiring method, in particular to a connection switching device and method for a network-related test frequency signal of a governor of a hydroelectric unit. Background technique [0002] At present, in the process of carrying out the governor network test in various hydropower plants, it is necessary to use the governor comprehensive tester to cooperate with the governor to complete the test. During the anhydrous test, the generator residual voltage signals PT1 and PT2 from the generator terminal voltage transformer are removed, and the frequency terminals S3 and S4 of the speed governor comprehensive tester are connected to the frequency measurement terminals G1 and G2 of the speed governor to adjust the speed. The frequency measuring terminals S1 and S2 of the comprehensive tester of the governor are connected with the frequency measuring terminals G1 and G2 of the governor, the comprehensive tester of the governor send...

AI Technical Summary

Problems solved by technology

[0008] Under the condition of water, the voltage transformer at the generator terminal is 110V AC voltage signal, from Figure 1-Figure 3 It can be seen that there were repeated disconnection and wiring problems during the test, which brought great danger to the personal safety of the test personnel, the safety of the voltage transformer equipment at the speed governor and generator end, and seriously affected the test efficiency and progress.

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