Centralized on-line test method for operating mechanisms of high-voltage cabinet vacuum circuit breakers in columns

Abstract

The invention relates to a centralized on-line test method for operating mechanisms of high-voltage cabinet vacuum circuit breakers in columns, which comprises the steps of preparing tools; closing aDC screen control bus and a closing bus switch, detaching a circuit of a lower port of the switch, and connecting the positive electrode and the negative electrode of the storage battery by using twowires; connecting a power supply, a knife switch and a slide rheostat in series, and connecting a voltmeter is connected to the output end of the slide rheostat in parallel, wherein the output end ofthe slide rheostat is connected with wires to form an output end positive electrode and an output end negative electrode; switching on, adjusting the display voltage of the voltmeter to a required test voltage value, and switching off; positively connecting the output end to positive terminals of a circuit breaker closing bus and a control bus, and and negatively connecting the output end to negative terminals of the circuit breaker closing bus and the control bus; and performing centralized test on the operating mechanisms of the high-voltage circuit circuits breakers in columns. According tothe invention, on-line and centralized operating mechanism tests can be carried out on the high-voltage cabinet vacuum circuit breakers in columns, the test efficiency can be greatly improved, the operation difficulty is reduced, and the test safety is improved.

Description

technical field [0001] The invention belongs to the technical field of high-voltage vacuum circuit breaker handover operating mechanism tests, and in particular relates to a centralized online test method for operating mechanisms of vacuum circuit breakers in a row of high-voltage cabinets. Background technique [0002] According to GB50150-2016 "Electrical Installation Engineering Electrical Equipment Installation Handover Test Standard", the handover test of the operating mechanism of the high-voltage vacuum circuit breaker is as follows: [0003] (1) Change the operating voltage and operate the circuit breaker. Every time the circuit breaker is operated, it must operate correctly and reliably and meet the product and specification requirements. [0004] (2) The operation test of DC electromagnetic or spring mechanism, the test standard is as follows: [0005] [0006] In the prior art, the operation steps of the opening and closing test of the operating mechanism are ...

AI Technical Summary

Problems solved by technology

[0010] Due to the limited passing capacity of the vacuum switch tester, excessive current may easily cause the equipment to heat up, which may cause the fuse to blow out or damage the instrument coil.

For the sake of safety, the circuit breaker can only be pulled out from the high-voltage cabinet, and each test can only be carried out on a single unit, resulting in the need to adjust the voltage three times for each circuit breaker

After the circuit breaker is pulled out of the warehouse, the line does not form a loop, so the test can only be carried out by clamping the auxiliary short wires to the opening and closing coils. The clip is easy to fall off in the shock, which is very dangerous

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