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System and method for testing performance of fuse of ring main unit

A technology of test system and test method, which is applied in the direction of fuse test, instrument, measuring electricity, etc., can solve the problem of no test method, etc.

Inactive Publication Date: 2014-01-08
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, after the fuse is activated, there is no reliable test method for whether the circuit breaker can reliably operate and the operating time.

Method used

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  • System and method for testing performance of fuse of ring main unit

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Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and through specific embodiments. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

[0021] A system for testing the performance of a fuse in a ring network cabinet, including a ring network cabinet 1, a trip unit, a simulated fuse 3, a timer, and a circuit continuity test device. The release is connected with an analog fuse, and a fuse needle 2 is installed at one end of the analog fuse. The loop continuity tester is connected to the stop terminal of the timer.

[0022] The above-mentioned test method steps for the ring main unit fuse performance test system are:

[0023] (1) Act on the simulated fuse to make the fuse pop out from the release;

[0024] (2) Simultaneously when the fuse needle pops out from the release, the simulated fuse sends a timing command to the timer;

[002...

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Abstract

The invention relates to a system and a method for testing performance of a fuse of a ring main unit. The system comprises the ring main unit, a releaser, a simulated fuse, a timer and a circuit conduction testing device, wherein a circuit breaker is internally arranged in the ring main unit, the ring main unit is connected with the simulated fuse through the releaser, a triggering end of the timer is arranged at the other end of the simulated fuse, and a cable outlet of the ring main unit is connected with a stopping end of the timer through the circuit conduction testing device. According to the system and the method for testing the performance of the fuse of the ring main unit, which is disclosed by the invention, before the ring main unit comes into use, the off state of the circuit breaker and the time between the disconnection of the fuse and the disconnection of the circuit breaker are tested by combining the simulated fuse and the circuit conduction testing device, so that the safety performance of the ring main unit after the ring main unit is provided with the fuse is comprehensively tested.

Description

technical field [0001] The invention belongs to the field of grid equipment state monitoring, in particular to a performance test system and a test method for a ring main unit fuse. Background technique [0002] At present, in the 10kV system, the application of the ring main unit is very extensive. The load change of 10kV line is more complicated, and the fuse has become one of the important protection means of the ring main unit. However, after the fuse is activated, there is no reliable test method for whether the circuit breaker can reliably operate and what the operating time is. [0003] After retrieval, a patent document related to the content of this patent application was found. The Chinese patent with the publication number CN202305728U provides a test bench for detecting the fusing characteristics of automotive circuit fuses for automotive special components testing. It consists of a current regulating circuit, The detection circuit is composed of a detection ci...

Claims

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Application Information

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IPC IPC(8): G01R31/07G01R31/74
Inventor 姚瑛陈荣孙成董艳唯李雪孙昭
Owner STATE GRID CORP OF CHINA
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