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Fault detection and processing method of high-voltage vacuum circuit breaker

A technology for vacuum circuit breakers and processing methods, which is applied in the direction of high-voltage air circuit breakers, circuit breaker testing, high-voltage/high-current switches, etc. Problems such as high flow voltage, to reduce the effect of closing bounce

Inactive Publication Date: 2019-05-21
JIANGSU AFX AUTOMATION ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The quality of the early domestically produced high-voltage vacuum circuit breakers was not stable enough, the current-carrying overvoltage was too high during operation, and some vacuum interrupters still had air leakage.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The present invention provides the following technologies including 1) Circuit breaker refusal to close and disengage Check the gaps of all connecting parts of the operating mechanism, and replace unqualified parts with new high-hardness qualified parts.

[0021] 2) Mis-division of the circuit breaker: check all possible leaking points and effectively block them; install a sealing rubber sleeve on the output crank arm linkage; turn on the heating and moisture-dispelling device in the mechanism box.

[0022] 3) After the circuit breaker mechanism stores energy, the energy storage motor does not stop: adjust the installation position of the travel switch so that the normally closed contact of the travel switch can be opened when the rocker arm is at the highest position.

[0023] 4) The DC resistance of the circuit breaker increases: adjust the contact opening distance and overtravel of the arc extinguishing chamber, and the method of measuring the contact resistance can b...

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PUM

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Abstract

The invention discloses a fault analysis and processing method of a high-voltage vacuum circuit breaker. The fault analysis and processing method comprises the steps that (a) the circuit breaker rejects to close and break; (b) the circuit breaker breaks by mistake; (c) an energy storage motor does not stop after energy storage of a circuit breaker mechanism; (d) DC resistance of the circuit breaker is increased; and (f) the closing bounce time of the circuit breaker is increased. By a machine tool fault diagnosis method, the requirements of early failure warning rapidness and diagnosis accuracy of the circuit breaker are met, the accuracy and the reliability of fault diagnosis of the circuit breaker are improved, the shutdown time is reduced, the maintenance cost is effectively reduced, and the production efficiency is improved.

Description

technical field [0001] The invention relates to fault detection of a vacuum circuit breaker, in particular to a fault analysis and processing method for a high-voltage vacuum circuit breaker. Background technique [0002] The superiority of the vacuum circuit breaker is not only oil-free equipment, but also in that it has a long electrical life, mechanical life, large breaking insulation capacity, strong continuous breaking capacity, small size, light weight, frequent operation, The advantages of avoiding fire, less operation and maintenance, etc., were quickly recognized by the operation, maintenance and technical personnel of the power department. The quality of the domestically produced high-voltage vacuum circuit breakers in the early days was not stable enough, and the current-carrying overvoltage was too high during operation, and some vacuum interrupters still had air leakage. Contents of the invention [0003] The purpose of the present invention is to provide a h...

Claims

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Application Information

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IPC IPC(8): H01H33/66H02B3/00G01R31/327
Inventor 不公告发明人
Owner JIANGSU AFX AUTOMATION ENG