Circuit breaker trigger pulse signal output control method and device and circuit breaker system

Abstract

The invention relates to a circuit breaker trigger pulse signal output control method and device and a circuit breaker system. The method includes the steps that after a closing trigger pulse signal is output to a circuit breaker, whether or not an auxiliary contact of the circuit breaker is in a closed state is detected, and if yes, output of the closing trigger pulse signal to the circuit breaker is ended; similarly, after an opening trigger pulse signal is output to the circuit breaker, whether or not the auxiliary contact of the circuit breaker is in an opened state is detected, and if yes, output of the opening trigger pulse signal to the circuit breaker is ended. After the circuit breaker is in the corresponding state, output of the trigger signal is stopped, the trigger signal can right complete the state change of the circuit breaker, it is avoided that the width of the trigger pulse signal does not match the circuit breaker, and therefore opening / closing failure caused by a too small pulse width and unnecessary power waste caused by a too large pulse width are avoided, and the situations that due to long-time power-on, an opening / closing coil of a mechanism is burnt out and a power module of a feeder terminal unit (FTU) is damaged are avoided.

Description

technical field [0001] The invention relates to a circuit breaker trigger pulse signal output control method, device and circuit breaker system. Background technique [0002] The opening and closing of the circuit breaker is controlled by a special control device, such as the feeder terminal FTU. In the traditional method, the control pulse for opening and closing of the circuit breaker is output by the feeder terminal FTU, and the feeder terminal FTU outputs a closing pulse signal to control the closing of the circuit breaker. , output the opening pulse signal to control the opening of the circuit breaker. The width of the opening and closing pulse signal can be adjusted. If the pulse is too narrow, the opening and closing operation will fail; Closing coil, and output for a long time will also damage the power module of the feeder terminal FTU. The circuit breakers produced by different manufacturers have different performances, and even the circuit breakers produced by t...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a circuit breaker trigger pulse signal output control method, which is used to solve the problem that the width of the pulse trigger signal output by the existing pulse width control device may not match the circuit breaker, and the width may be too narrow or too large. wide question

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