Circuit breaking method for high-speed circuit breaker

Abstract

The present invention discloses a circuit breaking method for a high-speed circuit breaker. A controller and a circuit breaker are integrated so as to form a switch apparatus, and the switch on and off time is controlled within 12ms. From the time point of voltage plunge, the switch controller captures voltage change within 2ms, and determines that a switch instruction can be sent out if necessary. After receiving the switch instruction, the circuit breaker completes switch on and off within 10ms, and a branch with sensitive load is switched to a standby power supply to run continuously. Through adoption of the method, the switch on and off can be carried out within 12ms, and the demand of protecting sensitive load is met. The impact current is low during switch on, and the short circuit current breaking capacity of the circuit breaker is improved during switch off, so that the service life of the circuit breaker is prolonged.

Description

technical field [0001] The invention relates to the technical field of electrical equipment, in particular to a breaking method for a high-speed circuit breaker. Background technique [0002] At present, with the rapid development of the economy, people's demand for energy is increasing day by day. The construction of power distribution facilities such as power plants and substations has made the intelligentization of switchgear an indispensable demand. However, the general switchgear , not only the structure is complicated, but also the running status cannot be displayed in a timely and effective manner, which greatly increases the difficulty of operation. At the same time, the employees do not have a high degree of identification when operating, which is very easy to cause failures, and it is impossible to avoid non-professionals. Proper operation, when the switchgear is working, the temperature and humidity will greatly affect its working performance, and even cause safet...

AI Technical Summary

Problems solved by technology

[0002] At present, with the rapid development of the economy, people's demand for energy is increasing day by day. The construction of power distribution facilities such as power plants and substations has made the intelligentization of switchgear an indispensable demand. However, the general switchgear , not only the structure is complicated, but also the running status cannot be displayed in a timely and effective manner, which greatly increases the difficulty of operation. At the same time, the employees do not have a high degree of identification when operating, which is very easy to cause failures, and it is impossible to avoid non-professionals. Proper operation, when the switchgear is working, the temperature and humidity will greatly affect its working performance, and even cause safety accidents, and the switchgear needs to have a lot of functions, and a large number of devices make it difficult for the switchgear to transfer the working data Once presented, it increases the difficulty of detection and maintenance, so it is difficult to adapt to the current market demand