VFC quick circuit breaker

Abstract

The invention discloses a VFC quick circuit breaker. The VFC quick circuit breaker comprises a silicon controlled rectifier, an energy storage capacitor, a charging power supply, a pull rod, a movable contact, an armature, an opening coil, an eddy current tray and a closing coil, wherein one end of the pull rod is connected with the movable contact; the armature is arranged in the middle of the pull rod; the opening coil, the eddy current tray and the closing coil are arranged at the other end of the pull rod; the eddy current tray is positioned between the opening coil and the closing coil; the opening coil and the closing coil are both connected with the charging power supply through the silicon controlled rectifier separately; and in addition, the opening coil and the closing coil are connected with the charging power supply through one energy storage capacitor separately. By adopting the energy storage capacitor to discharge the opening coil and the closing coil, relatively high discharge current can be output, so that the switch can be opened and closed within 5ms; and in addition, the opening and closing operations are controlled by the silicon controlled rectifier, so that response to a relay protection instruction can be as quick as a microsecond level.

Description

technical field [0001] The invention relates to the technical field of electrical equipment, in particular to a VFC fast 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 safety accidents, and the swi...

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