10kV switch

Abstract

The invention provides a 10kV switch, which comprises a first isolating knife-switch, a thyristor valve, a current transformer and a second isolating knife-switch which are sequentially connected, wherein the first isolating knife-switch is connected with a bus; and the second isolating knife-switch is connected with a grounding power supply. The 10kV switch provided by the invention is simple, effective and reliable in structure; the effects of a high opening or closing speed, no arc, no light and no noise in movement are achieved in a form of an all-electronic solid-state switch; the disadvantages of a low movement speed, short mechanical life, high noise and the like are avoided while a traditional mechanical circuit breaker is replaced; faster and more flexible site operation on a substation can be comprehensively achieved; normal operation of the substation is ensured; and the operation efficiency of the substation is improved.

Description

technical field [0001] The invention relates to the field of high-voltage switch cabinets, in particular to a 10kV switch. Background technique [0002] The main function of the switchgear is to open and close, control and protect electrical equipment during the process of power generation, transmission, distribution and power conversion in the power system. The components in the switch cabinet are mainly composed of circuit breakers, disconnectors, load switches, operating mechanisms, transformers and various protection devices. It is mainly suitable for various occasions such as power plants, substations, petrochemicals, metallurgical steel rolling, light industry and textiles, factories and mines, residential quarters, and high-rise buildings. Electronic solid-state switches using thyristor devices as switching elements can replace traditional mechanical switches. Because there are no mechanical moving parts in this type of switch, it is called a solid-state switch. Ac...

AI Technical Summary

Problems solved by technology

[0003] Most of the switches in existing domestic substations adopt the simple stacking mode of the above-mentioned conventional equipment. Although there is almost no loss during operation, the breaking time of the fault current is still li

Images