Controllable electromagnetic tripper and control method capable of realizing short-circuit protection

Abstract

A controllable electromagnetic release that can realize short-circuit protection is characterized in that the system includes a lock, an electromagnet, a current coil, a control coil, a control switch, a detection circuit, a delay circuit, a trigger circuit and a control circuit; One winding realizes short-circuit short-time delay control, that is, the electromagnetic release can complete short-circuit short-time delay protection and short-circuit instantaneous protection, which can greatly improve the reliability of the line, and facilitate the coordination of upper and lower protection characteristics and ZSI control.

Description

technical field The invention relates to a novel electromagnetic tripper, in particular to a control method capable of realizing short-circuit short-time delay and short-circuit instantaneous action. Background technique Since the beginning of the 21st century, especially after the blackout in the United States and Canada in 2003, the Electric Power Research Institute (EPRI) of the United States proposed the IntelliGrid Architecture, which triggered the research and development and construction of smart grids worldwide. Coupled with the active promotion of the governments of various countries, the smart grid has become the focus of the world's attention. The State Grid Corporation of China first announced the smart grid development plan to the public in May 2009, marking that China's smart grid construction has been officially included in the agenda. The construction of smart grid requires intelligent electrical appliances as the basis, and the electric energy generated by ...

AI Technical Summary

Problems solved by technology

Existing control methods have their limitations, and a new control method is needed to achieve short-circuit short-time delay and short-circuit transient protection

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