Mechanical direct-current circuit-breaker controller

Abstract

The invention discloses a mechanical direct-current circuit-breaker controller. A controller circuit comprises a power supply module, a communication module, a button module, a main control module and a driving module; the driving module is composed of two sub-units including a mechanical switch driving unit and a current conversion loop driving unit; the mechanical switch driving unit is used for controlling charging / discharging switches of separating / closing energy-storage capacitors in a mechanical switch operation mechanism-repulsion mechanism power supply cabinet; the mechanical switch driving unit comprises driving circuits of charging switch IGBTs of a rapid separating capacitor, a slow separating capacitor and a closing capacitor, and driving circuits of discharging switch thyristors of the rapid separating capacitor, the slow separating capacitor and the closing capacitor; and the current conversion loop driving unit is used for controlling a trigger switch of a current conversion loop. The mechanical direct-current circuit-breaker controller disclosed by the invention is simple in structure, small in volume, low in cost and operation power consumption and high in reliability, and has an electromagnetic shielding effect; and thus, multiple control modes, such as local operation and remote communication, can be realized.

Description

technical field [0001] The present invention is mainly applied to the field of DC circuit breakers, and more specifically relates to a mechanical DC circuit breaker controller. Background technique [0002] The large-scale development and utilization of fossil energy has led to many global problems such as resource shortage, environmental pollution, and climate change. The development of renewable clean energy to replace fossil energy will be the general trend. New energy access and other issues indicate the urgency of developing DC power grids, and high-voltage DC circuit breakers have become the main technical bottleneck in the development of DC power grids, and the demand is increasingly urgent. [0003] Among the three mainstream topologies of DC circuit breakers, mechanical DC circuit breakers use "manual zero-crossing" technology to create artificial zero-crossing points for mature and reliable AC interrupters, creating a mature AC breaking environment, with simple str...

AI Technical Summary

Problems solved by technology

[0004] At present, the research and development of DC circuit breakers is still concentrated in the stage of topology research and parameter optimization. There are relatively few researches on high-voltage DC circuit breaker controllers at home and abroad, and it is still unable to fully meet the needs of power systems in the above-mentioned aspects.

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