Device for automatically disconnecting operating power supply of photovoltaic SF6 circuit breaker in case of low gas pressure

Abstract

The invention relates to the technical field of automatic devices, and discloses a device for automatically disconnecting an operating power supply of a photovoltaic SF6 circuit breaker in the case of low gas pressure. The device comprises a device main body, and is characterized in that a solar cell module is arranged at the top of the device main body, heat dissipation grooves are formed in the two sides of the device main body respectively, a microprocessor is arranged on the front surface of the device main body, a storage battery is arranged in the device main body, one side of the storage battery is provided with a motor, one end of the motor is provided with a push rod, a sliding block is arranged at one end of the push rod, a fixed seat is arranged on one side of the sliding block, a guide rail is arranged on the front surface of the fixed seat, an insulating rod is arranged at the top of the sliding block, and the top end of the insulating rod is fixedly connected with a first metal contact. According to the device for automatically disconnecting the operating power supply of the photovoltaic SF6 circuit breaker in the case of low gas pressure, the gas pressure in the photovoltaic SF6 circuit breaker can be monitored in real time through arrangement of an intelligent microprocessor, the device main body is controlled to automatically disconnect the operating power supply, manpower is saved, and through arrangement of the solar power generation mechanism, energy conservation and environmental protection are achieved, and the problem that outdoor power supply is inconvenient is solved.

Description

technical field [0001] The invention relates to the technical field of automatic devices, in particular to a photovoltaic SF6 circuit breaker automatic disconnection operation power supply device when the air pressure is low. Background technique [0002] In power grid operation, SF6 circuit breaker is a circuit breaker that uses sulfur hexafluoride (SF6) gas as arc extinguishing medium and insulating medium. When the SF6 pressure of the SF6 circuit breaker is lower than the blocking value, the dielectric strength and arc extinguishing ability of the SF6 circuit breaker will decrease, which poses a serious threat to the safe operation of the equipment. [0003] Circuit breaker operating circuit, also known as circuit breaker control circuit, its function is to open and close the circuit breaker through the secondary circuit. When the SF6 pressure is lower than the blocking value, according to the "State Grid Corporation of Power Substation Operation and Maintenance Manageme...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention provides a photovoltaic SF6 circuit breaker with low air pressure and automatically disconnects the operating power supply device, which can solve the existing problem that when the SF6 pressure of the SF6 circuit breaker is lower than the blocking value, the power supply company needs to send substation operation and maintenance personnel Going to the site to disconnect the operating power supply of the SF6 circuit breaker consumes manpower and travel time to the substation is a serious problem, and lacks an intelligent automatic disconnection circuit control device, it is impossible to disconnect the operating power supply of the SF6 circuit breaker in time; The intelligent microprocessor can monitor the internal air pressure of the photovoltaic SF6 circuit breaker in real time through the air pressure sensor, and control the main body of the device to automatically disconnect the operating power supply, which saves manpower. Problem, by setting a heat dissipation, dehumidification and dust removal mechanism inside the main body of the device, it can play a good role in protecting the internal components of the main body of the device, effectively prolonging the service life of the main body of the device

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