Anti-Misoperation Electric Device of Electrified Railway Catenary Isolation Switch

Abstract

The invention provides an electric device for preventing misoperation of an electrified railway catenary isolating switch, which includes a power-providing motor and a speed reducer. The component restricts its continuous rotation and sends a position signal to the electric operating mechanism; the power output end of the reducer is provided with a switch mechanism through the screw, and the switch mechanism is actuated by the rotation of the screw driven by the reducer until the reducer reaches the limit angle. , the transfer switch mechanism simultaneously initiates the closing of the opening circuit breaker and the opening of the closing circuit breaker, or simultaneously initiates the closing of the closing circuit breaker and the opening of the opening circuit breaker. The invention realizes forward and reverse rotation of the motor by changing the positive and negative poles of the DC motor power supply, and can automatically cut off the motor power supply after opening and closing, thus effectively solving problems such as false operation, refusal to operate, and false display of the isolating switch. The invention is suitable for cooperating with the existing isolating switch to realize the anti-misoperation electric control of opening and closing.

Description

technical field [0001] The invention belongs to the field of electrical switches, in particular to an electric device for preventing misoperation of an electrified railway catenary isolating switch. Background technique [0002] At present, my country's electrified railway has exceeded 70,000km, and a large number of electric isolating switches with remote control function are used on the electrified railway catenary to change the operation mode or realize system rescue under fault conditions. [0003] Most of the electric operating mechanisms of existing domestic isolating switches use electrical components such as contactors and relays to realize the forward and reverse switching of the motor. The remote control terminal (RTU) sends an opening and closing command to trigger the electric operating mechanism with a narrow pulse. The electric operating mechanism is equipped with a self-holding circuit, and the action is automatically completed. However, the remote control te...

AI Technical Summary

Problems solved by technology

However, the remote control terminal will be interfered by various electromagnetic waves in the environment during actual work, so it will issue wrong instructions, resulting in misoperation, refusal to operate, and misdisplay of the circuit breaker, making the railway catenary power supply and distribution system a potential safety hazard

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