Open-phase protection device having a function of multi-redundancy intelligent carried charge display and control method of open-phase protection device

Abstract

An open-phase protection device having a function of multi-redundancy intelligent carried charge display comprises an open-phase protector and a protection relay, wherein the open-phase protector comprises a comprehensive unit and two working units, the two working units are independent to each other and have same structure, information exchange between the comprehensive unit and the two working units is performed through dual-computer communication, each working unit comprises a current sampling unit, a processor module, a dynamic driving module, a voltage detection module and a power supply module, and the comprehensive unit comprises a comprehensive processor module, a communication module, a display module and a comprehensive power supply module. The control method comprises the following steps of starting and determining a master control computer and a hot standby computer, wherein the master control computer is used for control working; carrying out acquisition, processing analysis and logic judgment on a current signal; outputting or stopping outputting a driving power supply; and making a decision whether the working units are switched or not according to a voltage detection result of the driving power supply. The open-phase protection device is high in reliability, a basis can be provided for fault analysis, real-time display and warning can be achieved, and the control method of the open-phase protection device is scientific, rigorous and safe.

Description

technical field [0001] The invention relates to a circuit protection device and a control method, in particular to a phase failure protection device and a control method for a multiple redundant intelligent charging quantity display suitable for an AC electric switch machine on a railway line. Background technique [0002] The railway line changes the running path of the train through the turnout, and the equipment that changes the position of the turnout is called a switch machine; according to the difference of the action power supply, it is divided into a DC electric switch machine and an AC electric converter; the AC electric switch machine uses a three-phase motor, When the three-phase power supply loses a phase, the current of the other two phases increases rapidly, causing the winding of the three-phase motor to be burned due to excessive temperature rise. When the phase is broken, the action power supply of the switch machine is cut off in time through the protection...

AI Technical Summary

Problems solved by technology

[0007] 1. Low reliability, when a certain device fails to work normally, it will directly cause the switch to fail to complete the conversion, cause the failure of the driving equipment, affect the driving efficiency, and even cause the railway to be paralyzed;

[0008] 2. There is no power display, no intuitive and effective means of maintenance and prevention;

[0009] 3. Failure analysis basis cannot be provided

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