Multi-slave redundant protection method for generator static excitation device

Abstract

The invention relates to an electric generator static excitation device multi-slave redundancy protection method. A host machine, a standby machine and a slave machine are adopted for realizing redundancy protection, and are connected with one another by adopting a CAN bus; the redundancy protection is characterized by automatically switching to the standby machine or the slave machine when the host machine is failed, and switching to the slave machine only if the standby machine is stayed in a failure state; automatically switching to the host machine or the slave machine when the standby machine is failed, and switching to the slave machine only if the host machine is stayed in a failure state; switching to the host machine or the standby machine from the salve machine only if the host machine or the standby machine is stayed in a non-failure state, otherwise, switching the slave machine to a next stage or ignoring the slave machine. The electric generator static excitation device multi-slave redundancy protection method provided by the invention has the beneficial effects that through a multi-slave redundancy switching mode, a control unit and a power unit are integrated, the simplicity and the convenience in switching are realized, the switching is undisturbed switching, meanwhile, the convenience in maintenance without power failure is realized, and when failure happens, the slave machine can replace the host machine in the same valve position.

Description

technical field [0001] The invention relates to the technical field of generator excitation devices, in particular to a multi-slave redundant protection method for a generator static excitation device. Background technique [0002] In order to reduce the working power of the excitation and ensure the continuous operation of the excitation, the static excitation device of the prior art adopts the master-slave redundant protection mode of the control unit, and the working mode is the parallel connection of the power units. Such a redundant protection method will generate a disturbance during the switching process, which will easily cause the voltage or power of the generator to be unstable, and will also cause a considerable impact on the generator set and damage the power unit of the generator. In addition, the static excitation device in the prior art needs to be powered off before maintenance and replacement, which affects the normal operation of the power grid. Obviously, ...

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Problems solved by technology

[0003] In order to solve the problems of switching difficulties in the multi-slave redundant protection method of the static excitation device of the generator in the prior art, and the switching generates disturbances, and the maintenance without power failure cannot be realized, the present invention proposes a multi-slave redundant protection method for the static excitation device of the generator

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