Method and device for monitoring status of rotating diode of magnetizing exciter

Abstract

The embodiment of the invention discloses a method for monitoring the status of a rotating diode of a magnetizing exciter, which comprises the following steps of: collecting a rotating diode signal and a phase discrimination pulse signal of the magnetizing exciter; and analyzing the collected rotating diode signal and the collected phase discrimination pulse signal to determine the status of the rotating diode. The embodiment of the invention also discloses a device for monitoring the status of the rotating diode of the magnetizing exciter. The method and the device are used for monitoring the status of the rotating diode in a rotating rectifier, so that the failed rotating diode can be treated in time, and the normal operation of the magnetizing exciter is ensured.

Description

technical field [0001] The invention relates to the technical field of generators, in particular to a method and device for monitoring the state of a rotating diode of an exciter. Background technique [0002] The exciter, that is, the excitation generator, generally adopts three-phase alternating current, and uses a rotating rectifier with a three-phase bridge rectification structure for current rectification to provide the DC current required for power generation. A rotary rectifier with a three-phase bridge rectification structure applied to an exciter, which includes rectifiers with positive and negative pole rings, and each phase of each pole ring of the rectifier is equipped with multiple diodes, and each phase Multiple diodes are connected in parallel and evenly distributed on the rectification ring. [0003] See figure 1 , is the structural schematic diagram of the existing exciter; wherein, 1 is the connection line, 2 is the diode assembly in the rotating rectifie...

AI Technical Summary

Problems solved by technology

When the rated power of the exciter is running, the DC current provided by the rotating rectifier must meet a certain value. Once there is a short circuit or breakdown of the diode on the rectifier, the fuse is blown or the diode itself is disconnected. The rectifier branch is disconnected phenomenon, it will inevitably lead to an increase in the current of other branches or diode branches connected in parallel with it. If the increase in current exceeds the fuse capacity of the insurance, it will cause other branches to withdraw from operation, thereby affecting the normal operation of the exciter, or even Cause damage to the equipment connected to the exciter

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