Fault detecting method of nuclear power station rotating rectifier bridge, device thereof and storage medium

Abstract

The invention discloses a fault detecting method of a nuclear power station rotating rectifier bridge, a device thereof and a storage medium. The method is suitable for the rotating rectifier bridge of a nuclear power unit with a brushless excitation system. The method comprises the steps of establishing a simulation model of the rotating rectifier bridge according to the actual parameters of thenuclear power unit; simulating the operation state of the rotating rectifier bridge in a non-fault working condition and a fault working condition according to the simulation model, and correspondingly obtaining a non-fault simulation waveform and a fault simulation waveform; analyzing the non-fault simulation waveform and the fault simulation waveform, and extracting a non-fault harmonic wave characteristic and a fault harmonic wave characteristic; and determining the fault state of the rotating rectifier bridge based on the non-fault harmonic wave characteristic and the fault harmonic wave characteristic. The fault detecting method, the device thereof and the storage medium can detect the fault of the rotating rectifier bridge of the nuclear power unit with the brushless excitation system, thereby supplying analysis basis for safe operation of the brushless excitation system and reducing cost.

Description

technical field [0001] The invention relates to the field of brushless excitation systems of nuclear power units, in particular to a fault detection method, device and computer-readable storage medium for a rotary rectifier bridge of a nuclear power plant. Background technique [0002] The excitation equipment of the brushless excitation system of the nuclear power unit is an important device for the generator to transmit power to the power grid. Its performance will directly affect the safety of the nuclear power unit and the power grid. In recent years, with the increasing use of nuclear power units in nuclear power plants, Excitation equipment failures occur from time to time, leading to serious consequences and huge economic losses to nuclear power plants. [0003] The rotating rectifier bridge of a nuclear power unit is an important part of the brushless excitation system, and it is also the most important link to finally realize the excitation of the rotor. Determine ...

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Problems solved by technology

[0004] However, due to the cancellation of slip rings and brushes in the brushless excitation system, it is very difficult to monitor and protect the diodes of the rotating rectifier bridge. Development of Brush Excitation Technology

The monitoring provided by the existing technology adopts the probe method, but the monitoring results are not ideal, and there are false alarms due to on-site feedback, and its technical principle is subject to the monopoly of foreign parties, which requires high maintenance costs and high costs

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