Exciter fault analysis system and method, storage medium and electronic equipment

Abstract

The invention relates to an exciter fault analysis system and method, a storage medium and electronic equipment, and the system comprises an excitation current collection unit which is used for collecting the excitation current of an excitation loop; the exciting current analysis unit is used for analyzing the exciting current to obtain a harmonic component of the exciting current; the simulation unit is used for performing simulation analysis on the excitation system to obtain preset harmonic waves; and the fault analysis unit is used for comparing the harmonic component with a preset harmonic and analyzing the fault of the exciter according to a comparison result. According to the invention, the excitation current is analyzed, and comparison is carried out according to the preset harmonic wave to determine whether the exciter generates resonance, so that whether the exciter has a fault and the fault reason can be analyzed according to the comparison result, and the excitation system is prevented from damaging equipment due to resonance overvoltage.

Description

technical field [0001] The present invention relates to the technical field of excitation systems of generator sets, and more particularly, to an excitation machine fault analysis system, method, storage medium and electronic equipment. Background technique [0002] Under normal conditions, the excitation power comes from the excitation transformer at the generator end, and is rectified by the AVR three-phase thyristor rectifier bridge and transmitted to the stator pole of the exciter. The rotor of the exciter cuts the magnetic field of the stator pole, thereby generating alternating current. The alternating current is rectified by a rotating rectifier (rotating diode) and supplied to the rotor coil windings of the generator to establish the generator magnetic field. [0003] In order to solve the problem that the strong excitation of the system is affected after the power grid is short-circuited, a 220V DC auxiliary strong excitation power supply is set up in the excitation...

AI Technical Summary

Problems solved by technology

[0007] In view of the above fault problems, in the existing excitation system, when a ground fault occurs in the magnetic pole winding of the exciter, the auxiliary strong excitation circuit composed of the magnetic pole of the exciter, the excitation rectifier, and the battery is likely to generate resonant high voltage, causing the equipment to be broken down and shut down

[0008] The existing excitation system only points out the resonant overvoltage breakdown equipment in the auxiliary powerful circuit according to the on-site fault conditions, but it is unable to carry out mechanism and verification analysis on the resonant overvoltage

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