System for testing turn-to-turn short circuit of rotor winding of automobile turbine generator

Abstract

The invention discloses a system for testing turn-to-turn short circuit of a rotor winding of an automobile turbine generator, which consists of an upper structure and a lower structure in mutual communication connection through Ethernet. The lower structure comprises a magnetic flux detector mounted in a motor and an embedded PC104 data acquisition unit located near a generator, data acquisition is carried out on stimulation signals output by the magnetic flux detector through the data acquisition unit, and the acquired digital signals are transmitted to an upper industrial personal computer through Ethernet; the upper structure of the system comprises an industrial personal computer, a display and a printer, the industrial personal computer controls the data acquisition unit remotely through Ethernet to complete data acquisition and transmission, then analyzes and diagnoses received data, and displays and prints the diagnosis result and acquired waveforms. In the invention, advanced Ethernet communication and embedded PC technology are adopted to realize digital signal-based remote transmission, thus greatly improving the fault diagnosis accuracy and working reliability of the test system on turn-to-turn short circuit of the rotor winding.

Description

technical field [0001] The invention relates to an inter-turn short-circuit test system for a steam turbine generator rotor winding. Background technique [0002] For large turbogenerators, inter-turn short-circuits of the rotor windings may be generated or formed during its manufacture and operation. It will cause harm to the safe operation of the rotor, and even a rotor grounding fault or a rotor burning accident may occur in severe cases. In order to avoid these hazards, the rotor winding must be detected or monitored online during the manufacture and operation of the generator. At present, the detection coil method is the most common detection method at home and abroad. The magnetic flux detector of the detection coil is installed and fixed at a distance of 10-20mm from the surface of the tested rotor (in the case of testing a bare rotor) or on the stator wedge of the generator. When the rotor rotates or the generator is running, the magnetic flux The induced potential...

AI Technical Summary

Problems solved by technology

[0004] The present invention adopts advanced Ethernet communication technology to realize long-distance transmission and remote control based on digital signals, thereby replacing the traditional analog voltage signal transmission mode, and fundamentally solving the interference problems such as signal distortion; The data collector adopts embedded PC technology, which has the advantages of small size, high reliability and long working life.

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