Generator accident reinforced excitation circuit

Abstract

The invention relates to a generator accident reinforced excitation circuit, wherein the secondary side of an excitation transformer is a duplex winding which is respectively connected with a first rectifier and a second rectifier; the first rectifier is connected with a first diode and a rotor winding in series; the second rectifier is connected with a second diode and the rotor winding in series; one end of the rotor winding is connected with the anode of the first diode, and the other end of the rotor winding is connected with the cathode of the second diode; and a thyristor switch is connected between the cathode of the first diode and the anode of the second diode. By the structure innovation of the excitation main circuit, the invention completely optimizes the function features of the system, improves the parameter performance under an normal operation condition, achieves the purposes of high safety of 99.99%, high efficiency, energy saving, consumption reduction, and the like during long-term operation of an excitation system, reduces the cost of high-parameter excitation configuration, is favorable for safe operation for a long term, and ensures sufficient supply of accident reinforced excitation to generators.

Description

technical field [0001] The invention relates to an accident forced excitation circuit of a synchronous generator, which belongs to the field of excitation systems of static rectifiers of large and medium-sized synchronous generators. Background technique [0002] Traditional generator static rectifier excitation circuit has a series of disadvantages such as high parameter configuration, low equipment utilization rate, large operating loss, high overvoltage during thyristor commutation, and the actual emergency excitation capacity provided for generators is difficult to meet the design requirements. Contents of the invention [0003] The purpose of the present invention is to provide a forced excitation circuit to solve the problems of high excitation circuit parameter configuration, low equipment utilization rate, large operating loss, high commutation overvoltage and other problems in the prior art. By optimizing the structure of the excitation system, the rectified power ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a forced excitation circuit to solve the problems of high excitation circuit parameter configuration, low equipment utilization rate, large operating loss, high commutation overvoltage and other problems in the prior art. By optimizing the structure of the excitation system, the rectified power supply can be realized Flexible conversion of parallel operation and series forced excitation

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