Failure analysis and its treatments of 1000 MW ultra supercritical power unit

Abstract

Abstract:

Abstract:Generator is one of the most important devices in power system and its safety is crucial to ensure the safe and stable operation of power grids.1000 MW ultra supercritical coalfired power unit is currently the largest unitin capacity and its generator is working at a high speed,high temperature,high voltage and large current state.Combining with the reasons of design,manufacture,installation,operation and systemfailure etc,the failures, such as the temperature increasing of generator stator,rotor core and winding,the insulation dropping of winding,the fever ignition of carbon brush,the overload or overvoltage of generator,and interturn short circuit etc.are occurredfrequently.Taking the 1000MW power unit as an example,this paper analyzed its failure reasons from the aspect of electric and proposed specific treatments to avoid or reducethe occurrence of similar failures.

Key words: ">Keywords:">1">000">MW power unit, ultra supercritical power unit, generator unit, failure analysis, treatment

HUANG Yuzhong1, ZHANG Qi2. Failure analysis and its treatments of 1000 MW ultra supercritical power unit[J]. Huadian Technology, 2015, 37(12): 37-40.

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Failure analysis and its treatments of 1000 MW ultra supercritical power unit

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