Analysis on fault of rotary speed control of 300MW unit steam turbine and treatment measures

Huadian Technology ›› 2011, Vol. 33 ›› Issue (9): 50-52.

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Analysis on fault of rotary speed control of 300MW unit steam turbine and treatment measures

LI Xingzhao, SONG Guofeng, CHEN Shuqin, HAI Guangxing

Henan First Thermal Electric Power Construction Company, Zhengzhou 450012, China

Received:1900-01-01 Revised:1900-01-01 Online:2011-09-25 Published:2011-09-25

Abstract

Abstract: In Gongyi Yulian Power Plant, when the 300MW unit turbine was latched on again during its coasting operation after it was shutdown, the opening of the adjust gate was increased suddenly and rapidly; the rotate speed of the turbine was increased sharply; and the overspeed protection of the turbine was acted. The problems mentioned above were analyzed and treated, and favorable effect was obtained.

Key words: digital electro hydraulic control system (DEH), coasting operation after shutdown, PID adjuster, overspeed protection, fault analysis

LI Xingzhao;SONG Guofeng;CHEN Shuqin;HAI Guangxing. Analysis on fault of rotary speed control of 300MW unit steam turbine and treatment measures[J]. Huadian Technology, 2011, 33(9): 50-52.

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Analysis on fault of rotary speed control of 300MW unit steam turbine and treatment measures

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