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《Electric Power Automation Equipment》 2008-02
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Turbine steam wetness measurement based on cavity perturbation method

ZHANG Shue,WANG Hongyun,KANG Lina(North China Electric Power University,Baoding 071003,China)  
Steam wetness has great influence on the safety and efficiency of steam turbine.A wetness measurement system based on cavity perturbation method is designed for precise measuring,including automatic frequency tracing system and equal precision frequency measurement system.Test shows that,the automatic frequency tracing system can detect the frequency shift of kilohertz from the basal frequency of 9.6 GHz;the equal precision frequency measurement system has the resolution of 10-7 at the standard frequency of 10 MHz;and the measurement precision is 0.1 ~ 1 Hz for signal frequency of 1 ~ 10 MHz.
【Fund】: 国家自然科学基金项目(50676031)~~
【CateGory Index】: TP274
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