Research on a Method of Wetness Measurement Based on Resonant Cavity Perturbation for Hydrogen in Generator

摘要：

The wetness of hydrogen is an important monitoring index for hydrogen-cooled generator. Analyzed and compared the common methods and instruments for measuring wetness of hydrogen in generator in this paper. Put forward a new method based on resonant cavity perturbation principle to measure the hydrogen wetness. According to steam state in hydrogen, deduced the equivalent dielectric coefficient expression of moisture and the relation between humidity and resonant frequency offset, designed the testing system for measuring hydrogen humidity on-line. And presented improving measures for measuring accuracy that chose high quality factor model, used low expansion material, and designed the temperature compensation system. The system has important practical meaning with simple structure, proper price, and better accuracy in measuring hydrogen humidity on-line.

关键词： Hydrogen humidity Microwave cavity Perturbation method Testing system On-line measurement

作者: Song-feng TIAN Qian ZHANG Zhong-he HAN Kun YANG

作者单位: MOE’s Key Lab of Condition Monitoring and Control of Power Plant Equipment, North China Electric Power University, 102206, China

会议类型: 国际会议

会议名称: 2007杭州国际动力工程会议(The International Conference on Power Engineering 2007)

会议地点: 杭州

会议语种:英文

在线出版日期: 2007-10-23（万方平台首次上网日期，不代表论文的发表时间）