Application of an Online Evaluation Method for Operating Health Status of Auxiliary Equipment in Coal-fired Power Plants

被引：0
|
作者：
Wang X. [1 ]
Zhu X. [1 ]
Chen H. [1 ]
Sheng K. [1 ]
He H. [1 ]
Wang Z. [1 ]
机构：
[1] Hunan Province Key Laboratory of High Efficiency & Clean Thermal Power Technology, State Grid Hunan Electric Power Company Research Institute, Changsha
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2022年 / 42卷 / 07期
关键词：
Auxiliary equipment; Coal-fired power plant; Feature vector; Online evaluation; Operation; Wide load peak regulation;
D O I：
10.13334/j.0258-8013.pcsee.210434
中图分类号：
学科分类号：
摘要：
Strengthening online evaluation and precaution on the health status of the auxiliary equipment is important to the safety operation of the wide load peak regulation coal-fired power units. Based on the analysis of the operating characteristics of auxiliary equipment, i.e. forced draft fan, induced draft fan and steam feed-water pump, an online evaluation method for operating health status of auxiliary equipment was presented. The parameter abnormal variation supervisory method was used to prejudge the trend of parameters that independently affect the equipment. The eigenvector analogy analysis method was used to evaluate whether the operating parameters of the equipment mismatch with each other from the systematical angle. After that, a comprehensive conclusion about the health status of the equipment was provided. The application result in a 630MW power unit showed that the parameter abnormal variation supervisory method successfully recognized that a bearing temperature of the forced draft fan fluctuated in a large amplitude and warning, which reminded the operators to take prevention measures and avoids equipment trip. The power unit historical data of the induced draft fans stall condition was used to conduct test and the result showed that the feature vector analogy method was able to issue parameter mismatch warning at the moment that the equipment works abnormally, which saved time for the operators at accident conditions, avoiding the accident to deteriorate. © 2022 Chin. Soc. for Elec. Eng.
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页码：2597 / 2605
页数：8
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