华电技术 ›› 2020, Vol. 42 ›› Issue (1): 15-19.

• 专题综述 • 上一篇    下一篇

基于多元状态估计技术和相似性理论的环保岛设备劣化预警方法

  

  1. 中国华电科工集团有限公司,北京〓100070
  • 出版日期:2020-01-25 发布日期:2020-03-20

Prognostic method for SRS equipment deterioration based on multivariate state estimation technology and similarity theory

  1. China Huadian Engineering Corporation Limited,Beijing 100070, China
  • Online:2020-01-25 Published:2020-03-20

摘要: 环保岛关键设备安全高效运行是整个环保岛安全生产的保障。当设备出现劣化时提示生产现场开展设备状态检修,这样不但能够杜绝安全事故,更能节约设备维修费用。提出一种基于多元状态估计技术和相似性理论的环保岛设备劣化预警方法,通过多元状态估计技术建立设备的历史正常状态参数矩阵,应用相似性理论对相关系数进行非线性运算,从而得到设备参数当前状态对应的估计值,计算当下观测值与估计值之间的偏差,如果偏差大于预先设定的阈值,系统发出设备劣化信号,提醒运行人员注意,从而给设备状态检修提供依据。通过在某电厂浆液循环泵上的实际应用,结果表明:基于多元状态估计技术和相似性理论的环保岛设备劣化预警方法可满足浆液循环泵劣化监测需求。

关键词: 浆液循环泵, 多元状态估计技术, 相似性理论, 设备劣化预警, 环保岛

Abstract:

The safe and highefficiency operation of the key equipment in simultaneous removal of multipollutant system (SRS) is the guarantee for the whole system.When the equipment is deteriorating, there will be warning signal of onsite equipment state maintenance. This will not only prevent safety accidents, but also save cost in maintenance. A prognostic method for SRS equipment  failure based on multivariate state estimation technique(MSET) and similarity theory is proposed. MSET is used to establish the historical parameter matrix of the equipment in normal state, and the similarity theory is used to perform a nonlinear operation on the correlation coefficients to estimate the value corresponding to the current state. Comparing the deviation between  the two values above, if the deviation is greater than the preset threshold, the system will send out the degradation signal to remind operators and provide basis for equipment state maintenance. Based on the practical application result of a slurry circulating pump in a power plant,the prognostic method for SRS equipment failure based on multivariate state estimation technology and similarity theory is proved to be feasible for slurry circulating pump deterioration monitoring.

Key words: font-family: "Times New Roman",serif, mso-bidi-font-size: 12.0pt, mso-fareast-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA"> circulating pump, multivariate state estimation technology, similarity theory, equipment deterioration prognostic, SRS