Life prediction method of relay protection device based on could model and Markov Chain

被引：0

作者：

Chen H. ^{[1
]}

Yang J. ^{[1
]}

Shi Y. ^{[2
]}

Yue B. ^{[2
]}

Li R. ^{[2
]}

机构：

[1] School of Electrical Engineering, Wuhan University, Wuhan

[2] Yuxi Power Supply Bureau of Yunnan Power Grid Limited Liability Company, Yuxi

来源：

Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2019年 / 47卷 / 16期

基金：

中国国家自然科学基金;

关键词：

Cloud model; Life prediction; Markov chain; Relay protection device; Reliability criteria;

D O I：

10.19783/j.cnki.pspc.181063

中图分类号：

学科分类号：

摘要：

Predicting the effective life of relay protection devices accurately is the essential to ensure the safe and stable operation of smart substations. This paper proposes a life prediction method based on cloud model and Markov chain. This method utilizes the operating status data of the relay protection device and combines with the membership function of the cloud model to construct the initial state probability distribution vector. Then the state transition probability matrix is obtained according to the Markov chain principle. Finally, the effective life of the protection device is predicted according to the reliability criterion. The example analysis results show that this method can effectively predict the effective life of the protection device and can also provide guidance for the state maintenance work of the relay protection device in the smart substation. © 2019, Power System Protection and Control Press. All right reserved.

引用

页码：94 / 100

页数：6

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