继电保护系统可靠性的区间分析方法  

Interval Analysis Method of Protection System Reliability

作　　者：肖飞[1] 吕飞鹏[1] 张向亮[1] 张新峰[1] 

机构地区：[1]四川大学电气信息学院,成都610065

出　　处：《电力系统及其自动化学报》2012年第6期152-156,共5页Proceedings of the CSU-EPSA

摘　　要：针对继电保护系统可靠性原始数据的不确定性,提出采用区间数值的方法来对原始数据进行修正的方法。同时分析造成保护失效的各个因素,建立了一个新的可靠性模型。结合提出的可靠性模型,对保护系统进行区间评估。由于区间值结果包涵了不确定的风险因素,因此得到的结果更科学、更符合实际。最后的算例对所提方法进行了验证,说明了该方法的有效性。Considering the uncertainty of reliability data in the relay system, the interval numerical methods to amend the original data is proposed in this paper. At the same time, the paper analyzes various factors indu- cing protection failure and establishes a new model of reliability. Combining with the reliability of the proposed model, the interval assessment of the protection system is carried out. Because the interval-valued results in- clude the uncertainty of risk factors, the results are more scientific and more practical. The final example of the proposed method is verified, which indicates the effectiveness of the method.

关 键 词：继电保护 参数不确定 可靠性 区间分析 马尔科夫法 

分 类 号：TM77[电气工程—电力系统及自动化]