摘要
目前大多数文献都是研究继电保护本身的可靠性,很少有研究一次设备可靠性对继电保护系统可用度的影响。本文首先介绍了可靠性的评价指标可用度、故障率和修复率,在考虑继电保护系统自检功能的基础上,引入状态检修,对一次设备及其保护系统建立Markov模型,利用状态空间法计算了继电保护的稳态可用度。经Matlab仿真找出保护系统可用度A分别和一次设备可靠性、保护系统可靠性之间的关系曲线,对比得出了保护系统可用度受其自身可靠性影响大于一次设备的结论。
So far, most of the literature is on the research about the reliability of relay protection system, and little on the research about the effect of the first equipment reliability on the relay protection system availability. This paper first introduces the evaluation indices of reliability, availability, failure rate and repair rate, then based on considering the self-checking function of the relay protection system, introducing the state overhaul. The Markov model of the first equipment and protection system is established, and then the state space method is used to calculate the steady-state availability of relay protection. Through MATLAB simulation to find the relationship curve between protection system availability and the first equipment reliability. Generalize a conclusion that the protection system availability is effected more by itself’s reliability than the first device’s.
出处
《电气技术》
2014年第10期27-31,共5页
Electrical Engineering
关键词
继电保护
一次设备
可靠性
状态检修
马尔科夫模型
relay protection
first equipment
reliability
the state overhaul
markov model
