Integrative and Quantitative Calculation of Reliability for Relay Protection System
Gui Cun-bing · Dianli xitong zidonghua · 2007
Two evaluation indices of reliability of relay protection system are presented. The influencing factors of system reliability are classified. The mathematical models for software, hardware and human reliability analysis are established respectively to form the state space diagram of the digital protection system. Markov process is applied to separately calculate the integrative failure rate and usability value of a protection system under the circumstances with and without standby. A case study is conducted to demonstrate the feasibility of the proposed indices and models.