Research on Risk Assessment and Maintenance Strategy of Relay Protection Device in Intelligent Substation
In order to improve the operation and maintenance efficiency of relay protection devices in intelligent substations,risk theory,utility models,and weighting methods are studied and applied to simulate the risk factors of the devices through Monte Carlo simulation.Combining reliability and economic factors,using multi-objective decision-making to formulate maintenance strategies,and constructing an optimal economic life model based on full lifecycle costs.The results showed that the average error of the research method in calculating the severity and risk value of each equipment was 0.272,and the average annual maintenance cost and time of the research method were 48000 yuan and 8.7 hours,respectively,which were superior to existing maintenance methods and could provide strong support for the reliable operation of the power system.
substationrelay protection devicerisk assessmentfull life cycle costoverhaul
NETL
NSTL
万方数据
