Research of power system maintenance decision-making based on the maintaining equipment set

Electrical equipment reliability model and maintaining equipment set choice are the fundamental of power system risk evaluation. Based on the online monitoring, electrical equipment reliability model is more and more detailed and accurate. However, the research about the maintaining equipment set choice is rough. At present, the decision about the maintaining equipment set choice is converted into the equipment importance assessment model. Different equipment assessment models qualitatively analyze the equipments effects on the system risk from different views. However, they lack the quantitative analysis of system risk. System reliability tracing model realizes the quantitative analysis of electrical equipments' reliability parameters effects on system risk, which avoids equipments importance assessment model' disadvantages. Based on the detailed research of the equipment importance assessment model and system reliability tracing model, unified the state maintenance model, a determined maintenance schedule is developed. The Case study indicated that the proposed technique for determination can improve the efficiency of maintenance effectively and improve system's reliability and economy.