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배전계통의 통신 실패로 인한 개폐 설비 오동작을 고려한 신뢰도 분석 방안
신중우,남태양,김재철 한국정보통신설비학회 2019 한국정보통신설비학회 학술대회 Vol.2019 No.08
Traditionally, the reliability of the power distribution system is calculated by considering the failure rate of the section and the outage duration time based on the switch that separates the load section. The on/off operation of the protection facility can be considered in a more advanced manner, but it is generally assumed that the operation of the protection facility is perfect.The power distribution system switch is an opening and shutting facility that does not shut down the fault current and operates after the protection facility operates. Therefore, on/off control through communication after protective equipment operation is important.In this paper, discuss the reliability calculation of the distribution system considering the failure of communication in the power distribution system.
하이브리드 고장률을 이용한 태양광 발전 시스템의 설비 유지보수 시점 결정에 관한 연구
신중우,남태양,윤광훈,문원식,김재철 대한전기학회 2022 전기학회논문지 Vol.71 No.11
Recently, the PV(Photovoltaic) penetration has increased rapidly in Republic of Korea. And quite a lot of PV systems has been installed in small capacity. And the PV systems have difficult to have its own maintenance planning system due to difficulties in securing economic feasibility. Therefore the maintenance planning method for PV systems that can be generally applied are attracting considerable. Although the age replacement policy, one of the traditional RCM(Reliability Centered Maintenance) methodology, is excellent for determining the replacement cycle of facilities. But It evaluates that the facilities as good as new after maintenance. In this paper, the maintenance planning method for PV system facilities based on RCM has been proposed. To evaluate the failure rate after the imperfective maintenance, hybrid model has been applied. In addition, the economic feasibility of maintenance has been compared by considering investment cost and loss of the implementation for preventive maintenance policy.