태양광 발전소 사고상태 식별 방법에 관한 연구

PV renewable energy penetration rate has been sharply increased based on the 3020 government policy. However, most of the pv plant output power is decreased due to the lack of the management tool and skills. IEC 61724-1 suggests PR index to evaluate the pv plant performance. But, PR index have a problem of fault recognition rate because of low value when low irradiation day. This paper present a linear regression method, temperature correction equation, estimation error matrix, clearness index and proposed variable index to classify the fault state of pv power plant.