태양광발전시스템의 PCS에서 이상 온도 제어를 위한 하드웨어개발 = Development of Hardware for Controlling Abnormal Temperature in PCS of Photovoltaic System

다국어 초록 (Multilingual Abstract)

This paper is purposed to develop hardware for controlling abnormal temperature that can occur environment and component itself in PCS. In order to be purpose, the hardware which is four part(sensing, PLC, monitoring and output) keep detecting temperature for critical components of PCS and can control the abnormal temperature. Apply to the hardware, it is selected to PV power generation facilities of 20 ㎾ in Cheong-ju city and measured the data for one year in 2017. Through the temperature data, it is found critical components of four(discharge resistance, DC capacitor, IGBT, DSP board) and entered the setting value for operating the fan. The setting values for operating the fan are up to 130℃ in discharge resistance, 60℃ in DC capacitor, 55℃ in IGBT and DSP board. The hardware is installed at the same PCS(20 ㎾ in Cheong-ju city) in 2018 and the power generation output is analyzed for the five days with the highest atmospheric temperature(Clear day) in July and August in 2017 and 2018 years. Therefore, the power generation output of the PV system with hardware increased up to 4 ㎾h.