A Proposal of the Improved Method for Measuring Insulation Resistance Between a Photovoltaic Module String and the Earth Using the Self‐Biased Method

• Published in: Electrical engineering in Japan Vol. 218; no. 2
• Main Authors: Kazama, Takuro, Kato, Kazuhiko
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc 01.06.2025
• Subjects: DC ground fault; Earth; Electric potential; electrical shock; Insulation; insulation deterioration; insulation resistance measurement method; Leakage current; Measurement methods; Monitoring; Photovoltaic cells; self‐biased method; Strings; unearthed photovoltaic module strings; Voltage

ABSTRACT For the safe operation of a photovoltaic generating system, an insulation monitoring function, which can immediately detect deterioration of insulation between photovoltaic module strings and the earth, is indispensable. This function requires accurate measurement, low leakage current, and...