| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a fault diagnosis method which does not require time or work without adding excess measuring means or communication means in a photovoltaic power generation system. <P>SOLUTION: A fault diagnosis method calculates first working voltage and first working current (S102) of a solar cell array at normal temperature under a measured amount of solar radiation pb, calculates working temperature Tb of the solar cell array (S103) with the use of the first working voltage and measured second working voltage, calculates third working current (S104) at normal temperature with the use of measured second working current and the working temperature Tb, compares the first working current with the third working current (S106), and calculates the number of solar cell modules having a disconnected wire in the solar cell array based on the comparison result. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
