METHOD TO MONITOR ELECTRIC POWER GENERATION AND DETECT THE TROUBLE OF EACH PHOTOVOLTAIC MODULE

摘要

PURPOSE: A method for determining a malfunction state and monitoring a power generation state of an individual solar cell module is provided to easily perform management and increase the power generation efficiency of a power generation system by remotely diagnosing the malfunction of the individual solar cell module. CONSTITUTION: A voltage of an individual solar cell module is recorded and an error rate about an average voltage is calculated. If the calculated error rate exceeds a reference error rate, the voltage abnormality of the individual solar cell module is determined(603). A current of the individual solar cell module is recorded and an error rate about a current voltage is calculated. If the calculated error rate exceeds a reference error rate, the current abnormality of the individual solar cell module is determined. The voltage abnormality and the current abnormality are consecutively generated for a specific period, the malfunction of the individual solar cell module is determined(605). [Reference numerals] (601) Reading the latest error rate; (602) Is operation standard power abnormal?; (603) Failure diagnosis standard error rates < error rates; (604) Notifying normal operation; (605) Is it arranged to a failure determination period?; (606) Notifying failure detection; (607) Reading previous error rates; (AA) Start; (BB) End