Residual performance evaluation method for off-grid photovoltaic power station

• Main Authors: WANG YIBO, HOU YANJIAO, YANG ZILONG, WANG ZHE
• Format: Patent
• Language: Chinese; English
• Published: 12.11.2021
• Subjects: CALCULATING; COMPUTING; COUNTING; DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES; PHYSICS; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR

The invention relates to a method for evaluating the residual performance of an off-grid photovoltaic power station, which is used for evaluating the residual generating capacity of the photovoltaic power station by utilizing photovoltaic string output power acquired by a data management terminal. The method comprises the following steps: 1, sorting photovoltaic string output power data acquired by the data management terminal, and eliminating invalid data; 2, selecting original data, dividing the original data into three time periods according to a month, and calculating the average generating capacity of each group of photovoltaic group strings in the three time periods in each month in a certain year; 3, calculating a shielding value of the photovoltaic module, and correcting the data obtained in the step 2 according to the shielding value; 4, respectively calculating the average power generation amount of each power generation unit in three time periods of a certain year; 5, respectively calculating the a