Reliability analysis method for grid-connected photovoltaic inverter

• Main Authors: GAO DELAN, CAO SHANQIAO, SHI RUXIN, CAI QINYI, WANG JUAN
• Format: Patent
• Language: Chinese; English
• Published: 23.09.2022
• 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 discloses a reliability analysis method for a grid-connected photovoltaic inverter, relates to the technical field of photovoltaic power stations, and mainly aims to understand the overall operation condition of a photovoltaic power station by performing normalized evaluation analysis on inverters of all manufacturer models of the photovoltaic power station in a statistical period. According to the main technical scheme, the method comprises the steps that S1, the generating capacity Qi of each grid-connected photovoltaic inverter in a photovoltaic power station is calculated; s2, performing normalization processing on the generating capacity Qi of each grid-connected photovoltaic inverter in the photovoltaic power station, and calculating the utilization hour hi of each grid-connected photovoltaic inverter; s3, calculating an average value mu of utilization hours hi of all grid-connected photovoltaic inverters in the photovoltaic power station in a statistical period; s4, calculating a standard