Photovoltaic power station reactive power optimization and SVG parameter coordinated optimization method considering branch fault probabilistic power flow and voltage stability

• Main Authors: GUI XU, NIE YUANHONG, PAN DONG, LI SHENGHU, XU JIAYIN, LIU HAO, FENG PEIRU, WANG XULI, ZHU ZHENGGAO
• Format: Patent
• Language: Chinese; English
• Published: 14.11.2023
• Subjects: CALCULATING; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; COUNTING; DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES; ELECTRIC DIGITAL DATA PROCESSING; ELECTRICITY; GENERATION; PHYSICS; SYSTEMS FOR STORING ELECTRIC ENERGY; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR

The invention relates to a photovoltaic power station reactive power optimization and SVG parameter coordinated optimization method considering branch fault probabilistic power flow and voltage stability, and the method comprises the steps: changing a network topology structure in consideration of branch faults, carrying out the system probabilistic power flow calculation in consideration of the branch random fault probability through employing a point estimation method and Gram-Charlier series, and obtaining the system probabilistic power flow; solving by adopting an improved particle swarm algorithm to obtain a mechanical switch switched capacitor and SVG locating and sizing result; and solving the photovoltaic inverter and SVG control parameter coordinated optimization model by adopting a genetic algorithm to obtain a PI controller parameter KPP optimal value and a KPI optimal value of the photovoltaic power station and a PI controller parameter KSP optimal value and a KSI optimal value of the SVG. Accordi