Voltage-reactive power double-layer optimization method and device for coordinating CVR regulation equipment and inverter

• Main Authors: SUN SHENGBO, ZHANG RAN, RAO YAO, XIAO SHEN, LE JIAN, LANG HONGKE, GUO WEI, DING SHENG, XU JIANYUN, TAO PENG, SUN ZHICHENG
• Format: Patent
• Language: Chinese; English
• Published: 18.04.2023
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention relates to a voltage-reactive power double-layer optimization method and device for coordinating CVR adjusting equipment and an inverter. The method comprises the following steps that 1, a three-phase power flow model based on branch power flow is established; 2, establishing an approximate three-phase power flow model and a linear three-phase power flow model based on the branch power flow according to the three-phase power flow model of the branch power flow; thirdly, modeling is conducted on a voltage regulator, a capacitor bank, an inverter and a voltage sensitive load; fourthly, setting values of a traditional CVR adjusting device and an inverter are determined through a linearized three-phase power flow model, an upper-layer MILP model is established, the setting value of the inverter is corrected according to the approximate nonlinear optimal power flow model, an approximate optimal feasible solution is obtained, and a lower-layer NLP model is obtained; and solving the upper-layer MILP mo