Generation reactive power optimization based on network analysis

WANG Jing1, ZHAO Jing-bo2, WU Hao1

(1.School of Electrical Engineering, Zhejiang University, Hangzhou 310027, China;

2.Jiangsu Electric Power Corporation Electrical Power Research Institute, Nanjing 211103, China)

Abstract: In order to solve the problem of generation reactive power optimization, a method which has the character of clear concept and brief computation for generation reactive power optimization based on network analysis was proposed. Using the relationship of balance of node power and branch voltage loss, node voltage and branch reactive power flow approximate sensitivity to generation reactive power except slack node and voltage of slack node was established. Through the loss allocation method based on power tracing, power loss to generation node was allocated and generation reactive power optimization nodes was selected. By means of building approximate loss optimization model via branch reactive power and node voltage, the amount of reactive power optimization was computed. The result of IEEE39-bus system verifies the validity of the method. The results indicate that, the distribution of reactive power and voltage level is improved by the optimization method, so it has practical value.