Multi-Objective Reactive Power Compensation Planning Against Voltage Collapse in Competitive Markets

摘要

The reactive power compensation planning includes two parts, one is to select the optimal compensation location, the other is looking for the optimal capacity. In this paper the optimal compensatory nodes are selected by using the left eigenvector of the minimum eigenvalue of the Jacobian and the sensitivity of VAR to reduce the system active power loss, and the optimum compensation capacity are gained by immune algorithm. In the course of solving, a new method for calculating the affinity is put forward. This algorithm is tested in IEEE30 bus system and the result indicates the optimization algorithm is valid to reduce active power loss and enhance the system voltage stability margin.