Congestion management based on dynamic zoning and coordinated auctioning method

Abstract

Congestion management of the power market is the key problem to electric power system operation. To improve the performance of the electricity market, the regional electricity market will become a trend of the power market development. Regional electricity market operation is large in scale .The overall calculation for congestion management needs a lot of work and is hard to meet the actual operational requirements. So zoning further congestion management becomes more necessary. In this paper a new method based on the nodal price deviation is proposed which is used to implement the dynamic zoning according to the different system load level. On the basis of the dynamic zoning, the coordinated auctioning method is applied to the regional congestion management through simulation of the IEEE-14 bus system and results are compared with OPF which is not considering economic means. Simulation of examples demonstrates the validity of the proposed method.