Dynamic multi-stage transmission network expansion planning

Conventional multi-stage transmission network expansion planning does not consider some dynamic factors, such as the effect of the following load growth in every stage and the swift increase of construction cost. But these dynamic factors are very important in deregulated power system. This paper brings forward the dynamic multi-stage transmission network expansion planning to handle these dynamic factors. The dynamic multi-stage transmission network expansion planning model applies load reschedule according the velocity and acceleration of node load growth, externalizes the new connotation of transmission network proper leading development planning that is advance constructing some circuits due to load level and construction cost swift increase, and adopts chaos particle swarm optimization (CPSO) to solve the planning model. A four-stage-19bus test case shows that the dynamic multi-stage transmission network expansion planning method is feasible and efficient.