Research Of Reactive Power Spot Pricing In Power System Based On OPF

The issues of reactive power pricing are closely related to the security and stability of power market operation. The excellent spot price may inspire potential and energy of market deeply. Optimal power flow which has developed to this day has become a necessary implement of analyzing and optimizing for power network. The main work of this paper is reactive power pricing research basing on OPF under the environment of power market.The paper first concludes electricity markets, introduces the reactive power service and its pricing mechanism, reviews and summarizes the reactive power pricing methods inside and outside the country.Following that, this paper continues productions for reactive power spot pricing theory researches in the past decade, and analyzes cost compositions of reactive power service and infections on it under deregulation, and proposes a new model for calculating reactive power prices. To enrich its economic information, the Static Var Compensator (SVC) is added to. Furthermore, to reveal the relationship between the cost of reactive power production and the classical economic dispatch, the Lagrange function for the reactive power price model is built, a spot pricing decomposed detailed and the Lagrange multiplies λ_p,λ_q analyzed totally.In the end, on the test system IEEE-4, numerical simulations for the different load conditions demonstrate the validity of the model proposed. Extensive numerical simulations on the test systems that range in size from 4 to 118 buses show that the prime-dual interior point method (PDIPM) for solving the reactive power price has excellent robustness.