The Pricing Research On Reactive Power Of Ancillary Service In Power Market

Competitive procurement of reactive power support services is rapidly becoming a reality for deregulated electricity markets. It has resulted in a great need to quantify the value of reactive power support from var sources.This paper presents research results on the development of new concepts and schemes for equitable reactive power support valuation. Performance characteristics of the proposed method are determined and practical application issues are addressed.The validity of the method is verified through sensitivity studies. This work emphasizes that the valuation of reactive power support services should be based on their contributions to system security and stability.From this view, we set up the model of capacity pricing and the structure of Var capacity market. The dynamic Var is equally treated for its value. So we also analyse their operation costs and the structure of Var market.Finally we analyse our destination power system with this model, the contribution factors of each Var equipment are worked out and arranged . The costs of each Var operation have been calculated ,too.