The Allocation Of Loss Settlement Surplus Based On Imputation Components Of Branch's Dissipation Power

With the development of the electricity market, the locational marginal price has achieved good results in today's electricity market. According to the standard electricity market model, the locational marginal price will gradually replace uniform clearing price. As a result of the use of short-term marginal cost pricing approach, the node marginal pricing will lead to a surplus of the market-clearing, it is imperative that market participants should allocation this surplus. This problem needs to be solved urgently in the theory of the electricity market and engineering. On the basis of power system and economics theory, the paper makes a further discussion on the theoretical issues of electricity market loss surplus sharing.The research status concerning electricity market surplus at home and abroad is introduced firstly, and then the root reasons of the surplus is expatiated based on the pricing theory. In order to obtain the locational marginal price (LMP), current best predictor-corrector primal-dual interior point algorithm is used to calculate optimal power flow model. Through the analysis of the Lagrange multipliers in the economics meaning, the LMP is decomposed into three parts: the system energy price, the marginal loss price and the congestion price. By using the decomposition of the LMP, the loss surplus is obtained naturally. On the basis of power dissipation theory and the real power flow, the system network loss is apportioned to each transmission whatsoever bilateral trade or pool trade, and then according to the distinction of marginal loss and average loss, the market clear loss surplus is apportioned by each transaction.According to the methods suggested in this paper, IEEE-9 and IEEE-14 bus etc system is simulated by Matlab program. In view of the current surplus loss-sharing used in the PJM electricity market in the United States, There is a contrast about the two arithmetic. The results show that the loss surplus is allocated fair and efficiently, and it also reflects the economic incentive information to the operator by a simple calculation and easy application.