Study On Optimal Model Of Peak And Valley Time Price For Industrial Users In Different Transaction Modes

At present,our country is in the the transition period of power market reform,in some areas of China,the existing electricity market model and the electricity price forming mechanism should still be used,while some areas will continue to promote market-oriented reform of electricity price.For a period of time in the future,the trading modes named as power grid direct electricity purchasing and selling and power grid electricity resaling will exist at the same time in the power market of our country,and continue to affect the interests of the important market participants such as industrial users.Therefore the thesis was studied aimed at industrial users,a peak and valley electricity price optimization model of industrial users was built.The research provides the theoretical support for the electricity price optimization of the industrial users and the development of the guidance policy of the government in the new electricity reform period.This thesis consists of four parts:First,the thesis sorted out the power market modes which determines the modes of electric power trading,analyzed the characteristics of different trading modes and the characteristics of the price of industrial users in each trading mode.The optimization principles of peak valley time price for industrial users under two modes are established respectively.Second,the industrial user demand response function was established using LSSVM under the power grid direct electricity purchasing and selling mode,and the electricity price optimization model within the aim that the minimum peak load and the minimum load difference between peak and valley is established.On the basis of this,the long-term and short term social benefits of the implementation of peak valley electricity price in the electricity sale side are calculated,and within the long term social maximization as the optimization objective,the short-term social maximization as the constraint condition,the optimization model of peak valley time price of electricity generation side is established.Third,the bidding model for industrial users and power generations and the market clearing model under the power grid electricity resaling mode were established.Based on the marginal costs of power generations and the marginal revenue of industrial users,the bidding model for industrial users and power generation enterprises was constructed in accordance with the peak,flat and valley time period.A market clearing model with an optimization goal of maximizing the total social benefits of the parties in the transaction.Then,the dynamic equilibrium model of electricity price is established by using the fuzzy Q algorithm.Finally,in order to meet the requirements of the principle of market stability optimization,a price fluctuation limit was introduced as the constraint condition of market clearing price for each time period,and the optimization model of peak and valley time price for industrial users is constructed.Fourth,the simulation analysis of optimal models of peak and valley electricity price of industrial users under the two modes are analyzed respectively.Under the power grid direct electricity purchasing and selling mode,the optimal peak and valley TOU pricing scheme is obtained under different voltage levels,and the generation peak and valley tou pricing scheme which can make the power generation,the power grid and the users are not damaged in the short term is obtained.Under the power grid electricity resaling mode,the peak and valley TOU market clearing price without price limit is obtained.And the optimal price scheme after the government price optimization is obtained,the total social benefit is calculated.