Research On Differentiated Electricity Selling Strategy Of Multi-Seller Considering New Energy Consumption

With the rapid development of new energy power,the deepening reform of the power system is also gradually advancing in accordance with China ’s relevant policy documents.With the opening of the electricity sales side market,the fierce competition among different qualified electricity sales companies has brought unprecedented market-oriented factors to the development of the power system.How to reasonably consider the market-oriented factors in the whole process from power generation to consumption is a key step for the power market to adapt to the high proportion of new energy.As different qualified power sales companies assume the responsibility of new energy quota consumption,in the face of a large influx of sensitive equipment on the user side,new energy power sales companies should consider market factors to make reasonable sizing.All kinds of power sales companies should make full use of their own advantages to meet the differentiated needs of users,so as to increase market share and promote healthy market competition.Under the background of high proportion of new energy,this paper takes different qualified electricity retailers that bear quota responsibility as the research subject,and studies the fixed capacity of new energy electricity retailers,the differentiated pricing of power quality of multi-sellers and the strategy of purchasing and selling electricity.Firstly,Copula entropy theory is introduced to measure the similarity of output curves in the market,and the market-oriented index of curve similarity is used to guide the reasonable capacity of electricity retailers.Aiming at the problem that the current sizing method does not consider market factors,a market-oriented index of source-load time series similarity is constructed.Using this index,a sizing model of new energy sales company with market characteristics constraints of source-load time series similarity is established,and an example analysis is carried out.Secondly,taking the differentiated demand of power quality as the starting point,and taking the different qualified power selling companies that bear the quota responsibility as the main body,this paper studies the power selling strategies of each company in the power wholesale market and the green certificate trading market.Considering the demands of sensitive users,a user utility model considering differentiated power quality requirements is constructed.According to the characteristics of electricity purchase and sale behavior of electricity selling companies,based on the Cournot market competition,the electricity selling models of different qualified electricity selling companies are established.Finally,the solution idea of the differentiated electricity purchase and sale model of each market subject is given,and the example analysis is carried out.Finally,in order to achieve the goal of maximizing social benefits and promoting healthy competition in the market,the purchase and sale strategies of different qualified electricity retailers considering the time-of-use electricity price mechanism are studied.According to the characteristics of users ’ power consumption period,a peak-valley period division method based on K-means clustering algorithm is proposed.The user utility is introduced into the evaluation of electricity consumption habits,and the differential pricing model of time-of-use electricity price is established.The example analysis is carried out with the goal of maximizing market benefits.