Research On Risk Of Power Sales Companies Under Various Transaction Types

The sales companies participate in the electricity market transactions,and their trading models and trading varieties are very diverse.With the introduction of national policies,the sales companies can participate in medium and long-term trading of electricity,cross-provincial transactions,and spot market transactions.A variety of power trading markets.Its policy basis mainly comes from the National Development and Reform Commission,the National Energy Administration,the State Grid Beijing Power Trading Center,and the Southern Power Grid Guangzhou Power Trading Center.It can be said that the introduction of electricity sales companies into the electricity market is the need of the reform of the times.It is an important measure for the government to introduce competition to break the monopoly.It is a new concept that the state gradually tries to use the market means to change the status quo instead of forcing measures to suppress contradictions.At the same time of extraordinary significance,the business risk of the electricity sales company is also the focus of attention.This paper focuses on the risk issues of power sales companies in the electricity purchase market and electricity sales market and the issue of purchasing and selling power strategies.In the wholesale market,the research includes two types of electricity purchase methods:medium and long-term bilateral contracts and spot market transactions,as well as fixed-price contracts,time-of-use electricity price contracts,and real-time electricity price contracts.Market-Contract power transfer market,judge the risk change and decision change caused by contract electricity transfer transaction.This paper uses conditional risk value method(risk condition value,CVaR)to measure the expected risk loss of trading strategy,and then consider establishing a mathematical model of mixed integer nonlinear programming.Solve.Through the solution results,it can be found that the increase in the proportion of trading in the spot market will increase the risk of electricity purchase and sale of electricity sales companies,but at the same time it will also bring higher returns;companies with stronger risk preference will choose to actively invest in the spot.In the market transactions;the transaction risk of the time-of-use electricity price sales contract is higher than that of the ordinary medium-and long-term electricity sales contract,but the increase in revenue is not significant;there is a difference between the spot market electricity price and the electricity sales company's purchase and sale risk.Negative correlation,the higher the real-time price of electricity,the greater the company's expectation of gains in the market,and the relatively small risk.The trading price of the electricity spot market can be used as the basis for the sales company to judge its own risks and make decisions about purchasing and selling electricity.At the same time,after introducing the contract transfer market,it is found that the introduction of the contract power transfer market can effectively reduce the price risk of the entire power market;the price of the contract power transfer market is often lower than the real-time price of the spot market;The steady development of the entire market.