Research On The Investment Decision Model Of The Distribution Company Based On The Yardstick Competition Method

Since the launch of "No.9" in 2015,the reform process of Chinese power system has been accelerated,and the rationed sale of electric side reform has been continuously deepened.Increment distribution business reform is an important part of placement of electricity side reforms,but it doesn't have the same case in foreign countries,domestic reform is also at the exploration stage,there is still lack of systematic researches in investment decision-making of incremental distribution business projects.The paper is based on the actual demand,to make the reform of the incremental distribution business smoothly,and is to of great practical significance and academic reference value to advance the reform of the power system.Firstly,this paper introduces the yardstick competition method to study the investment decision problem of incremental distribution network.Yardstick competition method is a means to monitor the electric power enterprise,this article will change it into suitable for the method to solve the problem of incremental distribution network investment,and innovatively puts forward the concept of "virtual model company",and analyzes its organizational structure and the cost in detail.Secondly,the paper analyzes the income of "virtual model company" and studies the key influencing factors of distribution business income.Due to the change of distribution price,users' electricity price will change,which will change the user's power consumption.It is because of this phenomenon,this paper improves the yardstick competition method of distribution pricing by introducing the demand elasticity of users,to remeasure distribution price,in order to reduce the uncertainty of investment planning and forecast.Finally,based on DEA,this paper constructs an incremental distribution network investment decision model.Because it has been considered in the process of power distribution network planning that to assure the power supply safety and power quality,so this paper mainly studies the question of economic benefit,which is the main consideration of an investor.Therefore,according to the characteristics of the DEA method,the paper construct the indicators of investment decision in two aspects,input and output.In this paper,we proposed a yardstick scheme as a comparison standard,to caculate the effectiveness of the different distribution network planning schemes.The paper used the planning schemes in Guian,which is the first increment distribution business pilot reforms in China.There are three different planning schemes,which is 220kV-110Kv-10kv,220Kv-110kvV-20Kv and 220kV-20kV.According to the results,220kV-20kV project's investment is relatively smaller,income is relatively higher,investment payback period is relatively shorter,and it has high DEA validity,thus it is the optimal solution.