Research On Two-part Electricity Price Under The Background Of Power System Reform

With the continuous advancement of domestic power system reform,the degree of power marketization is becoming higher and higher.It is of great significance to study the corresponding electricity price mechanism.A scientific and reasonable electricity price mechanism will help to effectively play the role of economic leverage and optimize resource allocation.However,in the current electricity price system,the two-part electricity price is mainly applied to large industrial power consumption,with a relatively small application range,and the impact of load characteristics on the cost and electricity price is not fully considered,which makes the actual power cost deviate from the shared cost,affecting the optimization of power consumption behavior and the development of power industry.Therefore,under the new situation of domestic power system reform,based on the current status of the electricity price system,it is of certain practical significance to study the two-part electricity price from the aspects of cost sharing and load characteristics.The main work of this thesis is as follows:Firstly,the necessity and characteristics of the application of two-part electricity price are described.This thesis makes a comparative analysis of the one-part electricity price and the two-part electricity price,and points out the regional differences in the implementation scope and price level of the two-part transmission and distribution electricity price by comparing the transmission and distribution electricity prices of three regions such as Shenzhen power grid in combination with the domestic electricity price policies and documents.Secondly,the two-part electricity price is studied from the perspective of cost and load characteristics.Based on the analysis of several cost allocation methods such as peak load liability method and maximum power method,this thesis analyzes several cost allocation methods based on load characteristics in detail,and tries to introduce the idea of weighted average to combine different cost allocation methods to construct a cost allocation algorithm based on weighted average load.Furthermore,based on the influence of load rate and simultaneity rate on power cost,this thesis introduces the load rate simultaneity rate curve in combination with the structure and characteristics of two-part electricity price.Through this model,the capacity cost can be apportioned between the basic electricity charge and the kilowatt hour electricity charge,and the cost sharing proportion of the basic electricity charge and the kilowatt hour electricity charge under different load rate levels can be obtained,which provides a reference basis for the pricing of the basic electricity price and the kilowatt hour electricity price of the two-part electricity price.Finally,the related algorithms and models are studied by means of numerical examples.Firstly,five cost allocation methods based on load characteristics are used to calculate the cost allocation results of users with different load characteristics,and the difference and degree of each method are compared.The impact of cost allocation methods on electricity pricing is pointed out,and the applicability and practicability of several different allocation methods are discussed;Then the relationship between algorithm,calculation results and load characteristics is shown by drawing load curve.In addition,through the load rate simultaneity curve model,the cost sharing ratio of basic electricity price and electricity tariff under different curve parameters is calculated and compared,and the influence of different parameters on the pricing of basic electricity price and the kilowatt hour electricity price in the two-part electricity price is discussed.