Research On Calculation Method And Model Of Independent Power Transmission And Distribution Pricing In Power Grid Enterprises

With the continuous and steady advancement of China's electric power system reform,the reform of independent transmission and distribution price of power grid enterprises has also entered a very important period.According to the relevant requirements of provincial Power grid Transmission and Distribution Pricing Method,the profit model of the price difference between purchase and sale of power transmission and distribution should be gradually changed to the principle of "permitted cost plus reasonable income",so as to realize the corresponding power transmission and distribution price verified by voltage grade and user category.Firstly,this paper expounds the research status of electricity price for transmission and distribution at home and abroad.On the basis of drawing on and absorbing relevant experience of pricing methods for transmission and distribution abroad,this paper combines with the actual research status in China to provide a good reference for the calculation and verification of electricity price for transmission and distribution in China.By means of the transmission and distribution pricing model,the permitted cost and effective assets of H grid Company are calculated,and the permitted income is calculated by the weighted average cost of capital ratio calculation model,and finally the permitted income is obtained.Using the 2018 data as the baseline,the revenue and electricity sales for 2019 are projected.According to the cost transmission mechanism,the transmission and distribution costs of high voltage grade are transferred to low voltage grade step by step according to the electricity sold of each voltage grade,so as to realize the allocation of transmission and distribution costs.At the same time,according to the corresponding cost pricing theory,to build the voltage level transmission and distribution pricing model.Then,based on the allocation model of the transmission and distribution price of different voltage classes,the example calculation of the transmission and distribution price level of H grid company is completed.Based on the characteristic curve of the statistical relation between load rate and simultaneous rate,and with the theory of incentive mechanism design,the optional load rate transmission and distribution price package combination model is constructed.It is proved by strict mathematical derivation that the package model satisfies the incentive compatibility constraint,and the selectivity and its establishment conditions are revealed.Finally,according to the actual load characteristics of power users of the same voltage level,the corresponding electricity transmission and distribution package combination is provided to provide guidance and Suggestions for the voltage level to calculate the electricity transmission and distribution and the research on the transmission and distribution pricing mechanism with optional load rate.