Research on Reasonable Grid Investment Scale Measurement under The Reform of Transmission and Distribution Electricity Price

Abstract

Power transmission and distribution price reform is one of the key tasks of the new round of power system reform, which will have a great impact on the investment decision and management mechanism of power grid enterprises. This paper analyzes power grid investment decision under the reform of transmission and distribution electricity price reform, proposes the power grid investment demand estimation model and the power grid enterprise investment capacity measurement model respectively, then constructs power grid investment scale optimization model and finally verifies through the calculation example. The results show that the return of the unit investment, the expansion project is greater than the new projects, new projects more than technological upgrading projects, and low voltage grade project is greater than the high voltage grade, at the same time when the marginal investment allowed revenue equals the marginal punishment, total power grid enterprises to allow the largest income.