Research on Optimization of Power Grid Planning for Comprehensive Transmission and Distribution Tariff Reform

The reform of transmission and distribution electricity prices has put forward higher and more optimized requirements for power grid planning. Based on the requirements of the transmission and distribution electricity price reform, different types of planning efficiency and benefit index models for power grids are constructed, and the combined impact of historical planning project optimization, relative importance of various projects, and planning objective constraints are comprehensively considered. A power grid investment allocation and optimization model based on the efficiency and benefit index model is constructed, and the key uncertainty indicators affecting the efficiency and benefit index are analyzed based on the risk index model. The effectiveness of the method was verified by comparing it with traditional methods and core regulatory parameters of transmission and distribution electricity prices. In recent years, with the implementation of peak valley time of use electricity prices in multiple provinces, the original user load characteristics have been changed, resulting in a gradual reduction in the difference between peak and valley loads, which has had an impact on load forecasting in power grid planning.