Research on Influencing Factors of Power Grid Investment Efficiency Adapting to Clean Energy Development

With the proposal of “carbon peak” close-range target and “carbon neutral” vision goal, the development of clean energy is accelerated, more clean energy grid connection requires the power system to accept more volatile power supply, the power grid needs to increase the investment in all kinds of equipment to promote the consumption of clean energy, so it is necessary to study the factors affecting the investment efficiency. In this study, DEMATEL-ISM method is used to build a multi-layer recursive structure model, extract the key factors affecting the investment efficiency of the power grid from the development of clean energy, and analyze the investment efficiency of the power grid from four aspects: improving system flexibility, security, intelligence, network connection and network framework strengthening. The results show that the 21 driving factors of the indicator system development of clean energy that affect the investment efficiency of the power grid are divided into three layers. The fundamental driving factors include channel utilization efficiency, effective running time, flexible supply and clean energy penetration rate. Among them, the penetration rate of clean energy is the most fundamental driving factor, and the investment of various projects is the most important deep factor. Investment demand is the most important surface factor.