Research on whole-process multi-attribute investment decision of power grid infrastructure project considering language aggregation operator

In China, power grid infrastructure projects are the ones with large construction scale and high investment amount among many investment infrastructure projects, which bear many social functions and have the characteristics of strong unpredictability, so the risk is relatively high. In order to better realize the investment decision, it is necessary to study the control of the whole investment process from the perspective of power grid investment. Based on the investment demand of power grid enterprises and the characteristics of power grid construction projects, this paper establishes the multi-attribute decision evaluation system of power grid enterprises' investment control in the whole process from four stages: project approval and research, design and bidding, construction and completion delivery and operation. The optimal project investment scheme is obtained by sorting each scheme based on language aggregation operator. Four power grid construction projects of different types are selected for example analysis, and the important factors affecting investment control are analyzed by taking project cases as examples. The whole process multi-attribute investment decision evaluation system of power grid infrastructure project constructed in this paper has certain guiding significance to the investment of power grid infrastructure project in China.