Research on the Construction of Evaluation Index System and the Determination Method of Index Weights for the Power Load Supply Guarantee Capacity of Thermal Power Units

During the operation of thermal power units, factors such as equipment aging, unstable fuel supply, and imperfect management mechanisms pose challenges to their power load supply guarantee capacity. Evaluating this capacity scientifically to boost operational efficiency and stability is urgent, especially in peak-load and extreme-climate periods.This paper constructs a comprehensive evaluation index system from five dimensions: equipment, operation, coal, management, and maintenance. It has 5 first-level, 23 second - level, and 42 third-level indicators. By stratifying dimensions, it explores influencing factors, offering a framework and data for improving load supply capacity and ensuring scientific evaluation. For the evaluation method, it combines the entropy weight method and the analytic hierarchy process. This combination reduces single-method biases, rationalizes weight allocation, and ensures evaluation authenticity. The constructed index system covers key operation factors, provides decision-making support for thermal power enterprises, improves unit power guarantee capacity, and secures the stability of power supply.