Coupling Clearing Model for Coordinated Operation of Inter provincial and Intra provincial Integration Electricity Market

This article proposes a coupled clearing model to address the market coupling and clearing mechanism issues in the coordinated operation of inter provincial and intra provincial electricity markets in China, in order to achieve effective integration and coordination of inter provincial and intra provincial electricity markets. Firstly, this study establishes a dual layer optimization model that considers the coupling characteristics between electricity markets in different provinces. The upper layer model is used to coordinate market transactions between different provinces, while the lower layer model is used for clearing calculations within the provincial market, ensuring optimal resource allocation and market fairness. Next, this study uses the Mixed Integer Linear Programming (MILP) algorithm to solve the model, in order to improve computational efficiency and stability. At the same time, a penalty factor is introduced to regulate market behavior, ensuring the convergence of the model and the rationality of the results. The experimental results show that the coupled clearing model reduced the average total electricity cost by about 5.4% within 10 days, from 11.45 million yuan to 10.6 million yuan, and increased the inter provincial electricity dispatch by about 4.2%, significantly improving the inter provincial utilization efficiency of electricity resources. It also increased the consumption of renewable energy in the intra provincial market by about 10%, verifying its advantages in improving resource allocation and market fairness.