(1. Department of Electrical Engineering, Tsinghua University, Beijing 100084, China; 2. State Key Laboratory of Control and Simulation of Power System and Generation Equipments, Tsinghua University, Beijing 100084, China)

Energy-intensive enterprises (EIEs) are important industrial loads, which have very good adjustment capability. Integrating EIEs into power system dispatch can not only improve the economic efficiency of the entire system, but also reduce the EIEs’ electricity costs under certain mechanisms. The related issues of integrating EIEs into power system dispatch are analyzed, and the models are developed to describe the EIEs’ operational and behavioral characteristics. Then the models are embedded into a security-constrained unit commitment model. On this basis, the three different dispatch modes, i.e., centralized coordinative dispatch, decomposed coordinative dispatch, and single-step coordinative dispatch, are proposed. Finally, the necessity of the coordinated dispatch is demonstrated, and the different coordination modes are compared via cases, while the benefits of coordinative dispatch are especially shown in helping accommodate large-scale renewable energy generation. This work is supported by National Key Technologies R&D Program （No. 2015BAA01B04） and the Foundation for Innovative Research Groups of the National Natural Science Foundation of China （No. 51321005）.