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Energy Efficiency Optimal Dispatch for Park-Level Energy Internet

In order to improve energy efficiency and renewable energy accommodation, energy efficiency optimal dispatch is proposed for park-level energy internet. In view of the multi-energy flow characteristics of park-level energy internet, a new indicator named energy utilization exergy-efficiency is proposed. The indicator introduces the concept of exergy and considers the impact of grid-connected microgrid and distributed renewable energy. A corresponding model of energy efficiency optimal dispatch is established. The rationality and superiority of the proposed indicator and model are verified by case study. The simulation results show that energy utilization exergy-efficiency can more accurately reflect the efficient use of energy by park-level energy internet. Energy efficiency optimal dispatch can promote energy cascade utilization, energy-saving and emission-reduction. And there is consistency between the results of the proposed dispatch and economic dispatch, which can help guide the development of outsourcing electricity prices for park-level energy internet in the incremental distribution network area.