Optimal Operation of Energy Hubs With Large-Scale Distributed Energy Resources for Distribution Network Congestion Management

• Published in: IEEE transactions on sustainable energy Vol. 12; no. 3; pp. 1755 - 1765
• Main Authors: Hu, Junjie, Liu, Xuetao, Shahidehpour, Mohammad, Xia, Shiwei
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 01.07.2021; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Complementarity; Congestion; congestion mitigation; Cooling; Distributed generation; Distribution networks; Electric power systems; Electricity; Energy distribution; Energy hub; Energy resources; Energy sources; Heat exchangers; Heat pumps; Heating systems; Hubs; multiple energy complementary; Natural gas; Peak periods; Penetration; Renewable energy; Renewable energy sources; Renewable resources; Stochastic programming
• ISSN: 1949-3029; 1949-3037
• DOI: 10.1109/TSTE.2021.3064375

Congestion problems might occur in distribution networks as the penetration of distributed energy resources (DERs) progresses. This study focuses on the complementarity of multiple energy resources in energy hubs (EHs) to solve possible distribution network congestions. First, we consider an EH in which combined cooling, heating and power (CCHP) units and heat pumps are integrated with renewable energy resources. The EH models the intrinsic coupling relationship among various energy carriers, forming a flexible operation where electricity, natural gas, cooling and heat can complement each other. Next, an optimal operation strategy of multiple energy hubs enables gas-to-electricity to provide local energy supply for EH during electricity peak periods, and consume renewable energy generation by the complementarity of electricity, heat and cooling. In addition, the uncertainty of renewable energy resources is taken into account via scenario-based stochastic programming. Numerical results show that the proposed operation strategy explores EHs' operation flexibility to mitigate distribution network congestion when we consider high renewable energy penetration in power systems.