• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

Electric Power Construction ›› 2018, Vol. 39 ›› Issue (12): 47-54.doi: 10.3969/j.issn.1000-7229.2018.12.006

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Economic Operation of an Integrated Energy System Considering Repeated Conversion of Energy Sources Within an Energy Hub

FENG Qiming1 , LIU Jichun1, YANG Yangfang1,TAN Xinyi1,YIN Long1,SUN Ningjie2   

  1. 1.School of Electrical Engineering and Information,Sichuan University,Chengdu 610065,China;2.School of Electrical Engineering,Southwest Jiaotong University, Chengdu 611756, China
  • Online:2018-12-01
  • Supported by:
    This work is supported by The National High Technology Research and Development of China (863 Program) (No.2014AA051901 ).

Abstract: The introduction of P2G (power to gas) equipment into integrated energy systems has strengthened the coupling between electricity and natural gas networks, reduced the abandonment of wind power, but also reduced to a certain extent the optimization of renewable energy sources in energy hubs. Energy conversion occurs during dispatch, which reduces the energy efficiency and generates energy losses. In this context, a two-layer optimization scheduling model is proposed to reduce the repetitive conversion of energy sources. The KKT condition is used to convert the two-layer model into a single-layer model, and the scheduling operation schedule of the conversion equipment and the minimum operating cost of the system are optimized.Finally, four different typical scenarios are used to verify the system in the example. The results show that the proposed optimized scheduling model can reduce the operating cost of the system and improve the energy efficiency. The scheduling model that considers repeated energy conversions has significantly improved economics

Key words: integrated energy system, energy hub, optimal dispatch, repeated energy conversion, two-layer optimization

CLC Number: