Electric Power ›› 2019, Vol. 52 ›› Issue (6): 37-44,53.DOI: 10.11930/j.issn.1004-9649.201903014

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Evaluation Method for Optimal Operation Mode of Integrated Energy Supply System Based on Load Ratio

LIU Xingyue, TANG Lin, YU Na   

  1. School of Information Science and Engineering, Chengdu University, Chengdu 610106, China
  • Received:2019-03-18 Revised:2019-05-16 Online:2019-06-05 Published:2019-07-02
  • Supported by:
    This work is supported by the Science Research Projects of Education Department of Sichuan Province (Research on Coordination and Dispatching Technology of Hybrid Wind Power Storage System, No.18ZA0117) and the Youth Fund Projects of ChengDu University (Research on Optimal Dispatching of Microgrid System Considering Renewable Energy and Electric Vehicle, No.2017XJZ24).

Abstract: The integrated energy supply system can provide loads for cooling, heating and power for users at the same time, and there are two operation modes: CCHP operation and separation production. Firstly, based on the life cycle theory, a comprehensive evaluation index system is constructed including greenhouse gas treatment cost in the energy life cycle and system operation cost. By comparing the performance between separation production and CCHP in terms of comprehensive evaluation index under the modes of CCHP-FHL and CCHP-FEL, an evaluation method of the optimal operation mode is obtained based on the load of cooling, heating and power. Finally, the evaluation method is applied in an example system to evaluate the performance of CCHP-FHL and CCHP-FEL modes under separation production and CCHP operation in 3 types of typical days in winter, spring & autumn, and summer respectively. It can be concluded that the optimal operation mode is no longer a single operation mode, but a mixed operation mode determined by the proportion of cooling, heating and power loads. It is verified that the evaluation method can be used to evaluate and optimize the integrated energy supply system conveniently and effectively.

Key words: integrated energy supply system, CCHP, separation production, life cycle theory, load ratio, evaluation method

CLC Number: