• 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 ›› 2019, Vol. 40 ›› Issue (8): 59-68.doi: 10.3969/j.issn.1000-7229.2019.08.008

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Analysis of the Optimization of Integrated Energy System Considering Energy Subsystems and Energy Storages

ZHONG Yongjie1, XIE Dongliang2, SUN Yonghui1, ZHAI Suwei1, CHANG Fugang3, ZHANG Mingli3   

  1. 1. College of Energy and Electrical Engineering, Hohai University, Nanjing 210098, China; 2. NARI Group Corporation (State Grid Electric Power Research Institute), Nanjing 211106, China;3. Economic and Technological Research Institute, State Grid Liaoning Electric Power Co. Ltd., Shenyang 110015, China
  • Online:2019-08-01
  • Supported by:
    This work is supported by Science and Technology Project of State Grid Electric Power Research Institute/NARI Group Corporation/NARI Technology Co., Ltd. “Research on simulation evaluation key technologies of integrated energy system”, Science and Technology Project of State Grid Corporation of China “Research on key technologies and framework of provincial energy internet”(No. LNDL2018ZX-11), National Natural Science Foundation of China(No. 61673161) and Natural Science Foundation of Jiangsu Province of China(No. BK20161510).

Abstract: In view of the fact that the key characteristic variables of coordinated operation of power, heat, gas, cooling and steam subsystems (PHGCSS) are not fully considered in integrated energy system (IES), optimal day-ahead steady-state analysis of IES considering the key characteristic variables of energy subsystem is studied. Firstly, on the basis of multi-type load demand, energy hub (EH) and energy coupling mode are designed. On the basis of EH, the model architecture of energy station with PHGCSS is proposed. Secondly, the steady-state mathematical models of PHGCSS in IES are developed. On the basis of peak-valley time-of-use power price mechanism, the influence of power storage, heat storage and cooling storage on optimal day-ahead steady state of IES is analyzed. Then, a nonlinear optimization model for day-ahead steady-state IES is proposed under different load structures with PHGCSS. Finally, the numerical case verifies validity of optimal calculation and steady-state operation analysis for IES. The models and methods are suitable for optimal day-ahead steady-state analysis of IES containing PHGCS and dynamic economic dispatch, which can reasonably reflect operation characteristics of IES.

Key words: integrated energy system (IES), power, heat, gas, cooling and steam, energy hub (EH), steady-state optimization, energy storage

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