Electric Power ›› 2022, Vol. 55 ›› Issue (4): 203-213,228.DOI: 10.11930/j.issn.1004-9649.202101131

• Eenewable Energy and Energy Storage Technology • Previous Articles     Next Articles

Evaluation of Business Mode for Large-Scale Energy Storage Applications Considering Capacity Constraints

KAI Saijiang1, TAN Jie2, SUN Yiqian1, WANG Heng1, YUAN Tiejiang2   

  1. 1. State Grid Xinjiang Electric Power Co., Ltd., Urumqi 830063, China;
    2. School of Electrical Engineering, Dalian University of Technology, Dalian 116024, China
  • Received:2021-01-20 Revised:2021-10-20 Online:2022-04-28 Published:2022-04-24
  • Supported by:
    This work is supported by the Basic Scientific Research Business Project of Central Universities (No.DUT20 RC(5)021), Science and Technology Project of State Grid Xinjiang Electric Power Co., Ltd. (No.SGTYHT/19-JS-215).

Abstract: Considering the capacity-related constraints of the application value of energy storage, an accurate quantitative evaluation method for the business mode of large-scale energy storage applications is proposed. A double-cascade function is used to characterize the grid’s requirements for flexible adjustment of resource performance and capacity for energy storage, thermal power, etc. Then according to its revenue in power generation, transmission and distribution, electricity charge, and ancillary service income generated by energy storage at the source, grid, and load side respectively, an income function is established for stakeholders including new energy asset owners, grid operators, users, and energy storage asset owners in the “energy storage +” scenario. Based on stakeholders' share, an energy storage cost function is set up according to the energy storage capacity allocated for the corresponding revenue. Taking account of the investment entities such as new energy, power grids, users or third parties, a game model for energy storage investment is constructed with the objective as the maximization of the net income. Finally, according to the actual situation in Gansu Province, the business mode of large-scale promotion of energy storage under different mode scenarios was evaluated, and the sensitivity analysis of key parameters was conducted to demonstrate the effects of various combinations of operation modes on specific source-load regions. Therefore the feasibility of the proposed method is verified.

Key words: energy storage, business mode, renewable energy, double level model, game theory