• 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 ›› 2022, Vol. 43 ›› Issue (10): 158-165.doi: 10.12204/j.issn.1000-7229.2022.10.015

• Power Economic Research • Previous Articles     Next Articles

A Bi-level Programming Approach of Economic Dispatch of Electricity Retailers

HAN Guang1, YANG Chenguang1, WU Xiangming1, TAO Peng2, ZHOU Hui3, HU Yinlong3()   

  1. 1. State Grid Hebei Electric Power Co., Ltd., Shijiazhuang 050021, China
    2. Marketing Service Center, State Grid Hebei Electric Power Co., Ltd., Shijiazhuang 050021, China
    3. College of Energy and Electrical Engineering, Hohai University, Nanjing 211100, China
  • Received:2022-02-17 Online:2022-10-01 Published:2022-09-29
  • Contact: HU Yinlong E-mail:ylhu@hhu.edu.cn
  • Supported by:
    The Science and Technology Project of State Grid Hebei Electric Power Company(KJ2021-021/5204YF20001V)


In order to solve the economic dispatch problem of a typical retailer coping with the stochastic risk brought by the distributed generation and demand-side fluctuation, a bi-level optimization model with the introduction of random variables is proposed. In this model, the upper-level sub-problem aims to simulate the market clearing process of electricity and reserve auxiliary services, where market clearing price and market clearing electricity are the decision variables, while the lower-level sub-problem is formulated to minimize the costs of purchasing under time-of-use pricing given by the simulation of market clearing. The model is converted into a deterministic model by chance-constrained programming, and the equilibrium solution is obtained by iterations between the upper and lower layers, where the CPLEX solvers are employed to address the upper and lower level sub-problems, respectively. Finally, the impact of different confidence level on the decision carried out by retailers is clarified through the analysis of the numerical simulation of the bi-level optimization model. It is verified that the model can effectively reflect the impact of the decision-making behavior of retailers on the market clearing process.

Key words: economic dispatch, electricity retailer, bi-level programming, chance constraint, time-of-use price

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