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Dynamic Economic Dispatch for Microgrid Based on the Chance-Constrained Programming

  • Huang, Daizheng (Dept of Biomedical Engineering, Guangxi Medical University) ;
  • Xie, Lingling (School of Electrical Engineering, Guangxi University) ;
  • Wu, Zhihui (Dept of Biomedical Engineering, Guangxi Medical University)
  • Received : 2016.02.03
  • Accepted : 2017.03.13
  • Published : 2017.05.01

Abstract

The power of controlled generators in microgrids randomly fluctuate because of the stochastic volatility of the outputs of photovoltaic systems and wind turbines as well as the load demands. To address and dispatch these stochastic factors for daily operations, a dynamic economic dispatch model with the goal of minimizing the generation cost is established via chance-constrained programming. A Monte Carlo simulation combined with particle swarm optimization algorithm is employed to optimize the model. The simulation results show that both the objective function and constraint condition have been tightened and that the operation costs have increased. A higher stability of the system corresponds to the higher operation costs of controlled generators. These operation costs also increase along with the confidence levels for the objective function and constraints.

Acknowledgement

Supported by : National Natural Science Foundation of China

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