Electric Power ›› 2016, Vol. 49 ›› Issue (6): 101-106.DOI: 10.11930/j.issn.1004-9649.2016.06.101.06

• Power System • Previous Articles     Next Articles

Dynamic Differential Evolution Algorithm Based on Chaotic Sequences for Dynamic Economic Dispatch Problem of Power System

CHEN Guangyu1, DING Xiaoqun1, BIAN Erman2   

  1. 1. College of Energy and Electrical Engineering, Hohai University, Nanjing 211100, China;
    2. Electric Power Dispatching and Control Center, Heilongjiang Electric Power Co., Ltd., Harbin 150090, China
  • Received:2015-12-08 Revised:2016-06-16 Online:2016-06-16 Published:2016-06-16

Abstract: Differential evolution (DE) algorithm is applied to solve dynamic economic dispatch (DED) problem and a dynamic differential evolution based on chaotic sequences (ADDECS) is proposed. Chaotic sequences is used in dynamic parameter settings adjustment in DE to keep population diversity. Dynamic search strategies including both global and local search strategy are used to improve algorithm efficiency. To accelerate convergence and deal with complicated constraints of DED problem, constrained process mechanism based on multi-objective concepts is adopted. A new constraint process approach is proposed to allocate infeasible constraint violation proportionally among units according to their regulatory abilities. At the same time, different mutation strategies and improved random search are used to guide population evolution and to enhance global search ability. The feasibility and effectiveness of proposed method is verified on a 10-unit test system. Compared with other methods, ADDECS can obtain better solutions in shorter computational time along with higher robustness.

Key words: dynamic economic dispatch, chaotic sequences, differential evolution, dynamic search strategy, constraint handle

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