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Volume 7 Issue 3
Apr.  2020

IEEE/CAA Journal of Automatica Sinica

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Article Navigation >  IEEE/CAA Journal of Automatica Sinica  > 2020  >  7(3): 842-852
Qing Yang, Gang Chen and Ting Wang, "ADMM-based Distributed Algorithm for Economic Dispatch in Power Systems With Both Packet Drops and Communication Delays," IEEE/CAA J. Autom. Sinica, vol. 7, no. 3, pp. 842-852, May 2020. doi: 10.1109/JAS.2020.1003156
Citation: Qing Yang, Gang Chen and Ting Wang, "ADMM-based Distributed Algorithm for Economic Dispatch in Power Systems With Both Packet Drops and Communication Delays," IEEE/CAA J. Autom. Sinica, vol. 7, no. 3, pp. 842-852, May 2020. doi: 10.1109/JAS.2020.1003156
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ADMM-based Distributed Algorithm for Economic Dispatch in Power Systems With Both Packet Drops and Communication Delays

doi: 10.1109/JAS.2020.1003156
Funds:  This work was supported by the National Natural Science Foundation of China (61673077)
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    Abstract
  • By virtue of alternating direction method of multipliers (ADMM), Newton-Raphson method, ratio consensus approach and running sum method, two distributed iterative strategies are presented in this paper to address the economic dispatch problem (EDP) in power systems. Different from most of the existing distributed ED approaches which neglect the effects of packet drops or/and time delays, this paper takes into account both packet drops and time delays which frequently occur in communication networks. Moreover, directed and possibly unbalanced graphs are considered in our algorithms, over which many distributed approaches fail to converge. Furthermore, the proposed schemes can address the EDP with local constraints of generators and nonquadratic convex cost functions, not just quadratic ones required in some existing ED approaches. Both theoretical analyses and simulation studies are provided to demonstrate the effectiveness of the proposed schemes.

     

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    Highlights

    • This paper for the first time presents an ADMM-based distributed algorithm to solve the EDP with both packet drops and communication delays.
    • Different from most of the existing studies on the EDP which require the communication graphs to be undirected, the proposed schemes can solve the EDP on general digraphs.
    • The general convex cost functions are considered in this paper and both the coupled equality constraint and local constraints of generators are taken into account.

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