A Distributed Algorithm for Economic Dispatch Over Time-Varying Directed Networks With Delays

Journal Article · Thu Jun 01 00:00:00 EDT 2017 · IEEE Translations on Industrial Electronics

DOI:https://doi.org/10.1109/TIE.2016.2617832· OSTI ID:1358503

Yang, Tao; Lu, Jie; Wu, Di; Wu, Junfeng; Shi, Guodong; Meng, Ziyang; Johansson, Karl Henrik

In power system operation, economic dispatch problem (EDP) is designed to minimize the total generation cost while meeting the demand and satisfying generator capacity limits. This paper proposes an algorithm based on the gradient-push method to solve the EDP in a distributed manner over communication networks potentially with time-varying topologies and communication delays. It has been shown that the proposed method is guaranteed to solve the EDP if the time-varying directed communication network is uniformly jointly strongly connected. Moreover, the proposed algorithm is also able to handle arbitrarily large but bounded time delays on communication links. Numerical simulations are used to illustrate and validate the proposed algorithm.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1358503
• Report Number(s): PNNL-SA-114079
• Journal Information: IEEE Translations on Industrial Electronics, Vol. 64, Issue 6; ISSN 0278-0046
• Country of Publication: United States
• Language: English