Distributed Energy Resource Coordination Over Time-Varying Directed Communication Networks

QC 20191014
In this paper, we consider the optimal coordination problem for distributed energy resources (DERs), including distributed generators and energy storages. We first propose an algorithm based on the push-sum and gradient method to solve the optimal DER coordination problem in a distributed manner. In the proposed algorithm, each DER only maintains a set of variables and updates them through information exchange with a few neighboring DERs over a time-varying directed communication network. We show that the proposed distributed algorithm with appropriately chosen diminishing step sizes solves the optimal DER coordination problem if the time-varying directed communication network is uniformly jointly strongly connected. Moreover, in order to improve the convergence speed and to reduce the communication burden, we propose an accelerated distributed algorithm with a fixed step size. We show that the new proposed algorithm exponentially solves the optimal DER coordination problem if the cost functions satisfy an additional assumption and the selected step size is less than a certain critical value. Both proposed distributed algorithms are validated and evaluated using the IEEE 39-bus system.

TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik hsv//swe
ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering hsv//eng
Distributed coordination
energy storage (ES)
multiagent systems
multistep optimization
push-sum and gradient method
smart grid

Wu, DiPacific Northwest Natl Lab, Richland, WA 99352 USA. (author)
Fang, HuazhenUniv Kansas, Dept Mech Engn, Lawrence, KS 66045 USA. (author)
Ren, WeiUniv Calif Riverside, Dept Elect Engn, Riverside, CA 92521 USA. (author)
Wang, HongOak Ridge Natl Lab, Oak Ridge, TN 37932 USA. (author)
Hong, YiguangChinese Acad Sci, Inst Syst Sci, Key Lab Syst & Control, Beijing 100190, Peoples R China. (author)
Johansson, Karl H.,1967-KTH,Reglerteknik,ACCESS Linnaeus Centre(Swepub:kth)u1h0d9k2 (author)
Univ North Texas, Dept Elect Engn, Denton, TX 76203 USA.Pacific Northwest Natl Lab, Richland, WA 99352 USA. (creator_code:org_t)

In:IEEE Transactions on Control of Network Systems: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC6:3, s. 1124-11342325-5870

By the author/editor: Yang, Tao; Wu, Di; Fang, Huazhen; Ren, Wei; Wang, Hong; Hong, Yiguang; show more...; Johansson, Karl ...; show less...

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