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Conservation Voltage Reduction of Active Distribution Systems with Networked Microgrids

Constante Flores, Gonzalo Esteban
http://orcid.org/0000-0002-9668-5889
http://rave.ohiolink.edu/etdc/view?acc_num=osu1531861356445195

Abstract Details

2018, Master of Science, Ohio State University, Electrical and Computer Engineering.
This thesis addresses the coordinated operation of networked microgrids (MGs), distributed energy resources (DERs), and Volt-VAR control devices in the implementation of Volt-VAR optimization (VVO). Although our formulation is focused on implementing conservation voltage reduction (CVR), it can be extended for other VVO objectives e.g. losses minimization, peak demand shaving, or energy consumption reduction. We assume that the distribution network operator (DNO) has to make decisions anticipating the decisions of the MG operators. The hierarchy shown in this problem is related to a Stackelberg game. Hence, we formulate this problem as a bi-level optimization problem where the upper-level problem corresponds to the DNO and the lower-level problems correspond to each MG. The DNO as well as each MG are assumed to be independent entities with their individual objective functions. The objective of the DNO depends on the objective of the VVO objective. In particular, in the case of CVR, the objective is to minimize the load demand and losses of the distribution system. Conversely, we assume that the objective of the MG operators is to minimize the operation costs of dispatching DGs within the MG and buying/selling electricity from/to DNO i.e. an economic dispatch. The integration of DERs at the distribution level changes the response of the grid to a VVO strategy. We consider that DERs are located at the distribution network and within each microgrid. We study the four voltage-power control modes of DERs stated in the IEEE Std. 1547-2018, namely constant power factor, voltage-reactive power, active--reactive power, and constant reactive power. Finally, we validate our formulation in a modified IEEE 33-node test system. The effectiveness of CVR with the different voltage-power control modes of DERs is analyzed. The findings of this work are significant for the implementation of VVO in active distribution systems with networked microgrids.
Mahesh Illindala, Ph.D. (Advisor)
Jiankang Wang, Ph.D. (Committee Member)
57 p.
Electrical Engineering
bilevel programming; distributed energy resources; distributed generation; distribution management systems; distribution systems; microgrids; optimization

Recommended Citations

Citations

  • Constante Flores, G. E. (2018). Conservation Voltage Reduction of Active Distribution Systems with Networked Microgrids [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1531861356445195

    APA Style (7th edition)

  • Constante Flores, Gonzalo. Conservation Voltage Reduction of Active Distribution Systems with Networked Microgrids. 2018. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1531861356445195.

    MLA Style (8th edition)

  • Constante Flores, Gonzalo. "Conservation Voltage Reduction of Active Distribution Systems with Networked Microgrids." Master's thesis, Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1531861356445195

    Chicago Manual of Style (17th edition)

osu1531861356445195
641
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This open access ETD is published by The Ohio State University and OhioLINK.