Abstract
Renewable energies are increasingly integrated in electric distribution networks and will cause severe overvoltage issues. Smart grid technologies make it possible to use coordinated control to mitigate the overvoltage issues and the optimal power flow (OPF) method is proven to be efficient in the applications such as curtailment management and reactive power control. Nonconvex nature of the OPF makes it difficult to solve and convex
relaxation is a promising method to solve the OPF very efficiently. This paper investigates the geometry of the power flows and the convex-relaxed power flows when high penetration level of renewables is present in the distribution networks. The geometry study helps understand the fundamental nature of the OPF and its convex-relaxed problem, such as the second-order cone programming (SOCP) problem. A case study based on a three-node system is used to illustrate the geometry profile of the feasible sub-injection (injection of nodes excluding the root/substation node) region
relaxation is a promising method to solve the OPF very efficiently. This paper investigates the geometry of the power flows and the convex-relaxed power flows when high penetration level of renewables is present in the distribution networks. The geometry study helps understand the fundamental nature of the OPF and its convex-relaxed problem, such as the second-order cone programming (SOCP) problem. A case study based on a three-node system is used to illustrate the geometry profile of the feasible sub-injection (injection of nodes excluding the root/substation node) region
Original language | English |
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Journal | Energy Procedia |
Volume | 100 |
Number of pages | 8 |
ISSN | 1876-6102 |
DOIs | |
Publication status | Published - 2016 |
Event | 3rd International Conference on Power and Energy Systems Engineering - Kyushu Institute of Technology, Kitakyushu, Japan Duration: 8 Sep 2016 → 12 Sep 2016 |
Conference
Conference | 3rd International Conference on Power and Energy Systems Engineering |
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Location | Kyushu Institute of Technology |
Country/Territory | Japan |
City | Kitakyushu |
Period | 08/09/2016 → 12/09/2016 |
Bibliographical note
© 2016 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND licenseKeywords
- Power flow
- Convex relaxation
- Distribution network
- Distributed energy resources