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An interval power flow method for radial distribution systems based on hybrid second-order cone and linear programming

引用

SUSTAINABLE ENERGY GRIDS & NETWORKS 2023年 36卷

作者： Zhang, Xuehan Woo, Hyeon Choi, Sungyun Fuzhou Univ Coll Elect Engn & Automat Fuzhou 350116 Peoples R China Korea Univ Sch Elect Engn Seoul 02841 South Korea

Interval power flow (IPF) analysis is a promising approach to handling the uncertainty of renewable energy sources and loads in power systems. However, most existing studies are based on standard interval arithmetic or affine arithmetic. Little work can be found that employs traditional optimization methods to obtain the interval results, especially based on convexified power flow formulation. Therefore, this paper proposes an IPF method based on a hybrid second-order cone and linear programming for radial distribution systems. First, the optimization process of IPF based on the standard power flow model is introduced. Given the non-convexity of the standard power flow model, an IPF framework based on second-order cone programming (SOCP) for radial distribution systems is proposed. Moreover, considering that the SOCP formulation can only achieve half of the whole IPF process, a revised linear distflow formulation is adopted, and the IPF method based on a hybrid second-order cone and linear programming is devised. Finally, the proposed IPF method is compared with the standard power flow equation-based IPF method and the Monte Carlo method. The simulation results on modified IEEE 33-node and 69-node distribution systems demonstrate the effectiveness and prospects of the proposed IPF method. (c) 2023 Elsevier Ltd. All rights reserved.

关键词： Interval power flow Radial distribution system Second-order cone programming revised linearized distflow formulation Renewable energy sources

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