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ORIGINAL RESEARCH article

Front. Energy Res.
Sec. Smart Grids
Volume 13 - 2025 | doi: 10.3389/fenrg.2025.1516459
This article is part of the Research Topic Advanced Modeling and Methods for Renewable-dominated Power Systems Operations under Multiple Uncertainties View all 12 articles

Dispatching of Distribution Networks with High Permeability Distributed New Energy Based on Phase Shifting Transformer Loop-Closing Device

Provisionally accepted
Xiaochen Gao Xiaochen Gao 1Haoran Xu Haoran Xu 1Xin Zhao Xin Zhao 1*Shan Gao Shan Gao 1Haixiang Xie Haixiang Xie 1Ningyu Zhang Ningyu Zhang 2Qun Li Qun Li 2Yue Yang Yue Yang 1
  • 1 School of Electrical Engineering, Southeast University, Nanjing, Jiangsu Province, China
  • 2 State Grid Jiangsu Electric Power Research Institute, Nanjing, China

The final, formatted version of the article will be published soon.

    To address the issue of curtailment in wind and photovoltaic power due to high penetration of distributed renewable energy sources in multi-partition distribution networks, and to enhance operational efficiency and voltage quality, a day-ahead and intra-day scheduling strategy based on Phase Shifting Transformer (PST) loop-closing device is proposed. The day-ahead scheduling model aims to maximize the benefits from loopclosing operations by incorporating errors from new energy and load forecasts. Robust optimization techniques are employed to solve this model, resulting in the determination of the optimal loop-closing line.For intra-day scheduling, the focus is on minimizing the weighted sum of curtailment rate, voltage deviation rate, and network loss, thereby optimizing reactive power distribution and ensuring full utilization of renewable energy. Second-order cone programming is applied to the objectives and constraints to ensure convergence and expedite the solution process. Simulation results on an improved IEEE 33 bus test system demonstrate that the proposed day-ahead and intra-day scheduling strategy effectively leverages the voltage regulation and power flow control capabilities of PST loop-closing devices. This approach not only ensures the safety of the distribution network but also facilitates cross-regional integration of distributed renewable energy, reduces operational costs, and enhances overall network performance.

    Keywords: Distributed New Energy, High permeability, Phase Shifting Transformer loop-closing device, Distribution network, day-ahead and intra-day optimization, loop-closing operation

    Received: 24 Oct 2024; Accepted: 15 Jan 2025.

    Copyright: © 2025 Gao, Xu, Zhao, Gao, Xie, Zhang, Li and Yang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Xin Zhao, School of Electrical Engineering, Southeast University, Nanjing, Jiangsu Province, China

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.