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ORIGINAL RESEARCH article

Front. Energy Res.
Sec. Smart Grids
Volume 12 - 2024 | doi: 10.3389/fenrg.2024.1486319
This article is part of the Research Topic Advancing Demand Response in Renewable Smart Grid for a Sustainable Future View all articles

A Collaborative Source-Grid-Load Frequency Regulation Strategy for DC Sending-End Power Grid Considering Electrolytic Aluminum Participation

Provisionally accepted
Chao Xing Chao Xing *Xinze Xi Xinze Xi Xin He Xin He Can Deng Can Deng Mingqiang Zhang Mingqiang Zhang
  • Electric Power Research Institute of Yunnan Power Grid Co Ltd, Yunnan, China

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

    As renewable energy sources are increasingly integrated into the power system, traditional frequency regulation methods face challenges such as reducing system inertia and diminishing regulatory capacity. This paper presents a source-network-load collaborative control strategy for the participation of electrolytic aluminum in the frequency regulation of the DC sending-end power grid. Firstly, the frequency response characteristics of the UHVDC sending-end system are analyzed, and an electrolytic aluminum load model is established. Then, a hierarchical source-network-load control strategy is proposed. The upper-layer control strategy assigns frequency support tasks to synchronous generators, electrolytic aluminum stations and UHVDC systems based on the frequency dead zones. The lower-layer control aims to minimize the cost of controlling electrolytic aluminum loads by distributing power adjustment commands to each electrolytic aluminum series within the power station. The simulation results validate the effectiveness and economic benefits of the proposed strategy in reducing control costs and maintaining system stability.

    Keywords: Frequency regulation, UHVDC system, electrolytic aluminum load, sourcenetwork-load control strategy, hierarchical control

    Received: 26 Aug 2024; Accepted: 28 Oct 2024.

    Copyright: © 2024 Xing, Xi, He, Deng and Zhang. 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: Chao Xing, Electric Power Research Institute of Yunnan Power Grid Co Ltd, Yunnan, China

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