考虑序贯控制响应的lc - hvdc后续换相故障改进预测方法

IF 8.7 1区 工程技术 Q1 ENERGY & FUELS Protection and Control of Modern Power Systems Pub Date : 2023-09-20 DOI:10.1186/s41601-023-00323-9
Jinxin Ouyang, Xinyu Pan, Junjun Ye, Chao Xiao, Yanbo Diao, Qingwu Zhang
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引用次数: 0

摘要

在基于线路整流变换器的高压直流系统中,在第一次整流故障恢复过程中容易产生后续整流故障。SCF对电力系统的安全稳定运行构成重大威胁,因此对SCF的准确预测具有重要意义。但是,SCF受逆变站主电路的工作特性和序贯控制响应耦合效应的影响。这些很难准确预测。本文基于自旋流场的物理原理,提出了一种考虑控制响应的自旋流场预测方法。描述了控制器在第一次CF恢复过程中不同阶段的时序和开关条件,推导了不同控制器对换相电压的影响方程。提出了SCF阈值电压的计算方法,并建立了预测方法。仿真结果表明,该方法能够准确预测流场,为抑制流场提供了有效的工具。
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An improved prediction method of subsequent commutation failure of an LCC-HVDC considering sequential control response
Abstract Subsequent commutation failure (SCF) can be easily generated during the first commutation failure (CF) recovery process in a line-commutated converter-based high voltage direct-current system. SCF poses a significant threat to the safe and stable operation of power systems, and accurate prediction of CF is thus important. However, SCF is affected by the operating characteristics of the main circuit and the coupling effects of sequential control response in the inverter station. These are difficult to predict accurately. In this paper, a new SCF prediction method considering the control response is proposed based on the physical principle of SCF. The time sequence and switching conditions of the controllers at different stages of the first CF recovery process are described, and the corresponding equations of commutation voltage affected by different controllers are derived. The calculation method of the SCF threshold voltage is proposed, and the prediction method is established. Simulations show that the proposed method can predict SCF accurately and provide useful tools to suppress SCF.
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来源期刊
CiteScore
20.10
自引率
8.20%
发文量
43
审稿时长
4 weeks
期刊介绍: Protection and Control of Modern Power Systems (PCMP) is the first international modern power system protection and control journal originated in China. The journal is dedicated to presenting top-level academic achievements in this field and aims to provide a platform for international researchers and engineers, with a special focus on authors from China, to maximize the papers' impact worldwide and contribute to the development of the power industry. PCMP is sponsored by Xuchang Ketop Electrical Research Institute and is edited and published by Power System Protection and Control Press. PCMP focuses on advanced views, techniques, methodologies, and experience in the field of protection and control of modern power systems to showcase the latest technological achievements. However, it is important to note that the journal will cease to be published by SpringerOpen as of 31 December 2023. Nonetheless, it will continue in cooperation with a new publisher.
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