考虑到可再生能源影响的直流故障扰动下的发送系统过电压计算方法

IF 6.9 2区 工程技术 Q2 ENERGY & FUELS
Haoyue Gong;Jianbo Guo;Qiang Guo;Jian Zhang;Qinyong Zhou;Libo Zhang
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引用次数: 0

摘要

在可再生能源输电系统中,通过特高压直流产生的双极闭锁和换向故障将产生显著的临时过电压。本文分析了两种直流故障引起送端电网过电压的物理过程,建立了考虑可再生能源的直流过电压模型。根据送端电网的特点,分别分析了系统等效阻抗、可再生能源输出比例、可再生能源在低电压穿越过程中的有功和无功功率系数对过电压的影响,并构建了可再生能源输出比例与过电压约束下短路比之间的关系。结合实际电网送端典型输电系统和区域电网系统,验证了本文提出的模型和分析方法的有效性和实用性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Overvoltage Calculation Method for Sending System Under DC Fault Disturbance Considering the Influence of Renewable Energy
Bipolar blocking and commutation failure in the renewable energy transmission system through ultra-high voltage direct current will produce significant temporary overvoltage. This paper analyzes the physical process of sending end grid overvoltage caused by two types of DC faults and establishes a DC overvoltage model considering renewable energy sources. According to characteristics of the sending end grid, the influence of the system equivalent impedance, the proportion of renewable energy output, the active and reactive power coefficients of the renewable energy sources during the low voltage ride through process on the overvoltage is analyzed respectively, and the relationship between the proportion of renewable energy output and the short-circuit ratio under the overvoltage constraint is constructed. The validity and practicality of the model and analysis method proposed in this paper are verified by combining the typical transmission system at the sending end of the actual power grid and regional power grid systems.
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来源期刊
CiteScore
11.80
自引率
12.70%
发文量
389
审稿时长
26 weeks
期刊介绍: The CSEE Journal of Power and Energy Systems (JPES) is an international bimonthly journal published by the Chinese Society for Electrical Engineering (CSEE) in collaboration with CEPRI (China Electric Power Research Institute) and IEEE (The Institute of Electrical and Electronics Engineers) Inc. Indexed by SCI, Scopus, INSPEC, CSAD (Chinese Science Abstracts Database), DOAJ, and ProQuest, it serves as a platform for reporting cutting-edge theories, methods, technologies, and applications shaping the development of power systems in energy transition. The journal offers authors an international platform to enhance the reach and impact of their contributions.
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