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1.南瑞集团有限公司(国网电力科学研究院有限公司),江苏省南京市 211106
2.国家电网有限公司华东分部,上海市 200120
Received:18 February 2024,
Revised:2024-05-11,
Published Online:22 July 2024,
Published:10 September 2024
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黄锡芳,朱玲,李兆伟等.短时功率冲击下受端电网频率特性与对策[J].电力系统自动化,2024,48(17):130-140.
HUANG Xifang,ZHU Ling,LI Zhaowei,et al.Frequency Characteristics and Countermeasures of Receiving-end Power Grid Under Short-term Power Impact[J].Automation of Electric Power Systems,2024,48(17):130-140.
黄锡芳,朱玲,李兆伟等.短时功率冲击下受端电网频率特性与对策[J].电力系统自动化,2024,48(17):130-140. DOI: 10.7500/AEPS20240218001.
HUANG Xifang,ZHU Ling,LI Zhaowei,et al.Frequency Characteristics and Countermeasures of Receiving-end Power Grid Under Short-term Power Impact[J].Automation of Electric Power Systems,2024,48(17):130-140. DOI: 10.7500/AEPS20240218001.
随着新能源的接入和直流馈入受端电网规模的增大,制约频率安全的故障由直流闭锁等永久性功率冲击故障向短路故障等短时功率冲击故障转变,频率特性及对策适应性不明确。文中基于频率动态响应过程梳理关键要素含义,计及新能源、直流等动态响应过程分析短时功率冲击下关键要素特性的变化。结合关键要素对频率特性的影响,从最大频率变化率、最大频率偏差及到达时间、准稳态频率偏差和频率时空分布4个方面研究短时功率冲击下的频率特性。最后,探讨受端电网应对短时功率冲击下频率问题的对策。
With the increase of renewable energy integration and the scale of the DC feed-in receiving-end power grid
the frequency safety constraint faults change from permanent power impact faults such as DC blocking to short-term power impact faults such as short-circuit faults
and the frequency characteristics and the countermeasure adaptability are unclear. In this paper
the meaning of key factors is sorted out based on the frequency dynamic response process
and the changes in the characteristics of key factors under short-term power impact are analyzed considering the dynamic response processes such as renewable energy and DC. Combined with the influence of key factors on frequency characteristics
the frequency characteristics under short-time power impact are studied from four aspects
i.e.
the maximum frequency change rate
maximum frequency deviation and arrival time
quasi-steady state frequency deviation
and frequency spatio-temporal distribution. Finally
the countermeasures to the frequency problem under short-time power impact in receiving-end power grid are discussed.
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