间谐波源对地导纳对配电网并联谐振影响研究

doi:10.19781/j.issn.1673-9140.2022.03.011

首页 > 过刊浏览>2022年第37卷第3期 >94-101. DOI:10.19781/j.issn.1673-9140.2022.03.011

间谐波源对地导纳对配电网并联谐振影响研究
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                        10.19781/j.issn.1673-9140.2022.03.011
                    
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                        李博强李博强
武汉大学电气与自动化学院,湖北 武汉 430072
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刘开培刘开培
武汉大学电气与自动化学院,湖北 武汉 430072
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林焱林焱
国网福建省电力有限公司电力科学研究院,福建 福州 350007
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彭雅洁彭雅洁
武汉大学电气与自动化学院,湖北 武汉 430072
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黄道姗黄道姗
国网福建省电力有限公司电力科学研究院,福建 福州 350007
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林芳林芳
国网福建省电力有限公司电力科学研究院,福建 福州 350007
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秦亮秦亮
武汉大学电气与自动化学院,湖北 武汉 430072
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中图分类号:TM711
基金项目:国家电网有限公司总部科技项目(5400-201921142A-0-0-00)

Research on influence of admittance of inter-harmonic sources to ground on parallel resonance of distribution network

Author:

LI Boqiang
LI Boqiang
School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072 , China
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LIU Kaipei
LIU Kaipei
School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072 , China
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LIN Yan
LIN Yan
Electric Power Science Research Institute, State Grid Fujian Electric Power Co.,Ltd., Fuzhou 350007 , China
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PENG Yajie
PENG Yajie
School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072 , China
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HUANG Daoshan
HUANG Daoshan
Electric Power Science Research Institute, State Grid Fujian Electric Power Co.,Ltd., Fuzhou 350007 , China
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LIN Fang
LIN Fang
Electric Power Science Research Institute, State Grid Fujian Electric Power Co.,Ltd., Fuzhou 350007 , China
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QIN Liang
QIN Liang
School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072 , China
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摘要:

间谐波源对地导纳幅值很小,因此传统并联谐振分析一般忽略间谐波源对地导纳。如果间谐波源对地导纳对并联谐振的影响较大,则忽略间谐波源对地导纳可能会严重降低并联谐振分析结果的准确性。为证明并联谐振分析计入间谐波源对地导纳的必要性,该文基于IEEE 33节点配电网模型建立并联谐振测试系统,开展间谐波源对地导纳对配电网并联谐振影响的研究。基于模态分析法发现特定节点处间谐波源对地导纳能够明显影响并联谐振,通过灵敏度分析,发现在特定节点处间谐波源对地导纳虚部对并联谐振的影响较大,揭示了间谐波源对地导纳显著影响并联谐振的本质原因,并验证了配电网并联谐振分析计入间谐波源对地导纳的必要性。

关键词:间谐波源对地导纳;并联谐振分析;模态分析法;灵敏度分析

Abstract:

The admittance amplitude of inter-harmonic sources to ground is very small, so traditional parallel resonance analysis generally ignores the admittance of inter-harmonic sources to ground. However, if the admittance of inter-harmonic sources to ground has a greater influence on the parallel resonance to a high degree, ignoring the admittance of inter-harmonic sources to ground couldseriously reduce the accuracy of the parallel resonance analysis results.In order to prove the necessity of the parallel resonance analysis to include the admittance of inter-harmonic sources to ground, this paper establishes a parallel resonance test system based on the IEEE-33 nodes distribution network model, and carries out the research on the influence of admittance of inter-harmonic sources to ground on the parallel resonance of distribution network.Based on the modal analysis method, it is found that the admittance of inter-harmonic sources to ground at a specific node can significantly affect the parallel resonance. Through sensitivity analysis, it is found that the admittance imaginarypart of inter-harmonic sources to ground at a specific node has a greater influence on the high degree to the parallel resonance, which revealsthe reason why the admittance of inter-harmonic sources to ground can obviously affect the parallel resonance, and finally validatesthe necessity of including the admittance of inter-harmonic sources to ground in the parallel resonance analysis of distribution network.

Key words:admittance of inter-harmonic sources to ground;parallel resonance analysis;modal analysis;sensitivity analysis

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引用本文

李博强,刘开培,林焱,等.间谐波源对地导纳对配电网并联谐振影响研究[J].电力科学与技术学报,2022,37(3):94-101.
LI Boqiang, LIU Kaipei, LIN Yan, et al. Research on influence of admittance of inter-harmonic sources to ground on parallel resonance of distribution network[J]. Journal of Electric Power Science and Technology,2022,37(3):94-101.

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