| 引用本文: | 王宁,袁杰,焦晋荣,贾清泉,石磊磊.直流配电网多变流器纹波谐振问题研究[J].电力自动化设备,2017,37(7): |
| WANG Ning,YUAN Jie,JIAO Jinrong,JIA Qingquan,SHI Leilei.Ripple resonance of DC distribution network with multiple converters[J].Electric Power Automation Equipment,2017,37(7): |
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| 摘要: |
| 纹波是直流配电网中一种典型的电能质量问题。纹波谐振不仅影响直流配电网的电能质量，还会危及系统的安全稳定运行。探究了纹波在直流侧网络结构中的谐振现象；对接入端交流侧出现电压畸变和三相不平衡等情况引起的纹波从机理上进行了分析；建立了含变流器的直流配电网的等效电路，推导了变流器接入个数及接入位置对纹波谐振的影响关系；考虑各变流器间的耦合作用，推导了各变流器之间的耦合系数，研究了耦合作用对纹波谐振的影响。仿真结果验证了理论分析和所建模型的正确性。 |
| 关键词: 直流配电网 电能质量 多变流器 纹波谐振 耦合作用 |
| DOI：10.16081/j.issn.1006-6047.2017.07.012 |
| 分类号:TM727 |
| 基金项目:国家自然科学基金资助项目(51477147,51607153)；河北省自然科学基金资助项目(E2016203268)；河北省教育厅基金资助项目(QN2015124) |
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| Ripple resonance of DC distribution network with multiple converters |
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WANG Ning1, YUAN Jie1, JIAO Jinrong1, JIA Qingquan1, SHI Leilei1,2
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1.Key Lab of Power Electronics for Energy Conservation and Motor Drive of Hebei Province, Yanshan University, Qinhuangdao 066004, China;2.State Grid Hebei Electric Power Company Xingtai Power Supply Branch, Xingtai 054001, China
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| Abstract: |
| Ripple is a typical power quality problem of DC distribution network and ripple resonance not only affects its power quality but also endangers its safe and stable operation. The phenomenon of ripple resonance in the DC-side network structure is studied. The ripple due to the voltage distortion and three-phase imbalance at the AC side of input port is analyzed in mechanism. The equivalent circuit of DC distribution network with multiple converters is established and the influences of their number and location on the ripple resonance are researched. The coupling coefficient between converters is deduced and the influence of coupling effect between converters on the ripple resonance is studied. Simulative results verify the validity of theoretical analysis and the established model. |
| Key words: DC distribution network power quality multiple converters ripple resonance coupling |
