| 牵引变电所电能质量混合动态治理技术 |
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| 引用本文： | 张定华,桂卫华,王卫安,阳春华.牵引变电所电能质量混合动态治理技术[J].中国电机工程学报,2011(7). |
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| 作者姓名： | 张定华 桂卫华 王卫安 阳春华 |
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| 作者单位： | 中南大学信息科学与工程学院;变流技术国家工程研究中心; |
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| 基金项目： | 国家863高技术基金项目(2006AA05Z248); “十一五”国家科技支撑计划重大项目(2007BAA12B03)~~ |
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| 摘 要： | 为解决牵引变电所功率因数低,谐波含量及负序含量大的问题,结合有源和无源的优势,提出一种由多级大容量的晶闸管投切电容器和一台小容量静止无功发生器构成的低成本混合动态补偿系统:前者根据负载对无功功率进行分级补偿,后者对前者补偿差进行补偿,两者以2倍变比配置实现有源容量最小化。通过控制牵引所2个臂的无功功率以减少系统负序电流;同时根据静止无功发生器发出的无功功率,进行载波变频控制,提高对谐波的抑制效果。将该系统投入运行,对比分析投入前后电能质量参数,验证了所提方法的可行性和有效性。
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| 关 键 词： | 电能质量 牵引变电所 混合补偿 无功功率 谐波抑制 负序电流 |
Hybrid Dynamic Power Quality Compensation Technology for Traction Substation |
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| ZHANG Dinghua,GUI Weihua,WANG Weian,YANG Chunhua.Hybrid Dynamic Power Quality Compensation Technology for Traction Substation[J].Proceedings of the CSEE,2011(7). |
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| Authors: | ZHANG Dinghua GUI Weihua WANG Weian YANG Chunhua |
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| Affiliation: | ZHANG Dinghua1,GUI Weihua1,WANG Weian2,YANG Chunhua1(1.College of Information Science and Engineering,Central South University,Changsha 410083,Hunan Province,China,2.National Engineering Research Center of Converters,Zhuzhou 412001,China) |
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| Abstract: | In order to solve the traction substation power quality problem,including poor power factor,bad harmonic pollution,and large negative sequence current,considering the predominance of active and passive compensators,a low-cost hybrid dynamic compensation system constituted by classical large capacity thyristor switched capacitor(TSC) structure and a small static var generator(SVG) was proposed.The former was used to provide step compensation by laden reactive power,and the latter was used to compensate for t... |
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| Keywords: | power quality traction substation hybrid compensation reactive power harmonic suppress negative sequence current |
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