移相型零序滤波器的仿真与实验  

Simulation and Experiments on Zero-sequence Filter Using Zig-zag Transformer

作　　者：宋祺鹏[1] 尹忠东[1] 单任仲[1] 乔琨[1] 周振华[1] 檀跃亭[2] 

机构地区：[1]华北电力大学电力系统保护和动态安全监控教育部重点实验室,北京市102206 [2]廊坊供电公司,河北省廊坊市065000

出　　处：《电力系统自动化》2008年第17期75-78,99,共5页Automation of Electric Power Systems

基　　金：国家自然科学基金资助项目(50777019)~~

摘　　要：为了消除不平衡和非线性负载在配电系统中性线上引起的零序电流,提出了一种利用曲折移相电抗器与阻零器相结合的零序谐波电流治理方案。通过对各种运行方式下的仿真和实验表明,曲折移相电抗器和阻零器的结合能在各种系统状况下有效滤除零序谐波电流。其结构简单,不受系统参数的影响,滤波效果明显,能显著改善电能质量,提高负荷的供电可靠性。To eliminate the zero-sequence harmonic currents in the neutral lines caused by unbalanced and nonlinear loads in the three-phase four-wire distribution power system, a novel zero-sequence harmonic current mitigation approach is proposed by integrating zig-zag transformer and zero-sequence damper together. The simulation and laboratory experiments under different operation conditions indicate that the proposed method can effectively eliminate the zero-sequence harmonic currents. It has simple configuration, and is not influenced by the system parameters. It can effectively filter out harmonics, and significantly improve the power quality and reliability.

关 键 词：零序滤波器 电能质量 中性线 曲折移相 阻零器 谐振 

分 类 号：TN713[电子电信—电路与系统]