| 串联型可控饱和电抗器谐波特性分析 |
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| 引用本文： | 牟宪民,魏晓霞,纪延超,胡泰.串联型可控饱和电抗器谐波特性分析[J].电力自动化设备,2007,27(3):14-17. |
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| 作者姓名： | 牟宪民 魏晓霞 纪延超 胡泰 |
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| 作者单位： | 1. 哈尔滨工业大学,电气工程及自动化学院,黑龙江,哈尔滨,150001
2. 广东电网公司,江门鹤山供电局,广东,鹤山,529700 |
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| 摘 要： | 可控饱和电抗器在动态无功补偿、电机软启动、小电流接地选线等方面具有广阔的应用前景。针对电工硅钢片的特点,将基本磁化曲线简化为2条具有不同斜率的折线。采用傅里叶级数的分析方法对串联型可控饱和电抗器的谐波特性进行详细分析,获得了其电流谐波特性。通过定义饱和度的概念,推导出了可控饱和电抗器输出电流傅氏系数及总谐波畸变率同饱和度之间的关系。利用Matlab软件建立仿真模型,仿真结果验证了理论分析的正确性。最后,对串联型可控饱和电抗器谐波抑制的途径进行了探讨。
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| 关 键 词： | 可控饱和电抗器 磁化曲线 分段映射 无功补偿 谐波分析 |
| 文章编号： | 1006-6047（2007）03-0014-03 |
| 收稿时间： | 2006-04-07 |
| 修稿时间： | 2006-04-072006-08-07 |
Harmonic characteristic analysis of serial controllable saturated reactor |
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| MU Xian-min,WEI Xiao-xi,JI Yan-chao,HU Tai.Harmonic characteristic analysis of serial controllable saturated reactor[J].Electric Power Automation Equipment,2007,27(3):14-17. |
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| Authors: | MU Xian-min WEI Xiao-xi JI Yan-chao HU Tai |
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| Affiliation: | 1. Harbin Institute of Technology,Harbin 150001,China; 2. Heshan Power Supply Bureau of Guangdong Power Grid Corporation,Heshan 529700,China |
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| Abstract: | Controllable saturated reactor is widely used in dynamic reactive power compensation,induction motor soft-starting and fault line selection of small current grounding system.The magnetizing curve of silicon steel sheet approximated as a two-section line and the harmonic characteristics of serial controllable saturated reactor are analyzed in detail using Fourier series method.With the definition of saturation degree,the expression of Fourier coefficient and the relationship between THD(Total Harmonic Distortion) and magnetic saturation degree are derived.Simulation with Matlab / Simulink proves the validity of this theoretical analysis.Feasible methods to eliminate harmonics are discussed. |
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| Keywords: | controllable saturated reactor magnetizing curve subsection mapping reactive power compensation harmonic analysis |
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