| 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 |
| .Harmonic characteristic analysis of serial controllable saturated reactor[J].Electric Power Automation Equipment,2007,27(3):14-17 |
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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。 |
| 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 |
| DOI： |
| 分类号:TM761 |
| 基金项目: |
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| Harmonic characteristic analysis of serial controllable saturated reactor |
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MU Xian-min WEI Xiao-xia JI Yan-chao HU Tai
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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. |
| Key words: controllable saturated reactor,magnetizing curve,subsection mapping,reactive power compensation,harmonic analysis |
