零序滤波器立体结构设计与阻抗计算
针对配电网零序电流的特点提出一种三角形立体式结构的零序滤波器。立体式结构中铁芯柱在空间呈三角形对称分布,相较于传统的平面式结构具有三相对称磁路,解决了三相不平衡问题,并且使得三相零序磁通大小一致,提高了滤波效果。零序阻抗值是零序滤波器设计的一个重要参数,直接影响到滤波效果。在对零序磁通分布理论分析的基础上,给出立体结构零序滤波器在ANSYS中的二维简化模型,并采用能量法对零序阻抗进行数值计算。最后通过实验验证了该方法的正确性,为立体结构的零序阻抗计算提供了一种有效的工程应用的方法。...
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| Published in | 电力系统保护与控制 Vol. 44; no. 11; pp. 123 - 128 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
华北电力大学新能源电力系统国家重点实验室 华北电力大学,北京,102206
2016
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1674-3415 |
| DOI | 10.7667/PSPC151208 |
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| Summary: | 针对配电网零序电流的特点提出一种三角形立体式结构的零序滤波器。立体式结构中铁芯柱在空间呈三角形对称分布,相较于传统的平面式结构具有三相对称磁路,解决了三相不平衡问题,并且使得三相零序磁通大小一致,提高了滤波效果。零序阻抗值是零序滤波器设计的一个重要参数,直接影响到滤波效果。在对零序磁通分布理论分析的基础上,给出立体结构零序滤波器在ANSYS中的二维简化模型,并采用能量法对零序阻抗进行数值计算。最后通过实验验证了该方法的正确性,为立体结构的零序阻抗计算提供了一种有效的工程应用的方法。 |
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| Bibliography: | distribution system; zero sequence filter; symmetrical magnetic circuit; energy method; ANSYS; impedance calculation According to the characteristics of the zero-sequence current in the distribution system, a stereoscopic zero sequence filter structure is proposed. The icon cores are symmetrically arranged in a triangular space. Compared to the conventional planar reactor, the triangular structure has a symmetrical magnetic circuit which can solve the problem of the three-phase imbalance and enable three-phase zero sequence flux to be consistent. In the zero-sequence filter, the value of the zero sequence impedance is an important parameter which has a direct impact on the filtering effect. In order to obtain an accurate zero sequence impedance for the structural design, the distribution of the zero-sequence flux is theoretically analyzed, and a simplified symmetric model in ANSYS is given. Then the zero-sequence impedance is calculated using the energy method based on the ANSYS software. Finally an experiment |
| ISSN: | 1674-3415 |
| DOI: | 10.7667/PSPC151208 |