| 利用电流频率特性的VSC—HVDC直流输电线路纵联保护 |
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| 引用本文： | 宋国兵,蔡新雷,高淑萍,索南加乐,杨忠礼.利用电流频率特性的VSC—HVDC直流输电线路纵联保护[J].高电压技术,2011,37(8):1989-1996. |
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| 作者姓名： | 宋国兵 蔡新雷 高淑萍 索南加乐 杨忠礼 |
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| 作者单位： | 1. 西安交通大学电气工程学院,西安,710049
2. 河南新乡市供电公司,新乡,453002 |
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| 基金项目： | 国家自然科学基金(51037005)~~ |
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| 摘 要： | 直流输电线路具有相对于交流线路更强的固有频率信号。结合电压源换流器型直流输电（VSC—HVDC）的系统结构，可得固有频率值与线路长度具有明确的函数关系。区外故障时，两侧固有频率主频与线路全长相关，频率差理论上为零；区内故障时，固有频率主频与故障点位置相关，非中点故障时频率差为一很大的值。据此，提出了通过Prony算法对...
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| 关 键 词： | 电压源换流器型直流输电 直流输电线路 纵联保护 系统结构 固有频率 Prony算法 |
New Pilot Protection for VSC-HVDC Transmission Lines Using Natural Frequency Characteristic of Current |
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| SONG Guo-bing,CAI Xin-lei,GAO Shu-ping,SUONAN Jia-le,YANG Zhong-li.New Pilot Protection for VSC-HVDC Transmission Lines Using Natural Frequency Characteristic of Current[J].High Voltage Engineering,2011,37(8):1989-1996. |
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| Authors: | SONG Guo-bing CAI Xin-lei GAO Shu-ping SUONAN Jia-le YANG Zhong-li |
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| Affiliation: | SONG Guo-bing1,CAI Xin-lei1,GAO Shu-ping1,SUONAN Jia-le1,YANG Zhong-li2 (1.School of Electrical Engineering,Xi'an Jiaotong University,Xi'an 710049,China,2.Xingxiang Power Supply Company,Xinxiang 453002,China) |
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| Abstract: | The natural frequency signal of DC lines is more obvious than that of AC lines.Combining the system structure,it is found that the natural frequency of VSC-HVDC is related with line length.Theoretically,the natural frequency differential is zero for external fault and it is a huge value for the internal fault.Accordingly,a new pilot protection principle and its primary criterion for HVDC transmission line are proposed based on current spectrum analysis at both ends.For the dead zone at the midpoint of the l... |
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| Keywords: | VSC-HVDC HVDC transmission line pilot protection system structure natural frequency Prony algorithm |
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