| 基于采样值相关法的双回线无通道保护 |
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| 引用本文： | 李志雷,张举,王兴国.基于采样值相关法的双回线无通道保护[J].电力系统自动化,2006,30(6):70-73,91. |
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| 作者姓名： | 李志雷 张举 王兴国 |
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| 作者单位： | 华北电力大学电气工程学院,河北省,保定市,071003 |
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| 摘 要： | 为了在平行双回线上实现利用单端电气量的全线速动保护,提出了一种基于故障电流相关度的无通道保护新原理,它通过比较双回线同端2条线路上的故障电流相关度的方法来判断是否为区内故障,同时和电流幅值相配合,构成无通道全线速动保护.该无通道保护可以快速、可靠地加速区内故障保护动作.通过ATP仿真,论证了所提出判据的可行性.
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| 关 键 词： | 平行双回线 无通道保护 相关度 |
| 收稿时间： | 2005-05-28 |
| 修稿时间： | 2005-05-282005-09-06 |
Non-communication Protection of Double-circuit Line Systems Based on Correlation Analysis |
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| LI Zhi-lei,ZHANG Ju,WANG Xing-guo.Non-communication Protection of Double-circuit Line Systems Based on Correlation Analysis[J].Automation of Electric Power Systems,2006,30(6):70-73,91. |
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| Authors: | LI Zhi-lei ZHANG Ju WANG Xing-guo |
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| Affiliation: | North China Electric Power University, Baoding 071003, China |
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| Abstract: | A new non communication protection scheme of double-circuit line based on the fault current correlation coefficient is proposed. It uses the balance between circuits to distinguish internal faults and external faults. The correlation algorithm adopts the current of circuits fault-phase as the criterion. Combined with the current magnitude, the non-communication protection is developed. ATP simulation proves the correction of the principle and analysis. |
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| Keywords: | double-circuit line non communication protection correlation coefficient |
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