| 引用本文: | 李一泉,吴梓亮,王峰,曾耿晖,陈志光,罗跃胜,朱晓彤.基于Hausdorff距离算法的自适应线路差动保护方案[J].电力自动化设备,2019,39(7): |
| LI Yiquan,WU Ziliang,WANG Feng,ZENG Genghui,CHEN Zhiguang,LUO Yuesheng,ZHU Xiaotong.Self-adaptive differential protection scheme for transmission line based on Hausdorff distance algorithm[J].Electric Power Automation Equipment,2019,39(7): |
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| 摘要: |
| 为同时提高传统电流差动保护的速动性、灵敏性与安全性，提出一种基于Hausdorff距离算法的自适应线路差动保护方案。该方案应用Hausdorff距离算法对线路两侧电流进行实时短窗计算，并据此调整保护制动系数，以提高保护的耐受过渡电阻及抗电流互感器饱和能力，具有自适应、免整定的优良特性。基于PSCAD的仿真测试验证了所提方案的可行性及优越性。 |
| 关键词: 自适应 差动保护 继电保护 Hausdorff距离 高阻故障 电流互感器饱和 免整定 |
| DOI：10.16081/j.issn.1006-6047.2019.07.026 |
| 分类号:TM773 |
| 基金项目:广东电网有限责任公司科技项目(GDKJQQ-20161176) |
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| Self-adaptive differential protection scheme for transmission line based on Hausdorff distance algorithm |
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LI Yiquan1, WU Ziliang1, WANG Feng1, ZENG Genghui1, CHEN Zhiguang1, LUO Yuesheng1, ZHU Xiaotong2
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1.Key Laboratory for Protective Relaying Real Time Digital Simulation of Guangdong Power Grid, Controlling and Dispatching Center of Guangdong Power Grid, Guangzhou 510600, China;2.NR Engineering Co.,Ltd.,Nanjing 211102, China
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| Abstract: |
| In order to improve the speed, sensitivity and security of the traditional current differential protection at the same time, a self-adaptive line differential protection scheme based on Hausdorff distance algorithm is proposed. The Hausdorff distance algorithm is utilized to calculate the current on both sides of the transmission line in real time and short window. On this basis, the restraint coefficient of differential protection is regulated to enhance the tolerance capability of fault resistance and the current transformer saturation, which has the advantages of self-adaption and free-setting. The simulation tests based on PSCAD verify the feasibility and superiority of the proposed scheme. |
| Key words: self-adaption differential protection relay protection Hausdorff distance high-resistance fault current transformer saturation free-setting |
