| 引用本文: | 任师铎,肖浩,李银红.高压直流输电线路行波保护实用整定原则[J].电力自动化设备,2019,39(9): |
| REN Shiduo,XIAO Hao,LI Yinhong.Practical setting principle of traveling wave protection for HVDC power transmission line[J].Electric Power Automation Equipment,2019,39(9): |
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| 摘要: |
| 现阶段行波保护缺乏成熟整定原则，导致整定计算效率不足且隐藏误整定因素。基于此，提出高压直流输电线路行波保护的实用整定原则。考虑直流输电线路区内、区外不同故障类型，分析了直流线路端口电压变化率、电压变化量、电流变化量的故障响应特性；揭示了行波保护电压变化率、电压变化量、电流变化量动作判据的功能，分析了各动作判据的逻辑配合关系；考虑保护灵敏性和选择性要求，提出了各动作判据定值的实用整定原则。基于PSCAD/EMTDC仿真平台验证了所提整定原则的有效性。 |
| 关键词: 高压直流输电线路 继电保护 行波保护 故障响应特性 动作判据 保护整定原则 |
| DOI：10.16081/j.epae.201909031 |
| 分类号:TM77 |
| 基金项目:国家自然科学基金资助项目(51907067) |
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| Practical setting principle of traveling wave protection for HVDC power transmission line |
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REN Shiduo, XIAO Hao, LI Yinhong
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State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
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| Abstract: |
| The existing traveling wave protection is still with the problems of incorrect setting and inefficiency of setting calculation, since the lack of empirical unified setting principle. On this basis, the practical setting principle of traveling wave protection for HVDC power transmission line is proposed. Considering the different types of internal and external faults in HVDC power transmission lines, the dynamic response characteristics of voltage change ratio dUd/d t, voltage variation ΔUd and current variation ΔId are analyzed and the function of the traveling wave protection criterions based on dUd/d t,ΔUd,ΔId are revealed. Consi-dering the requirements of traveling wave protection for sensitivity and selectivity, a practical setting principle of traveling wave protection is proposed. The validity of the proposed criterion is verified by PSCAD/EMTDC simulation platform. |
| Key words: HVDC power transmission line relay protection traveling wave protection fault response characteristic action criterion protection setting principle |
