| 特高压输电线路继电保护特殊问题的研究 |
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| 引用本文： | 董新洲,苏斌,薄志谦,贺家李.特高压输电线路继电保护特殊问题的研究[J].电力系统自动化,2004,28(22):19-22. |
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| 作者姓名： | 董新洲 苏斌 薄志谦 贺家李 |
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| 作者单位： | 清华大学电机系,北京市,100084;AREVA输配电电能自动化与信息公司,斯塔福特,英国;天津大学电气与自动化工程学院,天津市,300072 |
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| 基金项目： | 国家自然科学基金资助项目(50077011，50377019)，国家自然科学基金国际合作基金资助项目(50140430686) |
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| 摘 要： | 探讨了有关特高压线路保护的2个特殊问题：一是保护动作顺序对限制线路过电压的必要性和效果；二是特高压长线分布电容引起的电容充电电流对差动保护的影响。理论分析和仿真结果表明：合理设置保护动作顺序可以有效限制故障开断过程中产生的过电压；未采取补偿措施的分相电流差动保护不适合于特高压长距离输电线路。
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| 关 键 词： | 特高压输电线 继电保护 分布电容 过电压 |
| 收稿时间： | 1/1/1900 12:00:00 AM |
| 修稿时间： | 1/1/1900 12:00:00 AM |
STUDY OF SPECIAL PROBLEMS ON PROTECTIVE RELAYING OF UHV TRANSMISSION LINE |
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| Dong Xinzhou,Su Bin,Bo Zhiqian,He Jiali.STUDY OF SPECIAL PROBLEMS ON PROTECTIVE RELAYING OF UHV TRANSMISSION LINE[J].Automation of Electric Power Systems,2004,28(22):19-22. |
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| Authors: | Dong Xinzhou Su Bin Bo Zhiqian He Jiali |
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| Abstract: | This paper discusses two special problems on relay protection of ultra-high voltage (UHV) transmission line: one is the effect of protection relay operation order on surge voltage, and another is the influence of charge current caused by distributed capacitances in UHV long transmission line on the current differential protection. Theoretical analysis and simulation results show that: adjusting protection relay operation order can effectively limit the surge voltage formed by the operation of circuit breaker, and the existed phase current differential protection with no compensation measurements is unsuitable for UHV transmission lines. |
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| Keywords: | ultra-high voltage (UHV) transmission line protective relaying distribution capacitance surge voltage |
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