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| 高压直流输电系统接地极过压保护机理及改进措施研究 | |
| 引用本文： | 冯鸫,罗海志,杨洁民,郭琦.高压直流输电系统接地极过压保护机理及改进措施研究[J].高压电器,2011,47(12):49-55. |
| 作者姓名： | 冯鸫 罗海志 杨洁民 郭琦 |
| 作者单位： | 1. 中国南方电网超高压输电公司检修试验中心,广州510663;华南理工大学电力学院,广州510640 2. 中国南方电网超高压输电公司南宁局,南宁,530028 3. 中国南方电网超高压输电公司天生桥局,兴义,562400 4. 南方电网科学研究院,广州,510080 |
| 摘 要： | 笔者主要分析贵广二回直流输电系统接地极过压保护动作情况,并提出改进措施.首先介绍了接地极过压保护(59EL)原理及动作后果；然后介绍了接地极过压保护(59EL)的保护逻辑,通过分析贵广二回直流在调试过程中59EL保护的动作情况,指出了目前运行中的接地极过压保护的缺陷.为消除保护逻辑缺陷,避免接地极过压保护(59EL)误... |
| 关 键 词： | 直流输电工程 接地极过压保护 直流极控系统 直流站控系统 改进措施 实时数字仿真 |
Principle and Improvement of the Earth Electrode Overvoltage Protection for an HVDC Project |
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| FENG Dong,LUO Hai-zhi,YANG Jie-min,GUO Qi.Principle and Improvement of the Earth Electrode Overvoltage Protection for an HVDC Project[J].High Voltage Apparatus,2011,47(12):49-55. | |
| Authors: | FENG Dong LUO Hai-zhi YANG Jie-min GUO Qi |
| Abstract: | The principle of the earth electrode overvoltage protection of the Gui-GuangⅡ HVDC Project is analyzed,and the protection logic of the earth electrode overvoltage protection(59EL) is described.Through analyzing the behaviour of 59EL in the commissioning process of the Gui-GuangⅡ HVDC Project,the bugs in the 59EL are found.In order to eliminate the bugs in protection logic,avoid the monopolar block or even bipolar blocks due to misoperation of 59EL,and improve the reliability of HVDC operations,some improvement solutions are offered for modifying 59EL logic in the Gui-GuangⅡ HVDC Project,and improving the programs of pole control system and DC station control system.In addition,RTDS simulations are conducted to verify the proposed improvement solutions. |
| Keywords: | HVDC earth electrode overvoltage protection pole control DC station control improvement solution RTDS simulation |
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