| 韶关—广州段电气化牵引变电所越级跳闸的原因与处理对策 |
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| 引用本文： | 刘让雄,李日福.韶关—广州段电气化牵引变电所越级跳闸的原因与处理对策[J].铁道机车车辆,2011,31(6):122-124. |
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| 作者姓名： | 刘让雄 李日福 |
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| 作者单位： | 1. 广州铁路职业技术学院,广东广州,510430
2. 广深铁路股份有限公司 广州供电段,广东广州,510010 |
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| 摘 要： | 通过对韶关—广州段牵引变电所越级跳闸故障的分析检测,指出继电保护装置动作时限设置不合理是导致故障的原因,提出将馈线保护装置的阻抗Ⅱ段保护与过电流保护的动作时限由原设计的0.5s调整为0.4s,使主变27.5 kV单相低压过电流保护与该保护的动作时限级差△t由0.2s提高到0.3s.经此调整后满足了继电保护装置的选择性要...
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| 关 键 词： | 电气化铁路 牵引变电所 继电保护 动作时限 |
Causes and Solutions of Override Tripping in Traction Substations Between Shaoguan and Guangzhou |
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| LIU Rang-xiong
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LI Ri-fu.Causes and Solutions of Override Tripping in Traction Substations Between Shaoguan and Guangzhou[J].Railway Locomotive & Car,2011,31(6):122-124. |
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| Authors: | LIU Rang-xiong LI Ri-fu |
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| Institution: | LIU Rang-xiong1,LI Ri-fu2(1 Guangzhou Institute of Railway Technology,Guangzhou 510430 Guangdong,China,2 Guangzhou Power Supply Depot,Guangzhou-Shenzhen Railway Co.,Ltd.,Guangzhou 510010 Guangdong,China) |
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| Abstract: | By analyzing and testing override tripping faults in traction substations between Shaoguan-Guangzhou, this paper points out that unreasonable setting of time lag of action of protective relaying equipment is the cause of faults. And also it shows that adjusting time lag of action of impedance protection Ⅱ and over-current protection of the feeder from the designed 0. 5s to 0.4s may up grade difference At of time lag of action between 27.5 kV single phase low voltage over-current protection of the main transformer and that of the feeder from 0.25s to 0.3s. By this operation, not only selectivity of protective relaying equipment, but safety and reliability of traction power supply system can be guaranteed. |
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| Keywords: | electric railway traction substation relay protection time lag of action |
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