| 引用本文: | 潘书燕,吕良君,杨佳,吴仕平.变压器低压侧故障远后备保护分析及解决方案[J].电力自动化设备,2009,(2): |
| .Analysis of remote backup protection for transformer low-side fault and resolution[J].Electric Power Automation Equipment,2009,(2): |
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| 摘要: |
| 对于线路一变压器接线形式的110 kV线路保护的远后备保护,保护的范围为变压器低压侧母线处故障情况下,须考虑到由于变压器的接线组别、变压器的阻抗值等情况对线路保护元件的影响.针对变压器低压侧母线处故障时进行了详细的分析,根据故障时的正、负序电压和电流等分析,采用了不反应负荷阻抗、三相短路、系统振荡的多相补偿阻抗继电器和仅反应三相短路的上抛圆特性阻抗继电器相结合的解决方案,并进行了完整的变压器远后备保护方案的分析和Hypersim验证,不论从软件算法上、可靠性上都给予肯定,而且整定简单.便于现场运行实施. |
| 关键词: 多相补偿阻抗继电器 上抛圆特性阻抗继电器 变压器 远后备保护 线路保护 |
| DOI： |
| 分类号:TM773 |
| 基金项目: |
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| Analysis of remote backup protection for transformer low-side fault and resolution |
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PAN Shuyan LU Liangjun YANG Jia WU Shiping
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| Abstract: |
| The influences of line-transformer connection mode and transformer impedance on the remote back-up protection of 110 kV transmission line should be considered when the protective area covers the faults of transformer low-side bus,for which the detailed analysis is proposed.Based on the analysis of positive and negative sequence voltage and current under fault,a scheme that integrates the multi-phase compensation impedance relay,which is immune to load impedance,three-phase fault and system swing, and the up... |
| Key words: multi-phase compensation impedance relay up-parabolic circular characteristic impedance relay remote backup protection line protection |
