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| 摘要: |
| 介绍了辐射线运行时保护装置的整定原则和运行要求。对于临时辐射线．由于很多保护装置的全线速动能力和末端保护的选相能力不能满足辐射线运行要求，传统方法一般按照辐射原则处理。这样做一方面常常需要改定值，压缩后备段保护时间以满足系统稳定的要求；而另一方面，线路配置的保护资源得不到发挥。分析了常见线路保护装置在辐射线运行时的性能．在此基础上总结出不同装置配合使用时的效果，以尽可能充分发挥装置的功能，提高高频保护投入率．同时减少不必要的操作，以提高电力系统安全运行水平。 |
| 关键词: 单电源 辐射线路 保护 |
| DOI： |
| 分类号:TM773 |
| 基金项目: |
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| Single supply line protection operation analysis for south Hebei grid |
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ZHU Hui
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| Abstract: |
| The setting principle and operational requirements of protection system running in radial line mode are introduced. In respect of temporary radial lines,the traditional methods for single supply radial lines are applied because the competence of all-line acceleration and fault phase selection are not suitable for radial lines. In such a way,the zone times have to be reduced often to meet the stability requirements,while the equipment resources are wasted. The performances of common line protections in radial line are analyzed,based on which the cooperative application effectiveness of different protections is summarized for the full use of their functions to reduce the unnecessary operations and improve system operation security. |
| Key words: single supply,radial line,protection, |
