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| 摘要: |
| 分析了几种常用消弧装置对配电网中内部过电压防护的作用和效果;综合考虑了变电站、开闭所接地选线的实现,以及配电网自动化系统中接地故障区段定位等问题;结合现场运行实践,给出了消弧装置应用的指导原则和技术建议。提出了对于电缆化比例较大的配电网,宜选用自动跟踪补偿消弧装置,为了实现可靠接地保护及区段定位,短时加并中值电阻是一种较好的解决方案;延时加并高值电阻方案,也值得进一步研究;建议对于以架空线路为主的配电网,可以考虑选用新型消弧及过电压保护装置,并对该装置加以完善。 |
| 关键词: 配电网,消弧装置,过电压防护,接地选线与定位 |
| DOI： |
| 分类号:TM727 TM864 |
| 基金项目: |
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| On arc suppression device applications in distribution network |
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ZHENG Peng-peng
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| Abstract: |
| Effects of some arc suppression devices on internal over-voltage protection of distribution network are analyzed.The grounded line selection of substation and switching station and the fault section locating in distribution network automation system are included.Combining with field practices,the application rules and technical advices are presented for arc suppression devices.For the distribution networks with more cable connections,it is better to use the arc suppression devices with automatic compensation.For reliable grounding protection and fault section location,temporary connection of a medium resistance in parallel is a better solution,while delayed connection of a high resistance in parallel is also a solution.For the distribution networks with more overhead lines,new type arc suppression and over-voltage protection devices can be considered,which need further improvements. |
| Key words: distribution network,arc suppression device,over-voltage protection,grounded line selection and fault locating |
