摘要
针对电缆附件用硅橡胶材料的电树枝生长特性及其局部放电特性进行研究,总结了电树枝的不同生长阶段具有的放电特性。结果表明:电树枝的典型生长模式主要包括生长-滞长模式和生长-快速生长-击穿模式,前者多存在于丛状电树枝中,后者多存在于松枝状和树枝状电树枝中。电树枝生长过程包括起始期、生长期、滞长期和击穿期等。不同生长阶段具有不同的局部放电特性,为电力电缆在线监测提供了有利的理论依据。
The electrical tree growth and partial discharge characteristics of silicone rubber for cable accessories were studied, and the PD characteristics under different electrical tree growth stages were summarized. The results show that the typical growth pattern of electrical tree mainly contains growth-retardation pattern and growth-breakdown pattem, and the former mostly presents in bush-like trees, while the latter mostly presents in pine-like and branch-like trees. The electrical tree growing process includes tree initiation stage, tree growing stage, growing retardation stage, and breakdown stage. Different electrical tree growth stages have different PD characteristics, which provide helpful information to the power cable on-line monitoring.
作者
陈杰
周立
周远翔
张云霄
Chen Jie Zhou Li Zhou Yuanxiang Zhang Yunxiao(State Grid Jiangsu Electric Power Company Research Institute, Nanjing 211100, China State Key Laboratory of Control and Simulation of Power Systems and Generation Equipments, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China)
出处
《绝缘材料》
CAS
北大核心
2017年第3期70-74,共5页
Insulating Materials
基金
国家电网公司科技项目(<城市廊道电缆优化及运行技术研究>)
关键词
电树枝
硅橡胶
局部放电
生长期
滞长期
放电图谱
electrical tree
silicone rubber
partial discharge
growth pattern
growing retardation
PD pattern
