中压开关设备复合绝缘及固体绝缘技术研究  

Research on Insulation Technology of Medium and High Voltage Switchgear

作　　者：纪江辉 张杰[1] 王小丽[1] 李文峰[1] 李炎光[1] 

机构地区：[1]许继集团有限公司,河南许昌461000

出　　处：《电工电气》2015年第6期23-26,29,共5页Electrotechnics Electric

摘　　要：针对中压开关设备产品在小型化过程中产品绝缘距离存在安全隐患的情况,研究了绝缘层外表面接地以及不同高压绝缘介质不同厚度对电场分布的影响,建立了数学模型,并采用电场有限元Infolytica Elec Net软件进行电场仿真。试验结果证明,使三相高压设备的单相高压导体外绝缘表面接地或合理设计多介质的不同厚度可以降低三相设备相间或对地的安全绝缘距离,达到了设计要求。Aiming at the conditions that there exist potential safety hazards for production insulation distance during the process of me-dium voltage switchgear miniaturization, this paper researched on insulating layer surface earthing and the impacts of different high voltage insulating medium with different thickness on electric ifeld distribution, and established a mathematical model, adopting electric ifeld ifnite element software Infolytica ElecNet to simulate electric ifeld. Test results show that under the same conditions, the insulating surface of sin-gle phase high voltage conductor in three-phase high voltage equipment is earthed or the thickness of multi medium is reasonable designed to reduce safe insulation distance between poles of three-phase equipment or poles to earth, so as to meet the requirements of design.

关 键 词：中压开关 有限元 小型化 绝缘技术 电场优化 绝缘表面接地 

分 类 号：TM564[电气工程—电器]