1000kV交流输电线路污秽外绝缘设计方法的研究  

Research of Pollution Insulation Design Method for 1 000 kV A.C.Transmission Line

作　　者：房柯夫 吴光亚[2] 危鹏[3] 

机构地区：[1]华中电力物资有限责任公司,武汉430077 [2]国网武汉高压研究院,武汉430074 [3]国家绝缘子避雷器质量监督检验中心,西安710077

出　　处：《电瓷避雷器》2007年第3期1-4,共4页Insulators and Surge Arresters

摘　　要：不同国家对1000kV交流输电线路绝缘子污秽外绝缘的设计原则相同,但设计参数不同。从污秽绝缘子闪络概率、单个绝缘子最大耐受电压、污秽设计目标电压、绝缘子串几方面着手,将等值附盐密度ESDD校正到附盐密度SDD;结合单个绝缘子闪络概率、上下表面不均匀积污比、等值附灰密度、绝缘子形式以及串形对绝缘配置进行了校正。在此基础上,根据外绝缘设计方法,给出了CA-590EZ普通型绝缘子的配置方案:污秽耐受水平ESSD=0.06mg/cm2、NSSD=0.5mg/cm2时,单“I”形串为54片,双“I”形串为58片,单“V”形串为52片。The discussion on external insulation pollution design method for 1 000 kV A.C. transmission line is given in this paper. The computational formula for flashover probability of pollution insulators, max withstand voltage of single insulator, pollution design objective voltage, units of insulator string is given too. Considered the correction of ESDD, the design flashover probability of line, the correction of the non-uniform pollution ratio of top and down surface, the correction of NSDD, the correction of insulator type and string, the external insulation pollution design method is presented. According to the method, when ESSD=0.06 mg / cm^2, NSSD=0.5 mg / cm^2, the configuration scheme of single“I”string is 54 units and double “I”string is 58 units and single “V”string is 52 units consisted of CA-590EZ type insulator.

关 键 词：1000KV交流输电线路 绝缘子 污秽外绝缘设计 

分 类 号：TM85[电气工程—高电压与绝缘技术]