CAJ | 학술논문

人工污秽试验是研究污闪特性的重要手段,IEC及我国标准推荐了多种人工污秽试验方法以进行绝缘子闪络特性的试验研究,并提出了几种不同的试验方式,目前常用的有均匀升压法、50%耐受电压法和最大耐受法,但对于不同试验方式下绝缘子污闪特性的差异仍需进行系统研究和比较.为了研究不同试验方式下绝缘子污闪特性的差异,以两种典型的瓷(XP-160)和玻璃(LXY_4-160)绝缘子为例,在人工雾室中对3种不同试验方式下绝缘子污闪特性进行了分析和比较.试验结果表明:不同试验方式下绝缘子的闪络特性有一定的差异.不同污秽程度下,均匀升压法得到的污闪电压U_(av)比50%耐受电压法得到的污闪电压U_(50%)升高了4.27%～12.62%,U_(50%)比最大耐受电压法得到的污闪电压U_(ws)升高了3.94%～13.20%.随着污秽程度的增大,U_(av)相对U_(50%)提高的百分比和U_(50%)相对于U_(ws)提高的百分比均逐渐增大.
인공오예시험시연구오섬특성적중요수단,IEC급아국표준추천료다충인공오예시험방법이진행절연자섬락특성적시험연구,병제출료궤충불동적시험방식,목전상용적유균균승압법、50%내수전압법화최대내수법,단대우불동시험방식하절연자오섬특성적차이잉수진행계통연구화비교.위료연구불동시험방식하절연자오섬특성적차이,이량충전형적자(XP-160)화파리(LXY_4-160)절연자위례,재인공무실중대3충불동시험방식하절연자오섬특성진행료분석화비교.시험결과표명:불동시험방식하절연자적섬락특성유일정적차이.불동오예정도하,균균승압법득도적오섬전압U_(av)비50%내수전압법득도적오섬전압U_(50%)승고료4.27%～12.62%,U_(50%)비최대내수전압법득도적오섬전압U_(ws)승고료3.94%～13.20%.수착오예정도적증대,U_(av)상대U_(50%)제고적백분비화U_(50%)상대우U_(ws)제고적백분비균축점증대.
The artificial pollution test is an important method for studying pollution flashover performance.Some different artificial pollution methods are adopted to study the pollution flashover performance in IEC and correlative standards,and several different manners of test are compared.The methods of uniform increase voltage,50% withstand voltage and maximum withstand voltage are commonly used, but the difference among them are not comparatively studied.Taking two types of typical porcelain(XP-160)and glass(LXY_4-160)standard insulators as examples,in order to study differences of insulator flashover performance under different manners,the AC pollution flashover performance of insulators under three different manners of test in the climate chamber was analyzed and compared.The test results show that there are some differences in the pollution flashover performance under different manners.Under different pollution degrees,the pollution flashover voltage of uniform increase voltage(U_(av))is4.27% to 12.62% higher than 50%withstand voltage(U_(50%)),U_(50%)is 3.94% to 13.20% higher than maximum withstand voltage(U_(ws)).Along with the increase of pollution degree,the increase percentage of Uav in comparison with U_(50%)and U_(50%)in comparison with Uws are gradually enlarged.