CAJ | 학술논문

复合绝缘带电是否会对绝缘子盐密（ESDD）和灰密（NSDD）值产生影响关系到电力系统污秽复合外绝缘配置,开展带电复合绝缘子与不带电复合绝缘子积污对比观测有助于研究复合绝缘子带电与不带电运行积污规律。为此,选择深圳地区22处代表性的输电杆塔上进行带电与不带电复合绝缘子挂样观测,测量了积污期为2a的复合绝缘子盐密、灰密和灰密盐密比,对比了带电与不带电复合绝缘子上表面、下表面与单片均值积污规律的差别。结果表明：带电与否对复合绝缘子上表面盐密基本无影响,下表面盐密值约增加0.3倍,片均值约增加0.1倍;带电复合绝缘子盐密片均值与不带电复合绝缘子上、下表面盐密值有较好的线性关系;带电运行对复合绝缘子灰密值有影响,带电有利于不溶灰份的积累,上表面灰密增加0.4倍,下表面增加约0.7倍,片均值增加约0.5倍。带电绝缘子的灰密盐密比更大。带电复合绝缘子积污特性的对比观测数据为实验室开展复合绝缘子污闪试验工况及现场外绝缘配置考虑带电因素提供了基础数据。
복합절연대전시부회대절연자염밀（ESDD）화회밀（NSDD）치산생영향관계도전력계통오예복합외절연배치,개전대전복합절연자여불대전복합절연자적오대비관측유조우연구복합절연자대전여불대전운행적오규률。위차,선택심수지구22처대표성적수전간탑상진행대전여불대전복합절연자괘양관측,측량료적오기위2a적복합절연자염밀、회밀화회밀염밀비,대비료대전여불대전복합절연자상표면、하표면여단편균치적오규률적차별。결과표명：대전여부대복합절연자상표면염밀기본무영향,하표면염밀치약증가0.3배,편균치약증가0.1배;대전복합절연자염밀편균치여불대전복합절연자상、하표면염밀치유교호적선성관계;대전운행대복합절연자회밀치유영향,대전유리우불용회빈적적루,상표면회밀증가0.4배,하표면증가약0.7배,편균치증가약0.5배。대전절연자적회밀염밀비경대。대전복합절연자적오특성적대비관측수거위실험실개전복합절연자오섬시험공황급현장외절연배치고필대전인소제공료기출수거。
Equivalent salt deposit density(ESDD) and non soluble deposit density(NSDD) are the basic data for outer-insulation coordination and pollution distribution classification,and it is hard to obtain the contamination data of charged composite insulator.In order to study the contamination characteristics on charged and uncharged composite insulator,we selected 22 transmission towers representing typical distribution as the contrast observation positions for composite insulator of charged and uncharged,measured ESDD,NSDD and the ratio of NSDD to ESDD of composite insulator with 2 years contamination time,and compared the difference of natural contamination characteristics of composite insulator of charged and uncharged.The results show that,the upper surface ESDD of composite insulator is not influenced whether it is charged or not.the lower surface ESDD of charged composite insulator is about 1.3 times that of uncharged one;the single insulator ESDD average value is about 1.1 times that of uncharged one;there is a good relation between the ESDD average value of composite insulator charged with the upper and lower surface ESDD of that uncharged;the upper surface NSDD of composite insulator charged is 0.4 times higher than that the uncharged,the lower surface NSDD is 0.7 times higher and the NSDD average value is about 0.5 times higher than that of the uncharged;the ratio of NSDD to ESDD of charged is higher than that of the uncharged.