CAJ | 학술논문

复合绝缘子高压端输电导线上安装绝缘护套能够改善高压端的电场强度,但对其污闪特性的影响国内外尚未有相关的研究报道。研究了复合绝缘子高压端输电导线安装绝缘护套结构在染污受潮情况下的物理模型,分析了护套参数对绝缘子污闪特性的影响,得出了安装优化参数的绝缘护套能够改善复合绝缘子污闪特性的结论。在理论研究的基础上,试验研究了复合绝缘子污闪电压与绝缘护套长度的关系,并给出了适合现场复合绝缘子的较优的绝缘护套参数以及安装该参数绝缘护套后复合绝缘子污闪电压与等值盐密的关系曲线。最后,该较优参数的绝缘护套由厂家生产并安装在现场复合绝缘子上,一年时间的运行结果证实了安装该参数绝缘护套能够改善现场复合绝缘子的外绝缘性能。
복합절연자고압단수전도선상안장절연호투능구개선고압단적전장강도,단대기오섬특성적영향국내외상미유상관적연구보도。연구료복합절연자고압단수전도선안장절연호투결구재염오수조정황하적물리모형,분석료호투삼수대절연자오섬특성적영향,득출료안장우화삼수적절연호투능구개선복합절연자오섬특성적결론。재이론연구적기출상,시험연구료복합절연자오섬전압여절연호투장도적관계,병급출료괄합현장복합절연자적교우적절연호투삼수이급안장해삼수절연호투후복합절연자오섬전압여등치염밀적관계곡선。최후,해교우삼수적절연호투유엄가생산병안장재현장복합절연자상,일년시간적운행결과증실료안장해삼수절연호투능구개선현장복합절연자적외절연성능。
The method of installing insulation jacket on transmission line conductor can improve the electric field strength of high potential side of composite insulator,but the influences of composite insulator on pollution flashover characteristics have not been made a detailed study until today.In this article,the physical model of composite insulator with insulation jacket was studied in the case of wet contamination,the effects of insulation jacket parameters were analyzed and the conclusion that installing the optimization parameters insulation jacket on transmission line conductor can improve the pollution flashover characteristics of composite insulator was drawn.Furthermore,the correlation between the insulation jacket＇ length and the contamination flashover voltage of composite insulator was obtained by the artificial test.Based on the test results,the optimization insulation jacket parameters are suggested and the relationship curve of contamination flashover voltage of composite insulator installed the suggested insulation jacket and the equivalent salt deposit density（ESDD） was also given.The insulation jackets manufactured according to the optimization parameters were installed onto the transmission line conductor in the field.During one year of operation,the positive effects on the electric field distribution and the reliability of the installed insulation jackets have been confirmed.