CAJ | 학술논문

电力系统复合绝缘子闪络故障往往与有风天气状态有关,除因风引起的风偏闪络外,本文统计发现低风速状态下仍存在一定数量的复合绝缘子闪络故障,而目前有关不同风速及风向对复合绝缘子闪络特性的研究数据尚十分缺乏。为了研究风速和风向对复合绝缘子闪络电压的影响,在风洞试验室搭建了工频闪络特性试验平台,来模拟自然界中不同风速和风向,通过复合绝缘子人工闪络试验,获得了不同风速及风向条件下复合绝缘子的闪络电压。结果表明,不同的风向角下复合绝缘子闪络电压会随风速的增加而升高,绝缘子闪络电压受风向角影响明显,风向角越接近90°,闪络电压越高,紫外摄像表明空气流对复合绝缘子闪络的形成和发展起到抑制作用。研究结果有助于指导对复合绝缘子闪络故障的现场分析。
전력계통복합절연자섬락고장왕왕여유풍천기상태유관,제인풍인기적풍편섬락외,본문통계발현저풍속상태하잉존재일정수량적복합절연자섬락고장,이목전유관불동풍속급풍향대복합절연자섬락특성적연구수거상십분결핍。위료연구풍속화풍향대복합절연자섬락전압적영향,재풍동시험실탑건료공빈섬락특성시험평태,래모의자연계중불동풍속화풍향,통과복합절연자인공섬락시험,획득료불동풍속급풍향조건하복합절연자적섬락전압。결과표명,불동적풍향각하복합절연자섬락전압회수풍속적증가이승고,절연자섬락전압수풍향각영향명현,풍향각월접근90°,섬락전압월고,자외섭상표명공기류대복합절연자섬락적형성화발전기도억제작용。연구결과유조우지도대복합절연자섬락고장적현장분석。
Composite insulator flashover in power system is often related to windy weather.Besides flashover caused by windage yaw,we found that a certain number of composite insulator flashover faults still exist under the condition of low wind speed.For the lack of references that focus on the influence of air flow on composite insulators flashover voltage at home and abroad,and to study the influences of wind speed and direction on composite flashover voltage,we set up flashover platform in the wind tunnel laboratory to simulate different wind speed and direction in nature,and we obtained a relationship of wind speed,wind direction and the composite insulator flashover voltage through a large number of artificial flashover tests.The test results confirm that flashover voltage of composite insulators increases with wind speed.Flashover voltage is influenced by wind angle,and the closer of wind angle to 90°,the higher flashover voltage is.Air flow inhibits the formation and development of insulator flashover.The obtained ultraviolet results can be used to analyze composite insulator flashover accidents.