高压电器2025，Vol.61Issue(3)：96-104,9.DOI:10.13296/j.1001-1609.hva.2025.03.011
交流电压叠加正弦振动激励下GIS内亚毫米金属颗粒起始特性研究
Study on Sub-millimeter Metal Particle Initiation Characteristics in GIS Under AC Voltage Superimposed with Sinusoidal Vibration Excitation
摘要
Abstract
The metal particles generated in the Gas insulated metal-enclosed switchgear(GIS)is mainly the micron to sub-millimeter metal chips of such metal parts as screws and contacts due to friction and,in addition to the elec-tric filed during the operation of the equipment,is also subjected to the sinusoidal steady excitation.To this end,the AC voltage superimposed with sinusoidal vibration excitation test platform is set up,and the initial motion and discharge characteristics of sub-millimeter metal particles of different particle sizes under the action of AC voltage alone and AC voltage superimposed with sinusoidal vibration excitation are compared and studied.The study results show that the motion of sub-millimeter metal particles at initial stage is divided into such two stages as the initial jump and the stable jump.The initial jump is characterized by the small and rapid motion of individual particle,and the jump process before entering the stable jump stage is divided into such four stages as the initial jump,the re-jump,the collision-driven and the self-sustained jump.The effect of sub-millimeter metal particle size on the initial characteristics is significant,and the initial jump voltage,stable jump voltage and quenching voltage decrease and then increase with the decrease of the particle size.Compared with the condition of AC voltage,the initial jump volt-age,stabilized tripping voltage and quenching voltage are decreased to some extent after the superimposed sinusoi-dal vibration excitation.The discharge characteristics at the initial stage are studied by the pulse current method and ultrasonic method,and the results show that sinusoidal vibration excitation can significantly reduce the PDIV,which in turn weakens the partial discharge intensity at the initial stage.关键词
交流电压/正弦振动激励/亚毫米金属颗粒/起始特性Key words
AC voltage/sinusoidal vibration excitation/sub-millimeter metal particles/onset characteristic引用本文复制引用
牛勃,史天一,刘威峰,白涛,韩旭涛,吴旭涛,李军浩,王文忠..交流电压叠加正弦振动激励下GIS内亚毫米金属颗粒起始特性研究[J].高压电器,2025,61(3):96-104,9.基金项目
国网宁夏电力有限公司科技项目(5229DK230006).Project Supported by Science and Technology Project of State Grid Ningxia Electric Power Co.,Ltd.(5229DK230006). （5229DK230006）
