钢铁企业经消弧线圈接地方式在10 kV配电网中的应用  

Application of Steel Enterprises Via Arcing Coil Grounding Method in 10 kV Distribution Network

作　　者：孟凡亮 Meng Fanliang(Energy Department of Beijing Shougang Co.,Ltd.,Qian'an Hebei 064400,China)

机构地区：[1]北京首钢股份有限公司能源部,河北迁安064400

出　　处：《现代工业经济和信息化》2024年第6期177-180,共4页Modern Industrial Economy and Informationization

摘　　要：分析了不同接地系统单相接地前后的变化情况,及10 kV供电系统经消弧线圈接地的优缺点,提出了在钢铁企业10 kV供电系统采用经消弧线圈接地系统的应用,结合企业发生的事故阐述由于系统对地电容大,发生单相接地时,故障点处易产生电弧,并发展为相间短路。同时出现间歇性电弧,发生串联谐振过电压,对整个系统的绝缘构成威胁。最终得出的结论是,在钢铁企业10 kV供电系统选择接地变及消弧线圈装置,钢铁企业的供电安全得到很大的提高。This paper analysed the changes in different grounding systems before and after the single-phase grounding,and the advantages and disadvantages of the 10 kV power supply system grounded by the arc-cancelling coil.Proposed in the iron and steel enterprises 10 kV power supply system by arcing coil grounding system application,combined with the accident occurred in the enterprise elaboration due to the system capacitance to ground is large,the occurrence of single-phase grounding,the fault point is easy to produce arc,and develop into a phase-to-phase short circuit.At the same time,intermittent arcing occurs and series resonance overvoltage occurs,posing a threat to the insulation of the entire system.It is finally concluded that the safety of power supply in steel enterprises is greatly improved by selecting grounding transformer and arcing coil device in 10 kV power supply system of steel enterprises.

关 键 词：钢铁企业 消弧线圈 优缺点 

分 类 号：TM862[电气工程—高电压与绝缘技术]