摘要
文章从空气间隙理论取值、放电间隙的高海拔修正、对间隙放电试验的分析、覆冰条件下直流放电间隙等多方面探讨了云南昭通电网采用直流融冰工程时地线绝缘间隙的选择,认为本工程中当融冰电压为20kV和35kV时,最后间隙取值为120mm和150mm是合理的。
The paper, obtaining the value from air gap theory, high altitude correction of discharge gap and analysis of gap discharge test, discussed the selection of earthwire insulation gap under the condition of ice accretion on Yunnan grid during DC melting ice, and considered that for this project, as the melting ice voltages to be 20 kV and 35 kV, the gap should be 120 mm and 150 mm respectively.
出处
《湖北电力》
2012年第6期40-41,75,共3页
Hubei Electric Power
关键词
输电线路
地线
融冰
绝缘间隙
transmission line
earthwire
melting ice
insulation gap
