摘要
为了降低雷电对矿井架空线路的影响,提高煤矿供电安全,根据雷击类型和地面110 kV架空线路实况,提出"四道防线"改造措施。分别从安设避雷线、线路增设避雷器、降低杆塔与大地之间电阻3个方面提出了防雷改造技术方案,并制定了改造期间安全保护措施。通过对地面110 kV架空电线路改造,降低了雷电对架空线路的危害,确保了矿井正常生产。
In order to reduce the impact of lightning on mine overhead lines and improve the safety of power supply in coal mines, according to the types of lightning strikes and the actual situation of 110 kV overhead lines on the ground, the transformation measures of "four lines of defense" were put forward. The technical scheme of lightning protection transformation was put forward from three aspects: installing lightning arrester, adding lightning arrester to line and reducing resistance between tower and earth, and the safety protection measures during the transformation were formulated. Through the transformation of 110 kV overhead power line on the ground, lightning hazards on overhead power line were reduced, and normal production of mine was ensured.
作者
李娜
LI Na(Electric Power Center of Lu′an Group,Changzhi,Shanxi 046204,China)
出处
《机电工程技术》
2020年第3期209-211,共3页
Mechanical & Electrical Engineering Technology
关键词
供电
防雷
变压器
电阻
power supply
lightning protection
transformer
resistance
