“入土为安”防雷策略的研究与实践

地处高山的雷达站和自动气象站，以及高压变压器等设备非常容易遭受雷击，是因为设备供电一般是由架空高压线输送而来，架空高压线容易遭受直击雷或者感应雷入侵所致。为了有效防止高压变压器和末端设备遭受雷击，本文在不明显增加工程成本条件下，设计一套高压输电线路防雷策略，通过高压输电线路埋地方法，并运用LC低通滤波器理论证明埋地铺设方法的效果，实现了高山输电高压线路和末端设备有效防雷。实践表明，输电线缆可靠埋地，埋地长度越长防雷效果越好，一般要求埋地长度30 m以上，防雷效果就非常显著。

Put to rest prevent lightning strategies research and practice

Located in the mountains of radar and automatic weather stations ,and high‐voltage transformers and other equipment is very vulnerable to lightning ,because the device is powered by a normally transported from overhead power lines ,overhead power lines vulnerable to lightning caused by direct lightning strikes or intrusion .In order to effectively prevent the high voltage transformer and terminal equipment being struck by lightning ,the paper without significantly increasing the cost of the project conditions ,design a high voltage transmission line lightning strategy ,through high‐voltage transmission lines underground method ,and the use of LC low‐pass filter theory prove Buried laying effect method to achieve a high‐voltage transmission lines and terminal alpine effective lightning protection equipment . Practice shows that reliable transmission cable buried ,buried mine ,the better the longer the length ,generally require a length buried more than 30 meters ,lightning effect is very significant .