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現代化工業企業的供电系統,多設置分散的車間变电所,使其接近負荷中心。变电所的型式,目前在我国設計机構中,大多学習苏联的裝置方法,采用与車間建筑物相結合的戶內变电所,变压器亦多装設在單独的房間內。戶內型变电所的优点是: (1)不受冬季多雪的影响。在雪層厚的地方,屋檐下常挂有冰溜,容易打坏戶外变压器的絕緣瓷瓶和母綫桥,有时有大丘积雪从屋頂上落下,也会使变压器运行受到妨害。因此变压器裝在室內,在供电运行和維护上是比較安全的。
The power supply system of modern industrial enterprises has set up a decentralized workshop substation to make it close to the load center. The types of substations are currently mostly studied in the design institutions of our country. They use Soviet installation methods and use indoor substations combined with workshop buildings. Transformers are also installed in separate rooms. The advantages of indoor substations are: (1) It is not affected by snowy winter. In places where the snow layer is thick, there are often ice slides under the eaves, which can easily damage the insulating porcelain and busbar bridges of outdoor transformers. Sometimes, snowfall from big hills falls from the roof, which can also hinder the operation of the transformer. Therefore, the transformer is installed indoors, and it is safer for power supply operation and maintenance.