The undergroundization of power distribution lines is a project of burying overhead lines into underground pipelines.

In the process of undergroundization, in addition to considering the load and population density, the power distribution equipment originally installed on the poles is changed to be installed on the ground.

Therefore, it is also necessary to assess whether there is enough public land with sufficient space and size according to the current road conditions to install power distribution equipment.

It is also necessary to consider the wishes and feelings of residents and other case reviews.

During the construction of underground engineering, a road excavation permit must be approved by the road competent authority.

However, the manhole cover installed after undergrounding is often buried due to road-smoothing project, which is not conducive to subsequent line maintenance and emergency repairs, and affects the reliability and safety of power supply.

The cost of underground construction and subsequent maintenance is also higher than that of overhead lines, about 8-10 times that of overhead lines, so careful evaluation and processing are required.