Economic Analysis of Incremental Distribution Network Construction of Urban Industrial Park under the Background of Smart City

Table 6

2016 overall plan for replacement of power grid equipment in a certain area.

Equipment	Possible replacement percentage of equipment (%)	Replacement plan
Electric cable	3.63	Replace 2 cables over 20 years
Switchgear	0.03	No replacement plan
Distribution transformer	20.54	Replace 6 sets of distribution transformers over 10 years
Main transformer	0.01	No replacement plan