In order to solve the problems of low proportion of spontaneous self use of new energy and high carbon emissions from highway transportation

new energy developed within the highway area can be transmitted to nearby distribution facilities or micro-grid systems of service areas.This article proposes five interconnection schemes and analyzes their technical characteristics and the economic benefits.To conclude

for scenarios where the slope photovoltaic system is closer to the service area

an AC interconnection scheme can be adopted.For the slope photovoltaic system is farther away

it is recommended to use a flexible DC interconnection technology scheme.With the cost reduction of power electronic equipment such as DC transformers

the all DC interconnection scheme will become the most preferred technical solution due to its high conversion efficiency.