Abstract:With the improvement of life level, the city modernization and accelerate the construction of box type substation in the city distribution network is widely used, but in the city center district construction ground box-type substation and the current city construction difficult to coordinate, and the surrounding environment is not harmonious factor. Therefore, a buried box type transformer substation will serve as a new type of energy saving of the case will have a great development prospect.
The graduation design is the main content of the residential quarters of the power supply system of underground box type transformer substation, area load calculation, selection of power cable based on the preliminary design, residential design for the distribution of relevant design specifications.
Underground box type transformer substation is residential supply and distribution is an important part of the design, responsible for changes in power and the distribution of the important task. Power cable load of power transmission and distribution is the important task. Therefore, the design thought is: first, according to the calculated load cell and the analysis of the results, and puts forward the corresponding power supply design scheme; secondly, on the district's distribution cable choice. Finally, draw relevant drawings.
Key words: Underground box type transformer substation， power cable， application