With the development and maturity of direct current (DC) power supply technologies, DC power supply mode has shown its potential to be superior to AC power supply mode in terms of reliability and economy, and has become an important direction for construction and renovation of current data centers.However, in China, there is still no unified standard for voltage level of DC data centers. A reasonable framework and a evaluation method based on the current new mode of multi-station integration are put forward. Comprehensive comparison has been carried out from aspects of line loss, reliability, upgrade potential, equipment manufacturing level and load demand of the three DC power supply frameworks. Based on the comparison results, the advanced comprehensive performance of the proposed hybrid communication architecture is proved. The research methods and conclusions proposed have important reference significance for the standardization of voltage level of DC data center and the construction of new mode of multi-station fusion.