The utility model discloses a novel DC power system based on a 35kV transformer substation. A single high frequency power supply module and a 12V battery are connected to form a high frequency module, and the output ends of a plurality of high frequency modules are in parallel connection to form a DC system. Different high frequency module units are managed through monitoring, and output voltage and current of each high frequency module unit are monitored. Identical 110V or 220V DC voltage output by the high frequency module units and a load is added to form a non-selective DC battery system. A high frequency switch technology is employed, thereby realizing the mixture use of novel and used batteries and batteries different in batch, type and manufacturing factory without special battery monitoring device. The novel DC power system fully uses resources, and reduces investment and environmental pollution. The novel DC power system is safe and reliable, and has promising economic and social benefits. The novel DC power system saves investment and optimizes resource configuration.