By leveraging the functions of DIgSILENT software, a method to comprehensively test the power flow functions within advanced applications of distribution automation master station is presented. The test bench is established and the results of power flow calculation of distribution network are testified with the IEEE 33/69 buses test system. The results demonstrate this test bench examines the power flow calculation of distribution network effectively and provides an valid method for testing advanced application functions of distribution automation master station. This work is supported by Science and Technology project of State Grid Corporation of China(research and development of key technologies for operation supervision and testing platform of distribution automation system).