Research on grid-connected performance test method for power converter of electrochemical energy storage

Based on the grid codes and normal operations requirements for power station of electrochemical energy storage, the grid-connected performance index and its laboratory testing method for power converter of electrochemical energy storage is given in this paper, which include active/reactive power control ability, power quality, grid-connected/islanded switch ability, low voltage ride through and charge/discharge control. By using the bidirectional DC source and typical electrochemical energy storage I-V curve, the test platform of power converter is built. The test and analysis of a 50kW power converter is carried out according to the mentioned indexes and methods. This test method is universal to all types of electrochemical energy storage converter. It provides the basis to establish unified and standardized grid-connected method for Power Converter of Electrochemical Energy Storage.