Abstract:Considering that the wave energy power generation access distribution network brings weak ring operation and relay protection to the distribution network, the wave energy generation model is first established. On this basis, the wave energy can be connected to the distribution network and the relay protection is given. The series of impacts brought by the scheme, then analyze the fault calculation method of distribution network with wave energy generation, and then propose an overcurrent protection scheme based on improved partitioned differential to realize relay protection of distribution network with wave energy and grid connection, and The effectiveness of the scheme is verified by simulation.