A wave-channel balanced dynamic routing and wavelength assignment(RWA)algorithm based on service is proposed for electricity optical transport network. This algorithm is designed to solve RWA problems of multi-service level request in the complicated power optical transmission network. The service mergers and the routing of cross-domain business request are completed according to complex network topology and service request status. The priority problem of the service request is then completed based on the inter-domain and domain priority setting strategy. The wavelength assignment by the priority is finally completed by using the packet wavelength assignment algorithm. Simulation results show that the algorithm can effectively reduce the network request blocking rate and increase the optical transmission network resource utilization

and in dealing with large and complex network topology and the multi-service RWA grade. This work is supported by State Grid Corporation of China(No. SGKJ2015-9).