In order to solve different protection problems for various services in electric power communication network

a service-oriented hybrid P-cycle/fast reroute (FRR) protection algorithm is proposed to provide fast restorability under shared risk link group (SRLG) constraint. In light of the number difference in fiber cores of electric power communication links and different service demands

hierarchical protection with the ability of partial multi-link failure restoration for electric power services is realized. The simulation results show that the approach proposed is able to reduce the fault restoring time and blocking rate of high priority services in heavy load scenarios

while providing fast restorability for high priority services associated with production safety of power systems. This work is supported by National Natural Science Foundation of China (No. 51307051) and Fundamental Research Funds for the Central Universities (No. 2015ZD01).