The energy internet is a multi-energy sharing system with the coordinated and optimized operation of "source-network-load-storage". The energy router (ER) is the basic equipment in the future energy internet, so the research on the routing strategy of the ER is of great significance for the energy optimization. The traditional routing strategy based on the minimum loss path (MLP) does not consider the loss cost of different distributed energy resources (DERs), so the DERs with low loss cost have the same transaction priority as the DERs with high loss cost. In addition, power exchange should not be limited to traditional centralized allocation and scheduling, but peer to peer (P2P) transactions between ERs. Therefore, a minimum loss cost path (MLCP) routing strategy that can realize P2P transactions is proposed, which can maximize the benefits and improve the priority of renewable energy by modifying marginal cost coefficient. At the same time, a scheme of congestion management based on "the principle of equal mini rate of loss" is presented, which has less loss cost and can obtain the best optimization effect under the condition of critical congestion. Effectiveness of MLCP routing strategy is proved by simulation, and the superiority of the congestion management scheme is verified by comparing with traditional schemes.

energy router,routing strategy,minimum loss cost path,congestion management