A Reconstruction Algorithm for Wide-Area Protection Communication Network

摘要

The communication network of wide-area protection may be interrupted because of the severe environment or artificial damage. The delay of communication will increase so much that the wide-area protection cannot work normally in some severe cases mentioned above. That is one of the factors which affect the application of wide-area protection. A reconstruction algorithm including different circuitous modes for different situations is proposed to maintain the transmission of the data on the interrupted channel. On the one hand, a single-path circuitous mode is proposed when the data in the shut path is small. In this situation, the best circuitous path can be found out by Floyd considering the several reference factors affection. On the other hand, a multi-paths circuitous model is proposed to solve the congestion which is caused by detouring under single-path circuitous mode. The available margin of the bandwidth of the weakest channel called the short-board channel in each circuitous path is the focus of the algorithm. In this situation, the optimal shunt coefficients are determined according to the bandwidth margin ratio of the short-board channel. Then the data on the interrupted channel is divided into several streams based on the shunt coefficients. Therefore, the balance of the communication network can be ensured after the interrupted channel is divided. Finally, with OPNET communication simulation software, the IEEE14 nodes network is built. Delay and balance of system based on this reconstruction algorithm are tested. (c) 2021 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.