A Trust-Based Hierarchical Consensus Mechanism for Consortium Blockchain in Smart Grid

As the smart grid develops rapidly, abundant connected devices offer various trading data. This raises higher requirements for secure and effective data storage. Traditional centralized management does not meet above requirements. Currently, with conventional consortium blockchain can solve issues. However, in face of a large number nodes, existing consensus algorithms often perform poorly terms efficiency throughput. In this paper, we propose trust-based hierarchical mechanism (THCM) to problem. Firstly, design improve Then, intra-layer nodes use an improved Raft algorithm inter-layer Byzantine Fault Tolerance algorithm. Thirdly, trust evaluation method election process Raft. Finally, implement prototype system evaluate performance THCM. The results demonstrate that is by 19.8%, throughput 12.34%, storage reduced 37.9%.