Reliable Aggregation Method of Power Line Communication Subcarriers in Complex Power Electronic Colored Noise Environment

With the continuous promotion of smart grid construction, massive power electronic devices have been widely used in power system. However, the large-scale access of power electronic devices makes the power electronic colored noise interference more complex in power information communication network. To address the above problem, this paper constructs the colored noise coexistence spectrum knowledge graph to achieve comprehensive and accurate evaluation of the subcarrier life cycle for power line communication (PLC). Then, a highly reliable carrier aggregation method based on subcarrier life cycle evaluation is proposed to improve the communication rate and save bandwidth resources. The simulation results show that this method has excellent performance.