Power system simulation by an improved WRM

This paper presents a new algorithm for power system simulation based on the waveform relaxation method (WRM), component-oriented modeling technique (COMT) and bondgraph modeling technique (BGMT). Integrating COMT and BGMT into WRM permits to reduce largely computation complexity of simulation of large-scale power systems. These two techniques (BGMT and COMT) are used to establish efficient system partitioning and interfaces between components and transmission network. To show the performance of the proposed algorithm, the paper presents a case study on torsional interactions between turbo-generator and HVDC transmission line. These system models, especially, the global system model are validated by comparing simulation and laboratory test results.