Real-time Simulation of HVDC System with Integrated Wind Farm Using CloudPSS-RT

The HVDC system is suitable for long-distance transmission and grid integration of large wind farms due to its high output voltage and strong anti-interference ability. In order to meet the demand for efficient simulation of the system model, this paper builds an MMC-HVDC system model with integrated wind farm on the CloudPSS platform. The simulation efficiency of the model is improved by means of average value modeling of converters, equivalent aggregation of wind farms, and constant conductance matrix modeling of MMC, which has the capability of real-time simulation. The real-time simulation results are compared with the off-line simulation results to verify the correctness and real-time performance of the model. The built model and CloudPSS real-time simulation platform can provide a basis for further research of the MMC-HVDC system with wind farms, and can also be applied to the frequency sweep analysis of the system impedance and the hardware-in-loop test of the controller in the future.