Validation Tests of The Hypersim Digital Real Time Simulator with a Large AC-DC Network

Hydro-Quebec (HQ) had used for many years a very large hybrid simulator for studying various aspects of its power system network. New developments on its network requires to expand and maintain the simulation facilities,and with the development success of Hypersim digital simulator,it was decided to use this technology to gradually replace the hybrid simulator. This paper presents the development and validation of this large scale digital simulator for AC and DC power system performance studies. Validation tests are performed with a relatively large AC-DC interconnected network including generators (turbine,AVR),dynamic loads and a full bipole HVDC transmission system. The network is simulated on both Hypersim real-time simulator and on the hybrid simulator,it is connected with the real external HVDC controls. Comparison of simulation results obtained with Hypersim and with the hybrid simulator are presented. The benefits of precision valve model as well as the effect of the simulation time step will also been discussed. Keywords - Power System real time simulation, HVDC control testing, Hypersim