This presentation proposal is based on two papers indicating the interfacing of RTDS real-time simulators with an RMS simulation running in the offline simulation program PSS®E. The former paper (https://doi.org/10.1016/j.epsr.2022.108490) highlights the interface itself with a minimalistic application example. The latter paper (currently under review) uses this interface to couple a 12,000 node RMS network to 3 LCC HVDC stations, providing insights to electro-mechanical transients using a real-time model in its native environment.
In its first part, this contribution proposes a coupling interface between the real-time simulation system RTDS Novacor and the Power System Simulation Software PSS®E for electromagnetic transient (EMT) and phasor (RMS) hybrid simulations to enable a performant connection between the domains. For the coupling interface, an Ethernet (UDP) based connection is utilized. The technical implementation of the interfaces is explained in detail. The functionality of the interfaces is verified based on an EMT-RMS simulation in a small overhead line test system.
Finally, this contribution uses the interface to provide insights into a cosimulation of phasor based and instantaneous value based simulators using a real use case. Coupling multiple high-voltage direct-current (HVDC) stations, modeled in a real-time simulation environment using RTDS simulators, to an offline RMS Simulation in PSS®E allows for producing insights unseen before. The model is tested in the smaller SAVNW system before it is implemented in the East China Transmission System consisting of over 12,000 three-phase nodes. Three HVDC connections are integrated in EMT using an individual real-time simulator each. Finally, a cross-verification is performed comparing the system response to the
simulation tool BPA, where the system is modeled in a monolithic way for reference. The results of a disturbance investigation allow a combined investigation of electromagnetic transient as well as transient stability phenomena.
Christian Scheibe | Siemens AG