Hybrid simulation platform for VSC-HVDC-assisted large-scale system restoration studies

Hybrid EMT-TS Simulation Strategies to Study High Bandwidth MMC-Based HVdc Systems

“…Previous research implemented the hybrid simulation platform to represent a significant portion of the system model in a phasor-domain transient stability (TS) simulation program and co-simulate that with a detailed electro-magnetic transient (EMT) model of a small portion containing voltagesource converter (VSC) -HVdc [9], [10]. The communication between the TS and EMT programs is built on a software called E-TRAN Plus [11] that can simultaneously simulate the detailed model using a micro-second timestep in PSCAD [12], and the rest of the system using a milli-second time-step in PSS/E [13].…”

“…The communication between the TS and EMT programs is built on a software called E-TRAN Plus [11] that can simultaneously simulate the detailed model using a micro-second timestep in PSCAD [12], and the rest of the system using a milli-second time-step in PSS/E [13]. The PSS/E portion of the system model in [9] utilized an 8-machine 31-bus system, which is a limited-size test system. In addition, the paper by Farsani et al [9] adopts an empirical approach to size the buffer area, within which a number of ac buses on either side of the HVdc line are selected and modeled in PSCAD program.…”

“…The PSS/E portion of the system model in [9] utilized an 8-machine 31-bus system, which is a limited-size test system. In addition, the paper by Farsani et al [9] adopts an empirical approach to size the buffer area, within which a number of ac buses on either side of the HVdc line are selected and modeled in PSCAD program.…”

“…• This paper is the first paper that describes the cosimulation of a high-fidelity HVdc transmission line model with realistic EI system while other cosimulation works only consider using limited-size IEEE standard systems [9]. • This paper proposes a VAr injection method to determine the size of buffer areas that are modeled in detailed EMT simulation.…”

High Penetration Power Electronics Grid: Modeling and Simulation Gap Analysis

“…Additionally, there are capabilities to perform hybrid EMT-TS simulation through software like E-Tran that connects PSCAD to Power System Simulator for Engineering (PSS®E), PSS®SINCAL, DIgSILENT PowerFactory, and EMTP-RV, among others. The estimated number of boundary buses simulated in hybrid simulations is in the tens (with a maximum of up to 25 estimated based on publicly available information)[28,62,63].…”