TY - GEN
T1 - The NRPS model and its extension for modeling grids with multiple (virtual) synchronous machines
AU - Reisner, Florian
AU - Weiss, George
N1 - Publisher Copyright: © 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - The increase of the number of inverter-interfaced power sources has made the analysis of the stability for such AC grids an important topic. The complexity of such grids comprising many machines, coupled through a complex transmission network makes the stability analysis challenging. Many models have been proposed, of various complexity, to analyze stability and to derive sufficient conditions for stability for transmission line impedances, inertia and droop constants. A simple and moderately accurate model capable of representing the active power dynamics of grids consisting of virtual synchronous machines (VSMs) and synchronous generators (SGs) is the network reduced power system (NRPS) model. In this paper, we show how active and reactive powers as well as the voltages at the filter capacitors of the VSMs can be obtained from the NRPS model by simple computations. We further introduce a new extension of this model called the reactive active power system (RAPS) model, accounting for reactive power control and internal voltage dynamics, by modeling each generator as a third order (nonlinear) system. We compare the performance of this model, the regular NRPS model and high order simulations for a microgrid with four VSMs and four loads. Finally, we show how to accurately tune the parameters of the NRPS and RAPS models to correctly represent a given grid.
AB - The increase of the number of inverter-interfaced power sources has made the analysis of the stability for such AC grids an important topic. The complexity of such grids comprising many machines, coupled through a complex transmission network makes the stability analysis challenging. Many models have been proposed, of various complexity, to analyze stability and to derive sufficient conditions for stability for transmission line impedances, inertia and droop constants. A simple and moderately accurate model capable of representing the active power dynamics of grids consisting of virtual synchronous machines (VSMs) and synchronous generators (SGs) is the network reduced power system (NRPS) model. In this paper, we show how active and reactive powers as well as the voltages at the filter capacitors of the VSMs can be obtained from the NRPS model by simple computations. We further introduce a new extension of this model called the reactive active power system (RAPS) model, accounting for reactive power control and internal voltage dynamics, by modeling each generator as a third order (nonlinear) system. We compare the performance of this model, the regular NRPS model and high order simulations for a microgrid with four VSMs and four loads. Finally, we show how to accurately tune the parameters of the NRPS and RAPS models to correctly represent a given grid.
KW - Network reduced power system model
KW - RAPS model
KW - microgrid
KW - power system modeling
KW - synchronization
KW - synchronous generator
KW - virtual synchronous machine
UR - http://www.scopus.com/inward/record.url?scp=85183586714&partnerID=8YFLogxK
U2 - https://doi.org/10.1109/eGrid58358.2023.10380826
DO - https://doi.org/10.1109/eGrid58358.2023.10380826
M3 - منشور من مؤتمر
T3 - 2023 8th IEEE Workshop on the Electronic Grid, eGRID 2023
BT - 2023 8th IEEE Workshop on the Electronic Grid, eGRID 2023
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 8th IEEE Workshop on the Electronic Grid, eGRID 2023
Y2 - 16 October 2023 through 18 October 2023
ER -