Equivalent Grid-Following Inverter-Based Generator Model for ATP/ATPDraw Fast Time-Domain Simulations
Name: MATHEUS BASSANI LUCHINI
Publication date: 24/07/2023
Examining board:
Name |
Role |
|---|---|
| FELIPE VIGOLVINO LOPES | Examinador Externo |
| LUCAS FRIZERA ENCARNACAO | Examinador Interno |
| MÁRIO OLESKOVICZ | Examinador Externo |
| OURESTE ELIAS BATISTA | Presidente |
Summary: Due to the increasing penetration of inverter-based resources (IBR) in modern power
grids, most phasor-domain models became insufficient to represent the system dynamics
during steady-state and fault conditions. As a result, IBR time-domain models gained
importance. However, complete models that include switching elements and their respective
controllers are usually time-consuming and difficult to initialize, especially in systems
with several IBRs connected. Thus, this work presents an equivalent time-domain gridfollowing
inverter-based generator (IBG) model, which can be used in Electromagnetic
Transients Programs (EMTP). The proposed IBG model is developed in the Alternative
Transients Program (ATP) using the ATPDraw graphical interface. A complete benchmark
photovoltaic model available in ATP/ATPDraw environment is taken as reference to
evaluate the proposed equivalent IBG model under steady-state and fault scenarios. The
obtained results showed that the proposed model is simpler and less time-consuming than
the complete model, being capable of easily considering the implementation of different
components/controls of IBR in EMTP. The settings used in the implemented control
schemes proved to be effective, resulting in an average error of about 2.21% during fault
conditions. Also, a reduction of about 70 % in the execution time was achieved when
compared to the analyzed benchmark one, attesting its usefulness for power system studies
with high presence of grid-following IBRs.
