Electromagnetic Transient (EMT) Simulation Algorithms for Evaluation of Large-Scale Extreme Fast Charging Systems (T& D Models)

Simulation of high-fidelity models of extreme fast charging (XFC) systems and large-area power grids with many XFCs can be time consuming in traditional simulators. Traditional simulators use a single method of discretization for all the components that results in imposing a large computational burd...

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Vydáno v:IEEE transactions on power systems Ročník 38; číslo 5; s. 4069 - 4079
Hlavní autoři: Debnath, Suman, Choi, Jongchan
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York IEEE 01.09.2023
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:
Algorithms
CAD
Charging
Clustering
Computational modeling
Computer aided design
Computer simulation
Differential equations
Discretization
electric vehicle chargers
Electromagnetic transient simulation
EMT
EV chargers
extreme fast charging
Heuristic algorithms
Load modeling
Mathematical models
Numerical models
Power grids
Power system dynamics
Simulation
Simulator fidelity
Simulators
Time constant
transmission-distribution grids
XFC
ISSN:0885-8950, 1558-0679
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Popis
Shrnutí:Simulation of high-fidelity models of extreme fast charging (XFC) systems and large-area power grids with many XFCs can be time consuming in traditional simulators. Traditional simulators use a single method of discretization for all the components that results in imposing a large computational burden of inverting a large matrix as well as increased computations related to single method of discretization (that is typically a trapezoidal method). To overcome the problem of simulating large-area power grids with many XFCs, in this paper, advanced numerical simulation algorithms are applied for the first time together to reduce the dimension of matrix inversion. The algorithms include numerical stiffness-based segregation, time constant-based segregation, clustering and aggregation on differential algebraic equations (DAEs), and multi-order integration approaches. These algorithms apply multiple discretization algorithms rather than a single discretization algorithm that further reduces the computational burden. The approaches mentioned here have resulted in speed-up of up to 18x in the simulation of a single distribution system with 15 XFCs and of up to 271x in the simulation of a transmission-distribution system with 300 XFCs in multiple distribution feeders with respect to conventional simulators (like power systems computer aided design [PSCAD]).
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ISSN:0885-8950
1558-0679
DOI:10.1109/TPWRS.2022.3212639