Real-Time Testing of Microgrids

Vijay, A. S.; Doolla, Suryanarayana

doi:10.1007/978-3-030-59750-4_21

Cited by 1 publication

(1 citation statement)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the design, simulation, and validation of system performance under a hierarchical control approach, mathematical models relating the DER power flow to the MHM are required to formulate and solve an optimization problem at the upper layer of the control and management of the MHM [8]. At the secondary and primary levels, low-frequency equivalent models, whose dominant dynamics are by the simulation horizon, are introduced for system performance analysis under a daily scheduling approach based on demand and generation forecasting [9,10]; these models must be sufficiently detailed so that the dynamics of interest are accurately identified throughout, while at the same time being simple enough to meet real-time simulation constraints [11,12]. Thus, it is necessary to build DRTS schemes with the detail and accuracy required to account for the reliability of both the computational models and the optimal operating point of the MHM.…”

Section: Introductionmentioning

confidence: 99%

Real-Time Testing Optimal Power Flow in Smart-Transformer-Based Meshed Hybrid Microgrids: Design and Validation

Núñez-Rodríguez,

Unsihuay-Vila,

Posada

et al. 2024

Energies

View full text Add to dashboard Cite

The smart transformer (ST) is a multiport and multi-stage converter that allows for the formation of meshed hybrid microgrids (MHMs) by enabling AC-DC ports in medium and low voltage. This type of microgrid has advantages over the performance of conventional hybrid AC-DC microgrids (HMGs); however, the number of degrees of freedom of the ST increases the complexity of the energy management systems (EMSs), which require adequate and accurate modeling of the power flow of the converters and the MG to find the feasible solution of optimal power flow (OPF) problems in the MHM. An ST’s equivalent power flow model is proposed for formulating the MHM OPF problem and developing low-frequency equivalent models integrated with a decoupled hierarchical control architecture under a real-time simulation approach to the ST-based MHM. A simulation model of the MHM in the Simulink® environment of Matlab® 9.12 is developed and implemented under a digital real-time simulation (DRTS) approach on the OPAL-RT® platform. This model allows for determining the accuracy of the developed equivalent models, both low-frequency and power flow, and determining the MHM performance based on optimal day-ahead scheduling. Simulation test results demonstrated the ST equivalent model’s accuracy and the MHM’s accuracy for OPF problems with an optimal day-ahead scheduling horizon based on the model-in-the-loop (MIL) and DRTS approach.

show abstract