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Faster-Than-Real-Time Hardware Emulation of Transients and Dynamics of a Grid of Microgrids
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- Author(s) / Creator(s)
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Enhanced environmental standards are leading to
an increasing proportion of microgrids (MGs) being integrated
with renewable energy resources in modern power systems, which
brings new challenges to simulate such a complex system. In
this work, comprehensive modeling of a grid of microgrids for
faster-than-real-time (FTRT) emulation is proposed, which can be
utilized in the energy control center for contingencies analysis and
dynamic security assessment. Electromagnetic transient (EMT)
modeling is applied to the microgrid in order to reflect the
detailed device processes of the converter and renewable energy
sources, while the AC grid utilizes the transient stability modeling
to reduce the computational burden and obtain a high acceleration
value over real-time execution. Consequently, a dynamic
power injection interface is proposed for the coexistence of the
two simulation types. The reconfigurability and parallelism of
the field-programmable gate arrays (FPGAs) enable the whole
system to be executed in FTRT mode with 51 times acceleration
over real-time. Meanwhile, three case studies are emulated
and the results are validated by the off-line simulation tool
Matlab/Simulink. -
- Date created
- 2022-10-01
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- Type of Item
- Article (Published)