Pipelined Numerical Integration on Reduced Accuracy Architectures for Power System Transient Simulations

This work concerns a dedicated mixed-signal power system dynamic simulator. The equations that describe the behavior of a power system can be decoupled in a large linear system that is handled by the analog part of the hardware, and a set of differential equations. The latter are solved using numerical integration algorithms implemented in dedicated pipelines on a field programmable gate array (FPGA). This data path is operating in a precision-starved environment since is it synthesized using fixed-point arithmetic, as well as it relies on low-precision solutions that come from the analog linear solver. In this paper, the pipelined integration scheme is presented and an assessment of different numerical integration algorithms is performed based on their effect on the final results. It is concluded that in low-precision environments higher order integration algorithms should be preferred when the time step is large, since simpler algorithms result in unacceptable artifacts (extraneous instabilities).


Published in:
2014 UKSim-AMSS 16th International Conference on Computer Modelling and Simulation, 176-181
Presented at:
2014 UKSim-AMSS 16th International Conference on Modelling and Simulation (UKSim), Cambridge, United Kingdom, 26-28 March 2014
Year:
2014
Publisher:
IEEE
Keywords:
Laboratories:




 Record created 2015-03-28, last modified 2018-03-17

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