Published: 2019-02-26
ISBN: 978-91-7685-148-7
ISSN: 1650-3686 (print), 1650-3740 (online)
This paper describes the modeling of a frequency controller that can be applied when islanding occurs at a power distribution network with a single distributed generator. The controller function requires bus frequency measurements which, for design purposes, need to be derived (computed) during dynamic simulations. Therefore, this paper also proposes a simple new frequency computation technique that can be used during dynamic simulations. The paper also addresses a technique for stochastic modeling of load uncertainties in the time-domain using the Modelica Noise library’s features. The performance of the islanded controller is evaluated under load uncertainties, different PMU (phasor measurement unit) reporting rates and communication latencies.
frequency computation, islanded controller, random load variation, PMU, distribution network, synchrophasors,Modelica, OpenIPSL
Almas, M.S. &Vanfretti, L., “RT-HIL Implementation pf the Hybrid Synchrophasor and GOOSE-Based Passive Islanding Schemes,” IEEE Transactions on Power Delivery, vol. 31, pp. 1299-1309, June 2016.
Taranto, G.N., Assis, Tatiana M.L. “Automatic Reconnection From Intentional Islanding Based on Remote Sensing of Voltage and Frequency Signals,” IEEE Transsactions on Smart Grid, December 2012, Vol. 3, pp. 1877-1884
Lasseter, R.H., "MicroGrids," Power Engineering Society Winter Meeting, 2002. IEEE , vol.1, no., pp.305,308 vol.1, 2002
Franc, R., Sena, C., Taranto, G.N., & Giusto, A., “Using synchrophasors for controlled islanding-A prospective application for the Uruguayan power system,” IEEE Trans. Power Syst., vol. 28, no. 2, pp. 2016–2024, May 2013
Kirkham, H., Dagle, J., Sun, Y., PMU Measurement Technology. s.l.:https://certs.lbl.gov/sites/all/files/kirkham-pmumeasurement-technology.pdf, 2014. p. 10
Milano, F., and Ortega, A., “Frequency divider,” Power & Energy Society General Meeting, 2017 IEEE
Diez-Maroto. L., Vanfretti. L., Almas, M.S., Jonsdottir. G.M., Rouco.L, “A WACS exploiting generator Excitation Boosters for power system transient stability enhancement,” Elsevier-Electric Power Systems Research. https://doi.org/10.1016/j.epsr.2017.03.019
Jacobsen, M.R., Laverty, D., Best, R. J., “A laboratory
experiment of single machine synchronous islanding using
PMUs and Raspberry Pi – A platform for multi-machine
islanding,” Power & Energy Society General Meeting,
2016
PukarMahat, Zhe Chen, and BirgitteBak-Jensen, “Gas turbine control for islanding operation of distribution systems,” Power & Energy Society General Meeting, 2009 IEEE
Modelica Noise. [Online] https://github.com/DLR-SR/Noise
Modelica Standard Library, [Online] https://github.com/modelica/ModelicaStandardLibrary
Siemens AG. (2018). PSS®E – high-performance transmission planning and analysis software. Retrieved from: https://www.siemens.com/global/en/home/products/energy/services/transmission-distribution-smart-grid/consultingand-planning/pss-software/pss-e.html
IEEE Application Guide for IEEE Standard for Interconnecting Distributed Resources With Electric Power Systems, IEEE Std. 1547.2-2008, 2008
Baudette, M., Castro, M., Rabuzin, T., Lavenius, J., Bogodorova, T., &Vanfretti, L. (2018). OpenIPSL: Open-Instance Power System Library – Update 1.5 to “iTesla Power Systems Library (iPSL): A Modelica library for phasor time-domain simulations”, SoftwareX. https://doi.org/10.1016/j.softx.2018.01.002
OpenIPSL GitHub, [online] https://github.com/OpenIPSL/OpenIPSL .
Modelica Documentation, [Online] https://build.openmodelica.org/Documentation/ModelicaReference.Operators.%27delay()%27.html
Almas, M.S. &Vanfretti, L., “Impact of time-synchronization signal loss on PMU-based WAMPAC applications,”IEEE Power and Energy Society General Meeting (PESGM),pp.1 – 5,2016
