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Phasor Time-Domain Power System Modeling and Simulation using the Standardized Modelica Language: Conventional and Power Electronic-Based Devices
KTH, School of Electrical Engineering (EES), Electric Power Systems.
2015 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Modern electric power systems are complex networks that ensure continuous supply of

electricity. For the planning and operation of these complex networks, modeling and simulations

are essential to satisfy operational requirements or planning constraints. Traditionally,

dynamic modeling and simulation of power systems is performed by using

di erent and mostly incompatible software packages. This issue is currently being addressed

through the Common Information Model (CIM) for power system applications,

however, there are still many challenges for Power system dynamic modeling and simulation

without any ambiguity.

To overcome these challenges, this thesis develops unambiguous models for consistent

model exchange, which are compatible in di erent simulation environments that support

the Modelica language. Modelica, an object-oriented equation-based standardized

language, is proposed as possible solution to these challenges as it can represent and

exchange dynamic models with a strict mathematical description.

In this thesis, modeling and simulation of controllable power electronic-based components

and conventional components for phasor time-domain simulation is carried out

using Modelica. The work in this thesis contributes to a Modelica power systems library

being developed by KTH SmartTS Lab under the FP7 iTesla project and other projects

supported by Statnett SF. Both software implementation in Modelica of each component,

and software-to-software validation against PSAT is carried out.

Abstract [sv]

Moderna elkraftsystem r komplexa ntverk som skerstller en kontinuerlig tillfrsel av elkraft.

Fr att kunna uppfylla de tekniska krav och begrnsningar som stlls vid planering och drift

r modellering och simulering av dessa komplexa ntverk av avgrande betydelse. Vanligtvis

sker modellering och simulering av kraftsystemets dynamik i olika och oftast inkompatibla

programvaror. Detta problem sker Common Information Model (CIM) fr kraftsystemkomponenter

att lsa, men mnga hinder kvarstr innan dynamisk modellering och

simulering av kraftsystemet kan ske utan tvetydigheter.

Fr att lsa dessa utmaningar s utvecklar detta examensarbete entydiga modeller fr

ett konsekvent utbyte av modeller mellan simuleringsprogramvaror som stdjer modelleringssprket

Modelica. Modelica, ett standardiserat, objektorienterat och ekvationsbaserat

sprk, fresls som en mjlig lsning fr dessa utmaningar d det kan representera och utbyta

modeller genom en strikt matematisk beskrivning.

I detta examensarbete utfrs modellering och simulering i Modelica av bde styrbara

kraftelektronik och konventionella kraftsystemkomponenter fr tidssimulering med fasvektorer.

Detta examensarbete bidrar till det Modelica bibliotek fr elkraftsystem som utvecklas

av KTH SmartTS Lab i FP7 projektet iTesla och andra projekt som stttas av Statnett

SF. Modellerna som utvecklas i Modelica valideras med hjlp av mjukvaru-validering med

PSAT som referens.

Place, publisher, year, edition, pages
2015. , 89 p.
EES Examensarbete / Master Thesis
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
URN: urn:nbn:se:kth:diva-167642OAI: diva2:813399
Available from: 2015-05-22 Created: 2015-05-22 Last updated: 2015-05-22Bibliographically approved

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