Transient dynamic analyses of presaturated core fault current limiters through flux and inductance versus current modelling. Issue 9 (28th May 2019)

• Record Type: Journal Article
• Authors: Eladawy, Mohamed; Tarhuni, Naser J.; Metwally, Ibrahim A.
• Is Part Of: IET electric power applications. Volume 13:Issue 9(2019)
• Page Start: 1263
• Page End: 1272
• Publication Date: 2019-05-28
• Subjects: finite element analysis -- inductance -- electric potential -- fault current limiters -- magnetic flux -- coils; Simulink modelling -- self‐inductance–current characteristic -- time‐varying self‐inductance -- significant flux variation -- DC coil terminals -- DC biasing current -- total flux linkage–current characteristics -- dual‐core presaturated core fault current limiter -- transient dynamic behaviour -- MATLAB/Simulink models -- finite‐element simulations -- current modelling -- presaturated core fault current limiters -- transient dynamic analyses -- fault condition -- electrical transient programme -- dynamic transient behaviour -- current models -- static inductance -- PCFCL -- total voltage drop -- dynamic inductance term; Electric power -- Periodicals; Electric power systems -- Periodicals; 621.305
• DOI: 10.1049/iet-epa.2018.5377
• Languages: English
• ISSNs: 1751-8660

Abstract

Abstract : Here, the outcomes of experimental measurements and finite‐element simulations are used to develop MATLAB/Simulink models for evaluating the transient dynamic behaviour of the well‐known dual‐core presaturated core fault current limiter (PCFCL), either for single‐ or three‐phase configurations. These models are based on calculating the total flux linkage–current characteristics of the AC coils at different levels of DC biasing current, taking into consideration the induced voltage across the DC coil terminals due to significant flux variation during the fault condition. On the other hand, the time‐varying self‐inductance and the self‐inductance–current characteristics of the PCFCL are directly developed through Simulink modelling. It is worth mentioning that the self‐inductance–current characteristic enables an important and quick design optimisation tool for PCFCL, where the dynamic inductance term significantly contributes to the total voltage drop across PCFCL in comparison to the static inductance. These total flux linkage and inductance versus current models can be directly used for modelling the dynamic transient behaviour of PCFCL when attached to any electrical transient programme used for analysing complex electrical power systems, with remarkable accuracy, quicker, and easier for various network scenarios and fault conditions.