Modelling non-linear and distributed elements in transient state estimation.

Escamilla, Alejandro Castellanos

Modelling non-linear and distributed elements in transient state estimation.

dc.contributor.author	Escamilla, Alejandro Castellanos
dc.date.accessioned	2015-12-21T02:07:47Z
dc.date.available	2015-12-21T02:07:47Z
dc.date.issued	2015	en
dc.description.abstract	Power quality state estimation (PQSE) is a set of techniques with the objective to estimate diverse power quality phenomena in electric power systems; transient state estimation (TSE) being one such technique. Its objective is to estimate node voltage waveforms in a network after it has been subject to an electromagnetic transient. This work focuses on TSE using the numerical integrator substitution (NIS) method to model the system transients. The objective of this work is to further extend TSE with NIS, to include non-linear and distributed parameter elements. The intended application for TSE is to serve as an analysis tool for post-disturbance root cause analysis. The technique can be considered under development but in the future must be capable, considering certain requirements are met for measurements and system modelling, to help in the identification of the cause(s) for failure or malfunction when electromagnetic transients are recorded. The use of TSE removes the need of multiple simulation runs that are currently required in order to find the cause of disturbance (each simulation with a different system configuration trying to match measured waveforms). The contributions of this work include: analysis of numerical oscillation in TSE with NIS using single-phase circuits, the application of TSE with NIS to non-linear branches using the piecewise linear method, the development of an extended observability analysis capable of identifying unobservable islands, the application of virtual measurements to linear and lumped circuits, and the application of TSE with NIS to transmission lines modelled with distributed parameters.	en
dc.identifier.uri	http://hdl.handle.net/10092/11640
dc.identifier.uri	http://dx.doi.org/10.26021/2861
dc.language	English
dc.language.iso	en
dc.publisher	University of Canterbury	en
dc.rights	All Right Reserved	en
dc.rights.uri	https://canterbury.libguides.com/rights/theses	en
dc.title	Modelling non-linear and distributed elements in transient state estimation.	en
dc.type	Theses / Dissertations
thesis.degree.discipline	Electrical Engineering	en
thesis.degree.grantor	University of Canterbury	en
thesis.degree.level	Doctoral	en
thesis.degree.name	Doctor of Philosophy	en
uc.bibnumber	2134326
uc.college	Faculty of Engineering	en