This dissertation addresses three different problems in power systems. The first
problem is related to the fault location in complex topologies such as three terminal
circuits with series compensation and mutually coupled line sections and distribution
networks with distributed generation. Novel methods are presented by using traveling
wave approach and wavelet transformation technique to overcome the difficulties
introduced by the discontinuities and integrated components such as Metal Oxide
Varistor (MOV) protected series capacitors and distributed generation in complex
topologies. Simulation results show good correlation between the actual and estimated
fault locations for all the studied cases. The second problem concerns the
calculation techniques of voltage profiles along transmission lines. A simple yet effective
approach to accurately and rapidly obtain the voltage profile along a transmission
line during fault transients is presented. The objective of the presented method is
to eliminate the need to use wave equations and line parameters provided that an
electromagnetic Transients Program (EMTP) type transients simulator is available
for generating bus voltage transients for a given fault. This is accomplished by developing
a time series model to estimate the voltage at an intermediate point along the
transmission line. The model is formed for each intermediate point separately. Once
the model is obtained it can be used to predict the transient voltage at that point
along the line during any fault in the system. The approach can potentially be useful as a post processor to a transient simulator and can be used by developers of transient
animations and movies for illustrating fault-initiated propagation of traveling
waves in power systems. The third problem is the lack of powerful visualization and
animation methods, which can help understanding the complex behavior of power
systems during transients. The goal of this part of the dissertation is to develop new
animation and visualization methods for power system electromagnetic transients for
both educational and research purposes. Proposed approaches are implemented in
different environments such as MATLAB and Microsoft Visual Studio to show the
effectiveness of two and three-dimensional visualization of power system transients.
The implementations of the proposed methods provide better understanding of the
power systems during transient phenomena due to the faults or switchings.
| Identifer | oai:union.ndltd.org:tamu.edu/oai:repository.tamu.edu:1969.1/ETD-TAMU-1103 |
| Date | 15 May 2009 |
| Creators | Evrenosoglu, Cansin Yaman |
| Contributors | Abur, Ali |
| Source Sets | Texas A and M University |
| Language | en_US |
| Detected Language | English |
| Type | Book, Thesis, Electronic Dissertation, text |
| Format | electronic, application/pdf, born digital |
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