Thesis (M.E.) -- University of Adelaide, Dept. of Electrical Engineering, 1980. / Typescript (photocopy).

Thesis (Ph. D.)--Washington State University. / Includes bibliographical references.

Thesis (Ph. D.)--University of Hong Kong, 1990.

Thesis (Ph. D.)--University of Hong Kong, 1997. / Includes bibliographical references.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1983. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Bibliography; leaves 159-166.

Thesis (M.S.)--Tennessee Technological University, 2009. / Title from title page screen (viewed on June 29, 2010). Bibliography: leaves 105-108.

This thesis presents a method to do transient simulation of a large power system using dynamic phasors and electromagnetic transient simulation. A novel hybrid simulation technique using dynamic phasor equivalent is presented to analyse a part of a large power system. Electromagnetic transient simulation is used to model the part of the network that needs detailed simulation. The synchronous reference frame phase locked loop is implemented as the interface between the electromagnetic transient model and the dynamic phasor model. Two types of positive sequence filters i) sinusoidal signal integrator phase locked loop ii) extended phase locked loop are presented to eliminate the voltage unbalance effect in a phase locked loop. A comparison of the performance of the two filters is presented. The validation of the proposed interface is done using EMT simulation on real time digital simulator. Finally the numerical problems involved in this hybrid method are discussed. / February 2016

The Blue Nile Grid of Sudan, which supplies Electrical Power to the central region including the capital, Khartoum, has experienced a history of problems, of which the most important are the instability of the system and the generation shortages, which become particularly acute during certain months of the year. These problems have been complicated by a lack of real understanding of the system's behaviour, especially as it grows in size and complexity, and as the demand increases.

Basic goal of power system is to continuously provide electrical energy to the users. Like with any other system, failures in power system can occur. In those situations it is critical that correct remedial actions are applied as soon as possible after the accurate fault condition and location are detected. This thesis has been focusing on automated fault location procedure. Different fault location algorithms, classified according to the spatial placement of physical measurements on single ended, multiple ended and sparse system-wide, are investigated. As outcome of this review, methods are listed as function of different parameters that influence their accuracy. This comparison is than used for generating procedure for optimal fault location algorithm selection. According to available data, and position of the fault with respect to the data, proposed procedure decides between different algorithms and selects an optimal one. A new approach is developed by utilizing different data structures such as binary tree and serialization in order to efficiently implement algorithm decision engine. After accuracy of algorithms is strongly influenced by available input data, different data sources are recommended in proposed architecture such as the digital fault recorders, circuit breaker monitoring, SCADA, power system model and etc. Algorithm for determining faulted section is proposed based on the data from circuit breaker monitoring devices. This algorithm works in real time by recognizing to which sequence of events newly obtained recording belongs. Software prototype of the proposed automated fault location analysis is developed using Java programming language. Fault location analysis is automatically triggered by appearance of new event files in a specific folder. The tests were carried out using the real life transmission system as an example.

Basic goal of power system is to continuously provide electrical energy to the users. Like with any other system, failures in power system can occur. In those situations it is critical that correct remedial actions are applied as soon as possible after the accurate fault condition and location are detected. This thesis has been focusing on automated fault location procedure. Different fault location algorithms, classified according to the spatial placement of physical measurements on single ended, multiple ended and sparse system-wide, are investigated. As outcome of this review, methods are listed as function of different parameters that influence their accuracy. This comparison is than used for generating procedure for optimal fault location algorithm selection. According to available data, and position of the fault with respect to the data, proposed procedure decides between different algorithms and selects an optimal one. A new approach is developed by utilizing different data structures such as binary tree and serialization in order to efficiently implement algorithm decision engine. After accuracy of algorithms is strongly influenced by available input data, different data sources are recommended in proposed architecture such as the digital fault recorders, circuit breaker monitoring, SCADA, power system model and etc. Algorithm for determining faulted section is proposed based on the data from circuit breaker monitoring devices. This algorithm works in real time by recognizing to which sequence of events newly obtained recording belongs. Software prototype of the proposed automated fault location analysis is developed using Java programming language. Fault location analysis is automatically triggered by appearance of new event files in a specific folder. The tests were carried out using the real life transmission system as an example.