Damping of electromechanical oscillations using power system stabilizers

 

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dc.contributor.advisor Petroianu, Alexander en_ZA
dc.contributor.author Ahmed, Shaheen Sooleman en_ZA
dc.date.accessioned 2014-11-15T19:35:49Z
dc.date.available 2014-11-15T19:35:49Z
dc.date.issued 1995 en_ZA
dc.identifier.citation Ahmed, S. 1995. Damping of electromechanical oscillations using power system stabilizers. University of Cape Town. en_ZA
dc.identifier.uri http://hdl.handle.net/11427/9644
dc.description Includes bibliographical references. en_ZA
dc.description.abstract This thesis deals with the damping of electromechanical oscillations using Power System Stabilizers (PSS). The thesis focuses on three problems associated with the damping of these oscillations, namely the determination of the optimal locations of the PSS, the determination of the best control structure of the PSS and the design of robust PSS. We develop two new methods for determining the optimal locations of the PSS. These two methods are based on Total Modified Coupling Factors (TMC) and optimization by Simulated Annealing (SA). The TMC is a measure of the damping influence of each machine pair on several power system modes. The TMC incorporates the effect of the performance and the type of excitation system of the generator. The method based on TMC is tested on a nine-bus benchmark network. In the method based on SA, we formulate the PSS placement problem as a discrete nonlinear optimization problem. The objective function corresponds to the damping of the electromechanical modes of the system. In this method, the placement is performed simultaneously for all PSS. Using SA, we obtain a placement scheme which guarantees that the undesired poles can be controlled with finite control energy. As a result of the optimization formulation, the method based on SA is computationally more intensive than the method based on TMC. We demonstrate the method based on SA on two networks namely, a seven-bus network and a 35-bus equivalent of the Eskom network. The problem of determining the control structure for damping of the electromechanical oscillations is composed of three aspects namely, the type of feedback, the type of signal and the type of control. en_ZA
dc.language.iso eng en_ZA
dc.subject.other Electrical Engineering en_ZA
dc.title Damping of electromechanical oscillations using power system stabilizers en_ZA
dc.type Doctoral Thesis
uct.type.publication Research en_ZA
uct.type.resource Thesis en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Engineering and the Built Environment
dc.publisher.department Department of Electrical Engineering en_ZA
dc.type.qualificationlevel Doctoral
dc.type.qualificationname PhD en_ZA
uct.type.filetype Text
uct.type.filetype Image
dc.identifier.apacitation Ahmed, S. S. (1995). <i>Damping of electromechanical oscillations using power system stabilizers</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering. Retrieved from http://hdl.handle.net/11427/9644 en_ZA
dc.identifier.chicagocitation Ahmed, Shaheen Sooleman. <i>"Damping of electromechanical oscillations using power system stabilizers."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering, 1995. http://hdl.handle.net/11427/9644 en_ZA
dc.identifier.vancouvercitation Ahmed SS. Damping of electromechanical oscillations using power system stabilizers. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering, 1995 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/9644 en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Ahmed, Shaheen Sooleman AB - This thesis deals with the damping of electromechanical oscillations using Power System Stabilizers (PSS). The thesis focuses on three problems associated with the damping of these oscillations, namely the determination of the optimal locations of the PSS, the determination of the best control structure of the PSS and the design of robust PSS. We develop two new methods for determining the optimal locations of the PSS. These two methods are based on Total Modified Coupling Factors (TMC) and optimization by Simulated Annealing (SA). The TMC is a measure of the damping influence of each machine pair on several power system modes. The TMC incorporates the effect of the performance and the type of excitation system of the generator. The method based on TMC is tested on a nine-bus benchmark network. In the method based on SA, we formulate the PSS placement problem as a discrete nonlinear optimization problem. The objective function corresponds to the damping of the electromechanical modes of the system. In this method, the placement is performed simultaneously for all PSS. Using SA, we obtain a placement scheme which guarantees that the undesired poles can be controlled with finite control energy. As a result of the optimization formulation, the method based on SA is computationally more intensive than the method based on TMC. We demonstrate the method based on SA on two networks namely, a seven-bus network and a 35-bus equivalent of the Eskom network. The problem of determining the control structure for damping of the electromechanical oscillations is composed of three aspects namely, the type of feedback, the type of signal and the type of control. DA - 1995 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1995 T1 - Damping of electromechanical oscillations using power system stabilizers TI - Damping of electromechanical oscillations using power system stabilizers UR - http://hdl.handle.net/11427/9644 ER - en_ZA


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