Thesis
Fast tuning procedures for emergency controls using eigenvalue computations
Washington State University
Master of Science (MS), Washington State University
2003
Handle:
https://hdl.handle.net/2376/150
Abstract
Remedial action schemes (RAS), also called, special protection schemes, are employed in large power systems for taking automatic corrective control actions in the event of double or multiple contingencies. Typical example of a RAS scheme would be tripping of generation and/or load following a two line outage to relieve excessive loading and to preserve system stability. Unstable limit cycles play a crucial role in determining the transient stability margins of the power systems with weak interarea oscillatory modes. The western American power system WECC(Western Electricity Coordinating Council) is an example where the transient stability is closely related to the existence of unstable limit cycles under certain operating conditions. For these systems, fast computational procedures based on estimation of the damping of the interarea modes, can be used for assessing the RAS generation tripping amounts. In order to concentrate on the factors that have the significant effect on RAS and to study the HVDC effect in power system transient stability, the thesis modifies the standard two-area test system by adding a HVDC link parallel to the AC transmission, which allows us to carry out extensive stability studies using both transient stability simulation tools as well as eigenvalue tools. Eigenvalue based rules are presented in the thesis and the results are illustrated on simulations of the phenomena in the Kundur two area test system which exhibits an interarea oscillatory mode.
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Details
- Title
- Fast tuning procedures for emergency controls using eigenvalue computations
- Creators
- Guangming Zhao
- Contributors
- Vaithianathan Venkatasubramanian (Degree Supervisor)
- Awarding Institution
- Washington State University
- Academic Unit
- Electrical Engineering and Computer Science, School of
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University; Pullman, Wash. :
- Identifiers
- 99900525075201842
- Language
- English
- Resource Type
- Thesis