Computational Framework for Assessing Voltage Security Using Energy Methods
Klump, Raymond Peter
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https://hdl.handle.net/2142/81353
Description
Title
Computational Framework for Assessing Voltage Security Using Energy Methods
Author(s)
Klump, Raymond Peter
Issue Date
2000
Doctoral Committee Chair(s)
Overbye, Thomas J.
Department of Study
Electrical Engineering
Discipline
Electrical Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Electronics and Electrical
Language
eng
Abstract
This thesis develops a theoretically sound and computationally practical set of tools for assessing and quantifying the voltage security of a power system in terms of an intuitive measure. This measure, called the maximum loading percentage (MLP), expresses the proximity of a system to serving the maximum amount of load it can furnish without experiencing a voltage collapse. When used in conjunction with the adaptive system reduction technique introduced in this research, an effective method of screening the system for areas of concern, and a new, improved method for locating alternative power flow solutions, the proposed measure quickly and accurately evaluates the voltage security of power systems, even those of large dimension. This work also introduces a technique for identifying the most effective controls for mitigating the effects of voltage collapse once it occurs. Finally, it advances power flow calculation methods by offering algorithms that improve the convergence properties of power flow engines in solving modern power system models. The proposed tools are applied to systems ranging in size from two to several thousand buses.
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