Doctoral Dissertations


Power grid flow control studies and high speed simulation


"Flexible AC transmission System (FACTS) devices, which use high-speed, high-power semiconductor technology to better control power grids, are expected to be vital components to regulate an increasingly overburdened and under regulated transmission system. The work presented here demonstrates that the most general of these devices, the Unified Power Flow Controller (UPFC), may be able to reduce the kinds of power flows that lead to cascading failures. A comprehensive plan to use the UPFC as a theoretical super set of FACTS devices is proposed, which can be used to significantly harden power grids against both intentional and natural failures. Finally, a set of techniques for high speed simulation is developed which can be used in conjunction with the proposed hardening plan to allow it to be scaled to actual systems"--Abstract, page iv.


Tauritz, Daniel R.
Miller, Ann K.

Committee Member(s)

Wunsch, Donald C.
McMillin, Bruce M.
Crow, Mariesa


Electrical and Computer Engineering

Degree Name

Ph. D. in Computer Engineering


University of Missouri--Rolla

Publication Date

Spring 2007

Journal article titles appearing in thesis/dissertation

  • Improving grid fault tolerance by optimal control of FACTS devices
  • Using a simple UPFC model to identify optimal UPFC control settings
  • Power grid protection via FACTS devices
  • Symbolic reduction for high-speed power simulation


ix, 74 pages

Note about bibliography

Includes bibliographical references.


© 2007 William Michael Siever, All rights reserved.

Document Type

Dissertation - Citation

File Type




Subject Headings

Electric power failures -- Prevention
Electric power systems -- Simulation methods
Electric power transmission
Flexible AC transmission systems

Thesis Number

T 9211

Print OCLC #


Link to Catalog Record

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