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Title: Analysis of stressed interconnected power networks. Final report

Abstract

Today`s heavily loaded and stressed power transmission networks exhibit complex dynamic behavior when subjected to small or large disturbances. When subjected to small disturbances, the main concern is the power system conditions which lead to the phenomenon known as interarea mode oscillations. These modes are influenced by states of generators and associated controls which are electrically and physically far away from each other. In this project normal forms of vector fields are used to identify the nonlinear interaction among the power system natural modes of oscillation. These interactions are then quantified in terms of the modal solutions in the original system states. Second order analysis shows potentially large interactions, identifies the interacting modes and gives the machines involved in this interaction. The application of normal form analysis to power system dynamics results in a correction to the linear picture seen using Eigenanalysis. The effect of the nonlinear modal interactions on control performance is also analyzed. The normal form analysis is used to pinpoint the modes associated in the interaction and the extend to which they interact. As a result, relevant control modes which have influence on the interarea mode could be identified. Steps could then be taken to appropriately designmore » and select control parameters taking into account the nonlinear nature of the interaction. The normal form approach has been tested on two power networks: a two area, four generator system and the 50-generator IEEE test system. The results obtained demonstrate the efficacy of the technique and illustrate its potential in incorporating nonlinear effects in the design and analysis on control components.« less

Authors:
; ; ; ;  [1]
  1. Iowa State Univ. of Science and Technology, Ames, IA (United States). Dept. of Electrical Engineering
Publication Date:
Research Org.:
Electric Power Research Inst., Palo Alto, CA (United States); Iowa State Univ. of Science and Technology, Ames, IA (United States). Dept. of Electrical Engineering
Sponsoring Org.:
Electric Power Research Inst., Palo Alto, CA (United States)
OSTI Identifier:
10143546
Report Number(s):
EPRI-TR-103704
ON: UN94010197
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Mar 1994
Country of Publication:
United States
Language:
English
Subject:
24 POWER TRANSMISSION AND DISTRIBUTION; 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; POWER SYSTEMS; MATHEMATICAL MODELS; INTERCONNECTED POWER SYSTEMS; OSCILLATIONS; COMPUTERIZED SIMULATION; DYNAMICS; STABILITY; 240100; 990200; MATHEMATICS AND COMPUTERS

Citation Formats

Fouad, A.A., Vittal, V., Kliemann, W., Starrett, S.K., and Lin, C.M. Analysis of stressed interconnected power networks. Final report. United States: N. p., 1994. Web.
Fouad, A.A., Vittal, V., Kliemann, W., Starrett, S.K., & Lin, C.M. Analysis of stressed interconnected power networks. Final report. United States.
Fouad, A.A., Vittal, V., Kliemann, W., Starrett, S.K., and Lin, C.M. Tue . "Analysis of stressed interconnected power networks. Final report". United States.
@article{osti_10143546,
title = {Analysis of stressed interconnected power networks. Final report},
author = {Fouad, A.A. and Vittal, V. and Kliemann, W. and Starrett, S.K. and Lin, C.M.},
abstractNote = {Today`s heavily loaded and stressed power transmission networks exhibit complex dynamic behavior when subjected to small or large disturbances. When subjected to small disturbances, the main concern is the power system conditions which lead to the phenomenon known as interarea mode oscillations. These modes are influenced by states of generators and associated controls which are electrically and physically far away from each other. In this project normal forms of vector fields are used to identify the nonlinear interaction among the power system natural modes of oscillation. These interactions are then quantified in terms of the modal solutions in the original system states. Second order analysis shows potentially large interactions, identifies the interacting modes and gives the machines involved in this interaction. The application of normal form analysis to power system dynamics results in a correction to the linear picture seen using Eigenanalysis. The effect of the nonlinear modal interactions on control performance is also analyzed. The normal form analysis is used to pinpoint the modes associated in the interaction and the extend to which they interact. As a result, relevant control modes which have influence on the interarea mode could be identified. Steps could then be taken to appropriately design and select control parameters taking into account the nonlinear nature of the interaction. The normal form approach has been tested on two power networks: a two area, four generator system and the 50-generator IEEE test system. The results obtained demonstrate the efficacy of the technique and illustrate its potential in incorporating nonlinear effects in the design and analysis on control components.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {3}
}

Technical Report:
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