DocumentCode :
2806899
Title :
Advanced contingency selection methodology
Author :
Stefopoulos, George K. ; Yang, Fang ; Cokkinides, George J. ; MelioPoulos, A. P Sakis
Author_Institution :
Georgia Inst. of Technol., Atlanta, GA, USA
fYear :
2005
fDate :
23-25 Oct. 2005
Firstpage :
67
Lastpage :
73
Abstract :
This paper describes the development and implementation of contingency ranking and selection algorithms, as part of a power system security assessment program. The work concentrates on performance-index-based algorithms and uses a contingency control variable for precise contingency representation. The ranking is based on the value of the sensitivity of the performance index with respect to the contingency control variable for each outage. The computation of the sensitivities is performed using the very efficient co-state method. Furthermore an approach for improving the accuracy of performance-index-based contingency ranking methods is introduced. This approach is based on state rather than performance index linearization with respect to the contingency variable and it provides more accurate results in contingency ranking and selection. The effectiveness of the proposed method in identifying critical contingencies is illustrated using some small test systems. The ultimate goal is to achieve fast and accurate contingency selection, without having to solve the full load-flow problem for each contingency (as is the current utility practice).
Keywords :
power system reliability; power system security; contingency control variable; contingency ranking algorithm; contingency selection methodology; costate method; performance-index-based algorithms; power system security assessment program; Algorithm design and analysis; Hybrid power systems; Load flow; Performance analysis; Power system analysis computing; Power system modeling; Power system reliability; Power system security; System testing; USA Councils;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Symposium, 2005. Proceedings of the 37th Annual North American
Print_ISBN :
0-7803-9255-8
Type :
conf
DOI :
10.1109/NAPS.2005.1560503
Filename :
1560503
Link To Document :
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