DocumentCode :
2537025
Title :
An online dynamic security assessment scheme using phasor measurements and decision trees
Author :
Sun, Kai ; Likhate, Siddharth ; Vittal, Vijay ; Kolluri, Sharma ; Mandal, Sujit
Author_Institution :
EPRI, Palo Alto, CA
fYear :
2008
fDate :
20-24 July 2008
Firstpage :
1
Lastpage :
1
Abstract :
This paper describes an online dynamic security assessment scheme for large-scale interconnected power systems using phasor measurements and decision trees. The scheme builds and periodically updates decision trees offline to decide critical attributes as security indicators. Decision trees provide online security assessment and preventive control guidelines based on real-time measurements of the indicators from phasor measurement units. The scheme uses a new classification method involving each whole path of a decision tree instead of only classification results at terminal nodes to provide more reliable security assessment results for changes in system conditions. The approaches developed are tested on a 2100-bus, 2600-line, 240-generator operational model of the Entergy system. The test results demonstrate that the proposed scheme is able to identify key security indicators and give reliable and accurate online dynamic security predictions.
Keywords :
decision trees; power system interconnection; power system measurement; power system security; decision trees; large-scale interconnected power systems; online dynamic security assessment scheme; phasor measurements; preventive control guidelines; Classification tree analysis; Decision trees; Guidelines; Large-scale systems; Phasor measurement units; Power measurement; Power system dynamics; Power system interconnection; Power system measurements; Power system security;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century, 2008 IEEE
Conference_Location :
Pittsburgh, PA
ISSN :
1932-5517
Print_ISBN :
978-1-4244-1905-0
Electronic_ISBN :
1932-5517
Type :
conf
DOI :
10.1109/PES.2008.4596398
Filename :
4596398
Link To Document :
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