DocumentCode :
2540351
Title :
Use multi-dimensional ellipsoid to monitor dynamic behavior of power systems based on PMU measurement
Author :
Ma, Jian ; Makarov, Yuri V. ; Miller, Carl H. ; Nguyen, Tony B.
Author_Institution :
Pacific Northwest Nat. Lab. (PNNL), Richland, WA
fYear :
2008
fDate :
20-24 July 2008
Firstpage :
1
Lastpage :
8
Abstract :
The paper discusses a new idea of the multi-dimensional characteristic ellipsoid (CELL) approach to monitor dynamic behavior of an interconnected power system using phasor measurement unit (PMU) measurement. The multi-dimensional minimum volume enclosing ellipsoid (MVEE) is extracted based on phasor measurements to represent the feature of dynamic behavior of power systems. The orientation matrix of MVE describes the shape and orientation of the CELL. Extreme events can be identified by tracking the volume change of the CELL with respect to time. Some feature indexes that can be used to determine the disturbance are also proposed to interpret the dynamic behavior of the power system, and to determine the decision trees for extreme event identification procedure. This method will be a useful tool for providing wide-area situational awareness for grid operators, identification of system disturbances and detection of system stresses and their locations.
Keywords :
decision trees; matrix algebra; multidimensional systems; phase measurement; power grids; power system faults; power system interconnection; PMU measurement; decision trees; dynamic behavior; extreme event identification procedure; grid operators; interconnected power system; multi-dimensional characteristic ellipsoid approach; multidimensional ellipsoid; multidimensional minimum volume enclosing ellipsoid; orientation matrix; phasor measurement unit measurement; system disturbance identification; Ellipsoids; Measurement units; Monitoring; Phasor measurement units; Power measurement; Power system dynamics; Power system interconnection; Power system measurements; Shape; Volume measurement; Minimum volume ellipsoid; PMU measurement; dynamic behavior; extreme events; orientation matrix; singular value decomposition;
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.2008.4596578
Filename :
4596578
Link To Document :
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