DocumentCode :
2908555
Title :
Numerical observability analysis of distribution systems
Author :
Gelagaev, Ratmir ; Vermeyen, Pieter ; Vandewalle, Joos ; Driesen, Johan
Author_Institution :
Dept. of Electr. Eng. ESAT, Katholieke Univ. Leuven, Leuven, Belgium
fYear :
2010
fDate :
26-29 Sept. 2010
Firstpage :
1
Lastpage :
6
Abstract :
Observability analysis is a very important tool in state estimation. For a given set of measurements and their geographical location in the system, it determines whether the state of the whole system can be estimated. In this paper a numerical observability analysis, applicable to distribution systems is discussed and applied to the IEEE 34 bus test feeder. The method is based on the inverse function theory and the Jacobian matrix of the system. By calculating the dependent columns of the Jacobian matrix it is possible to determine the unobservable branches in the system. This also gives an indication of how many linearly independent pseudo-measurements are required to make the distribution system observable. Because the R=X ratio is not negligible in the distribution lines, a transformation has been used to simplify the observability analysis.
Keywords :
Jacobian matrices; observability; power distribution; power system state estimation; IEEE 34 bus test feeder; Jacobian matrix; distribution lines; distribution systems; geographical location; inverse function theory; linearly independent pseudomeasurements; numerical observability analysis; state estimation; Equations; Jacobian matrices; Mathematical model; Matrix decomposition; Observability; Power measurement; Reactive power; State estimation; observability analysis; observable islands;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Harmonics and Quality of Power (ICHQP), 2010 14th International Conference on
Conference_Location :
Bergamo
Print_ISBN :
978-1-4244-7244-4
Electronic_ISBN :
978-1-4244-7245-1
Type :
conf
DOI :
10.1109/ICHQP.2010.5625500
Filename :
5625500
Link To Document :
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