Title :
Identifying critical sets in state estimation using Gram matrix
Author :
De Almeida, Madson C. ; Asada, Eduardo N. ; Garcia, Ariovaldo V.
Author_Institution :
Electr. Energy Dept., DEE-CT-UFRN, Natal, Brazil
Abstract :
This paper presents a numerical algorithm for the identification of critical measurements and critical sets in power system state estimation. The proposed algorithm is based on the use of Gram matrix constructed considering the rows of the measurement Jacobian matrix as vectors. This paper shows some features of the Gram matrix that can be useful in the optimal planning of metering systems for power system state estimation. Numerical examples with a 6-bus system and also with IEEE-14 system are used for testing the proposed algorithm.
Keywords :
Jacobian matrices; power system measurement; power system planning; power system state estimation; 6-bus IEEE-14 system; Gram matrix; critical measurement identification; critical set identification; measurement Jacobian matrix; optimal metering system planning; power system state estimation; Gaussian processes; Jacobian matrices; Matrix decomposition; Power measurement; Power system analysis computing; Power system measurements; Power system planning; State estimation; Symmetric matrices; System testing; Gram matrix; critical measurements; critical sets; redundancy analysis; state estimation;
Conference_Titel :
PowerTech, 2009 IEEE Bucharest
Conference_Location :
Bucharest
Print_ISBN :
978-1-4244-2234-0
Electronic_ISBN :
978-1-4244-2235-7
DOI :
10.1109/PTC.2009.5282077
