Title :
Comparison of weighted-least-squares power system state estimation in polar and rectangular coordinate systems
Author :
Okon, Tomasz ; Wilkosz, Kazimierz
Author_Institution :
Inst. of Electr. Power Eng., Wroclaw Univ. of Technol., Wroclaw, Poland
Abstract :
The paper presents a comparative investigations of estimation of power system state in polar and rectangular coordinate systems. The estimation with the use of the weighted least squares method is considered. During investigations, impact of a coordinate system, stress of a power system and a data redundancy on such parameters of a state estimation as: number of iterations, the condition number of the gain matrix and parameters characterizing accuracy of calculation results and reliability of estimation is analyzed.
Keywords :
Least squares approximation; Power measurement; Power system analysis computing; Power system control; Power system measurements; Power system reliability; Power systems; Redundancy; State estimation; Voltage; polar coordinate system; rectangular coordinate system; state estimation;
Conference_Titel :
Environment and Electrical Engineering (EEEIC), 2010 9th International Conference on
Conference_Location :
Prague, Czech Republic
Print_ISBN :
978-1-4244-5370-2
Electronic_ISBN :
978-1-4244-5371-9
DOI :
10.1109/EEEIC.2010.5489955
