Title :
Research on state estimation of regional power grid based on improved least squares method
Author :
Wei, Liming ; Zhao, Shan
Author_Institution :
Electr. & Electron. Eng. Sch., Jilin Inst. of Archit. & Civil Eng., Changchun, China
Abstract :
Fundamental principle and function of state estimation software in regional power system are described in this paper. The weighted least square method based on fixed Jacobian matrix combined with the orthogonal transform is used for algorithm. A good stability in computing value and computing speed can be obtained by using the algorithm. The method of state forecast combined with standard residuals is used for detecting bad data to ensure estimation accuracy.
Keywords :
least squares approximations; power grids; power system analysis computing; power system state estimation; fixed Jacobian matrix; least square method; orthogonal transform; regional power grid; state estimation software; Jacobian matrices; Power system stability; Software; Software algorithms; State estimation; Transmission line matrix methods; Transmission line measurements; energy management system; improved least squares method; orthogonal transformation; state estimation;
Conference_Titel :
Mechanic Automation and Control Engineering (MACE), 2011 Second International Conference on
Conference_Location :
Hohhot
Print_ISBN :
978-1-4244-9436-1
DOI :
10.1109/MACE.2011.5988814
