Title :
State observation in medium-voltage grids with incomplete measurement infrastructure through online correction of power forecasts
Author :
Heins, Wiebke ; Ell, Nikola ; Beck, Hans-Peter ; Bohn, Christian
Author_Institution :
Inst. of Electr. Inf. Technol. resp. the Inst. of Electr. Power Eng., Clausthal Univ. of Technol., Clausthal-Zellerfeld, Germany
Abstract :
A method for determining the grid state of a medium voltage electrical power grid with incomplete measurements is proposed. It is based on estimating the vector of active and reactive power through voltage magnitude and angle measurements with an Iterated Extended Kalman Filter for a simplified dynamic model of the grid in quasi-stationary conditions. Through rough forecasts of load and generation data, it is possible to get an accurate voltage magnitude and angle estimate even for buses without any measurement. Simulation results are obtained for a UKGDS network model.
Keywords :
Kalman filters; iterative methods; load forecasting; power grids; power system measurement; UKGDS network model; active power vector estimation; incomplete measurement infrastructure; iterated extended Kalman filter; load power forecast online correction; medium voltage electrical power grid; quasistationary conditions; reactive power vector estimation; simplified dynamic model; state observation; voltage magnitude; Equations; Mathematical model; Power measurement; Reactive power; State estimation; Vectors; Voltage measurement;
Conference_Titel :
Control Conference (ECC), 2014 European
Conference_Location :
Strasbourg
Print_ISBN :
978-3-9524269-1-3
DOI :
10.1109/ECC.2014.6862514
