Title :
PQ-coupled difference equation model for power system load
Author :
Bai Jianhua ; Gao Jingde ; Shen Shande ; Zhu Shouzhen
Author_Institution :
Econ. Res. Inst. of Water Resources & Electr. Power, Beijing, China
Abstract :
In this paper, a second order PQ-coupled difference equation load model (PQ-DELM) is derived, which takes the interrelation between active and reactive currents into account. Load modeling is revealed to be a closed loop identification problem, and for the parameter estimation of the PQ-DELM an instrumental variable (IV) algorithm is put forward. The field test of actual load and the test in the laboratory validate the PQ-DELM and the IV algorithm.<>
Keywords :
difference equations; digital simulation; load (electric); parameter estimation; power system analysis computing; reactive power; CPU time; PQ-coupled difference equation load model; active current; closed loop identification problem; instrumental variable algorithm; parameter estimation; power system load; reactive current; Difference equations; Frequency; Induction motors; Load modeling; Nonlinear equations; Parameter estimation; Power system analysis computing; Power system economics; Power system modeling; System testing;
Conference_Titel :
TENCON '93. Proceedings. Computer, Communication, Control and Power Engineering.1993 IEEE Region 10 Conference on
Conference_Location :
Beijing, China
Print_ISBN :
0-7803-1233-3
DOI :
10.1109/TENCON.1993.320611
