Title :
Analysis method of voltage stability for bulk power system by P-V and Q-V curves considering dynamic load
Author :
Lian, S. ; Minami, S. ; Morii, S. ; Kawamoto, S.
Author_Institution :
Dept. of Electr. & Inf. Syst., Osaka Prefecture Univ., Sakai
Abstract :
A novel analysis method of the voltage stability for bulk power system is proposed by introducing the P-V and the Q-V curves based on the dynamic load. Firstly, a bulk power system is exactly rewritten into a simple nonlinear decentralized system by the power flow calculation. Next, the dynamic load is modeled in a higher order polynomial form identified from the observed data at a load-bus. Then, the system and the load P-V and Q-V curves are constructed, and finally the reactive power is shown to be more sensitive to the voltage stability than the active one by considering the curves.
Keywords :
decentralised control; nonlinear control systems; polynomials; power system stability; P-V curves; Q-V curves; bulk power system; dynamic load; higher order polynomial form; nonlinear decentralized system; power flow calculation; voltage stability; Load flow; Load modeling; Nonlinear dynamical systems; Polynomials; Power system analysis computing; Power system dynamics; Power system modeling; Power system stability; Stability analysis; Voltage; Dynamic load; Electric power system; Nonlinear load model; P-V curve; Q-V curve; Voltage stability;
Conference_Titel :
Power Systems Conference and Exposition, 2009. PSCE '09. IEEE/PES
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4244-3810-5
Electronic_ISBN :
978-1-4244-3811-2
DOI :
10.1109/PSCE.2009.4840156
