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

fYear

2009

fDate

15-18 March 2009

Firstpage

1

Lastpage

6

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/PSCE.2009.4840156

Filename

4840156