The Influence of Various Loads to Node Voltage in Power System

Author

Duan Jun-dong ; Liang Jian

Author_Institution

Sch. of Electr. Eng. & Autom., Henan Polytech. Univ., Jiaozuo, China

Volume

2

fYear

2010

fDate

13-14 Oct. 2010

Firstpage

669

Lastpage

672

Abstract

Node voltage is affected by changing loads. The active power-voltage curve and reactive power-voltage curve have some limitations in analyzing the effects of node voltage to the loads. In this thesis, the Thevenin´s equivalent circuit is adopted to make mathematical analysis on the key nodes, and then the function expressions between impedance angle and node voltage is deduced. In the end, a new analysis method for describing the impacts of various loads to node voltage is proposed. The simulations on the 2-machine 5-bus system and New England 10-machine 39-bus system show that this method can be more particular on describing the alteration trends of node voltage nearby critical points.

Keywords

equivalent circuits; mathematical analysis; power system stability; reactive power; 10-machine 39-bus system; 2-machine 5-bus system; New England; Thevenin equivalent circuit; active power-voltage curve; critical points; impedance angle; mathematical analysis; node voltage stability; power system voltage instability; reactive power-voltage curve; Circuit stability; Impedance; Power system stability; Reactive power; Stability criteria; critical points; impedance angle; node voltage; stability limits; the variation of the loads;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent System Design and Engineering Application (ISDEA), 2010 International Conference on

Conference_Location

Changsha

Print_ISBN

978-1-4244-8333-4

Type

conf

DOI

10.1109/ISDEA.2010.412

Filename

5743502