A new method for directly calculating the sensitivity of loading margin

Author

An, Yichun ; Zhang, QingLing ; Zhu, Yukun ; Li, Qin ; Dong, Bin

Author_Institution

Key Lab. of Process Ind. Autom., Northeastern Univ., Shenyang

fYear

2008

fDate

2-4 July 2008

Firstpage

5014

Lastpage

5018

Abstract

The loading margin of power system is influenced easily by parameters of the system, that is, the sensitivity of loading margin with respect to any parameters. A new method is derived in this paper to directly calculate the sensitivity of loading margin to voltage collapse. This method only needs to solve linear equations of system with extended Jacobin matrix. Because of avoiding the iteration step to compute the left eigenvector corresponding to zero eigenvalue, this method is much more simpler and quicker for computing sensitivity, and more applicable for analyzing static voltage stability. A single machine power system model is studied and simulation results verify the validity of the method for large power systems.

Keywords

Jacobian matrices; eigenvalues and eigenfunctions; power system stability; extended Jacobin matrix; linear equations; loading margin sensitivity; power system loading margin; single machine power system model; Eigenvalues and eigenfunctions; Equations; Jacobian matrices; Power system analysis computing; Power system modeling; Power system simulation; Power system stability; Power systems; Stability analysis; Voltage; Differential-algebraic equation; Loading margin; Power system; Saddle-node bifurcation; Sensitivity;

fLanguage

English

Publisher

ieee

Conference_Titel

Control and Decision Conference, 2008. CCDC 2008. Chinese

Conference_Location

Yantai, Shandong

Print_ISBN

978-1-4244-1733-9

Electronic_ISBN

978-1-4244-1734-6

Type

conf

DOI

10.1109/CCDC.2008.4598284

Filename

4598284