Line Impedance Estimation Using Active and Reactive Power Variations

Author

Timbus, Adrian V. ; Rodriguez, Pedro ; Teodorescu, Remus ; Ciobotaru, Mihai

Author_Institution

Aalborg Univ., Aalborg

fYear

2007

Firstpage

1273

Lastpage

1279

Abstract

This paper proposes an estimation method of power system impedance based on power variations caused by a distributed power generation system (DPGS) at the point of common coupling (PCC). The proposed algorithm is computationally simple and uses the voltage variations at the point of common coupling (PCC) caused by the variations of the power delivered to utility network to derive the value of grid impedance. Accurate estimation of both resistive and inductive part of the impedance is obtained, as the results presented show.

Keywords

distributed power generation; power system harmonics; power system parameter estimation; common coupling point; distributed power generation system; grid impedance; line impedance estimation; power system impedance; reactive power variations; Control systems; Distortion measurement; Frequency estimation; Impedance measurement; Photovoltaic systems; Power harmonic filters; Power system harmonics; Power system transients; Reactive power; Voltage; Line impedance; distributed generation; grid converter control; power variations;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2007. PESC 2007. IEEE

Conference_Location

Orlando, FL

ISSN

0275-9306

Print_ISBN

978-1-4244-0654-8

Electronic_ISBN

0275-9306

Type

conf

DOI

10.1109/PESC.2007.4342176

Filename

4342176