A New Method of On-line Grid Impedance Estimation for PV Inverter

Remus Teodorescu; Lucian Asiminoaei; Frede Blaabjerg; Uffe Borup

doi:10.1109/APEC.2004.1296067

A New Method of On-line Grid Impedance Estimation for PV Inverter

Remus Teodorescu, Lucian Asiminoaei, Frede Blaabjerg, Uffe Borup

AAU Energy

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research

84 Citations (Scopus)

Abstract

The recent increase in photo-voltaic (PV) installations calls for new and better power quality requirements with respect to connection to the grid supply. Therefore, different methods are typically used for continuous grid monitoring, usually by using external devices. In this paper a new method for on-line measuring the grid impedance is presented. The presented method requires no extra hardware being accommodated by typical PV inverters, sensors and CPU, to provide a fast and low cost approach of on-line impedance measurement. By injecting a non-characteristic harmonic current and measuring the voltage grid response it is possible to evaluate the grid impedance. Practical test on an existing PV inverter validate the new method.

Original language	English
Title of host publication	Proceedings of APEC '04,
Volume	3
Publisher	IEEE Signal Processing Society
Publication date	2004
Pages	1527-1533
ISBN (Print)	0-7803-8269-2
DOIs	https://doi.org/10.1109/APEC.2004.1296067
Publication status	Published - 2004
Event	Nineteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2004. APEC '04. - Anaheim, Californien, United States Duration: 22 Feb 2004 → 26 Feb 2004 Conference number: 19

Conference

Conference	Nineteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2004. APEC '04.
Number	19
Country/Territory	United States
City	Anaheim, Californien
Period	22/02/2004 → 26/02/2004

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title = "A New Method of On-line Grid Impedance Estimation for PV Inverter",

abstract = "The recent increase in photo-voltaic (PV) installations calls for new and better power quality requirements with respect to connection to the grid supply. Therefore, different methods are typically used for continuous grid monitoring, usually by using external devices. In this paper a new method for on-line measuring the grid impedance is presented. The presented method requires no extra hardware being accommodated by typical PV inverters, sensors and CPU, to provide a fast and low cost approach of on-line impedance measurement. By injecting a non-characteristic harmonic current and measuring the voltage grid response it is possible to evaluate the grid impedance. Practical test on an existing PV inverter validate the new method.",

author = "Remus Teodorescu and Lucian Asiminoaei and Frede Blaabjerg and Uffe Borup",

year = "2004",

doi = "10.1109/APEC.2004.1296067",

language = "English",

isbn = "0-7803-8269-2",

volume = "3",

pages = "1527--1533",

booktitle = "Proceedings of APEC '04,",

publisher = "IEEE Signal Processing Society",

address = "United States",

note = "Nineteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2004. APEC '04. ; Conference date: 22-02-2004 Through 26-02-2004",

}

Teodorescu, R, Asiminoaei, L, Blaabjerg, F & Borup, U 2004, A New Method of On-line Grid Impedance Estimation for PV Inverter. in Proceedings of APEC '04,. vol. 3, IEEE Signal Processing Society, pp. 1527-1533, Nineteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2004. APEC '04., Anaheim, Californien, United States, 22/02/2004. https://doi.org/10.1109/APEC.2004.1296067

TY - GEN

T1 - A New Method of On-line Grid Impedance Estimation for PV Inverter

AU - Teodorescu, Remus

AU - Asiminoaei, Lucian

AU - Blaabjerg, Frede

AU - Borup, Uffe

N1 - Conference code: 19

PY - 2004

Y1 - 2004

N2 - The recent increase in photo-voltaic (PV) installations calls for new and better power quality requirements with respect to connection to the grid supply. Therefore, different methods are typically used for continuous grid monitoring, usually by using external devices. In this paper a new method for on-line measuring the grid impedance is presented. The presented method requires no extra hardware being accommodated by typical PV inverters, sensors and CPU, to provide a fast and low cost approach of on-line impedance measurement. By injecting a non-characteristic harmonic current and measuring the voltage grid response it is possible to evaluate the grid impedance. Practical test on an existing PV inverter validate the new method.

AB - The recent increase in photo-voltaic (PV) installations calls for new and better power quality requirements with respect to connection to the grid supply. Therefore, different methods are typically used for continuous grid monitoring, usually by using external devices. In this paper a new method for on-line measuring the grid impedance is presented. The presented method requires no extra hardware being accommodated by typical PV inverters, sensors and CPU, to provide a fast and low cost approach of on-line impedance measurement. By injecting a non-characteristic harmonic current and measuring the voltage grid response it is possible to evaluate the grid impedance. Practical test on an existing PV inverter validate the new method.

U2 - 10.1109/APEC.2004.1296067

DO - 10.1109/APEC.2004.1296067

M3 - Article in proceeding

SN - 0-7803-8269-2

VL - 3

SP - 1527

EP - 1533

BT - Proceedings of APEC '04,

PB - IEEE Signal Processing Society

T2 - Nineteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2004. APEC '04.

Y2 - 22 February 2004 through 26 February 2004

ER -

A New Method of On-line Grid Impedance Estimation for PV Inverter

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