Abstract
New and stronger power quality requirements are issued due to the increase amount of photo-voltaic (PV) installations. In this paper different methods are used for continuous grid monitoring. By injecting a non-characteristic harmonic current and measuring the grid voltage response it is possible to evaluate the grid impedance directly by the PV-inverter, providing a fast and low cost implementation. This principle theoretically provides a correct result of the grid impedance but when using it into the context of PV integration, different implementation issues strongly affect the quality of the results. This paper presents a new impedance estimation method including typical implementation problems encountered and it also presents adopted solutions for on-line grid impedance measurement. Practical tests on an existing PV-inverter validate the chosen solutions.
Originalsprog | Engelsk |
---|---|
Titel | Proceedings of PESC 2004 |
Vol/bind | 4 |
Forlag | IEEE Signal Processing Society |
Publikationsdato | 2004 |
Sider | 3095-3101 |
ISBN (Trykt) | 0-7803-8399-0 |
DOI | |
Status | Udgivet - 2004 |
Begivenhed | 2004 IEEE 35th Annual Power Electronics Specialists Conference, 2004. PESC 04. - Aachen, Tyskland Varighed: 20 jun. 2004 → 25 jun. 2004 Konferencens nummer: 35 |
Konference
Konference | 2004 IEEE 35th Annual Power Electronics Specialists Conference, 2004. PESC 04. |
---|---|
Nummer | 35 |
Land/Område | Tyskland |
By | Aachen |
Periode | 20/06/2004 → 25/06/2004 |