An Analysis of Voltage Quality in a Nanogrid during Islanded Operation

Jakob Nömm, Sarah K. Rönnberg and Math H. J. Bollen
Additional contact information
Jakob Nömm: Electric Power Engineering, Luleå University of Technology, 931 87 Skellefteå, Sweden
Sarah K. Rönnberg: Electric Power Engineering, Luleå University of Technology, 931 87 Skellefteå, Sweden
Math H. J. Bollen: Electric Power Engineering, Luleå University of Technology, 931 87 Skellefteå, Sweden

Energies, 2019, vol. 12, issue 4, 1-24

Abstract: Voltage quality data has been collected in a single house nanogrid during 48 weeks of islanded operation and 54 weeks of grid-connected operation. The voltage quality data contains the voltage total harmonic distortion (THD), odd harmonics 3 to 11 and 15, even harmonics 4 to 8, voltage unbalance, short-term flicker severity (Pst) and long-term flicker severity (Plt) values, and voltage variations at timescales below 10 min. A comparison between islanded and grid-connected operation values was made, were some of the parameters were compared to relevant grid standard limits. It is shown that some parameters exceed the defined limits in the grid-standards during islanded operation. It was also found that the islanded operation has two modes of operation, one in which higher values of the short circuit impedance, individual harmonic impedance, harmonic voltage distortion and voltage unbalance were reached.

Keywords: harmonics; islanded operation; nanogrids; power quality; voltage unbalance (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/12/4/614/pdf (application/pdf)
https://www.mdpi.com/1996-1073/12/4/614/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:12:y:2019:i:4:p:614-:d:206190

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().