S
Sarah K. Ronnberg
Researcher at Luleå University of Technology
Publications - 112
Citations - 2485
Sarah K. Ronnberg is an academic researcher from Luleå University of Technology. The author has contributed to research in topics: LED lamp & Harmonic. The author has an hindex of 24, co-authored 112 publications receiving 1806 citations.
Papers
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Journal ArticleDOI
Power Quality Concerns in Implementing Smart Distribution-Grid Applications
Math Bollen,Ratan Das,Sasa Z. Djokic,Phil Ciufo,Jan Meyer,Sarah K. Ronnberg,Francisc Zavodam +6 more
TL;DR: This paper maps the expected and possible adverse consequences for power quality of introducing several smart distribution-grid technologies and applications and recommends recommendations based on the mapping.
Journal ArticleDOI
On waveform distortion in the frequency range of 2 kHz–150 kHz—Review and research challenges
Sarah K. Ronnberg,Math Bollen,Hortensia Amaris,Gary W. Chang,Irene Yu-Hua Gu,Łukasz Hubert Kocewiak,Jan Meyer,Magnus Olofsson,Paulo F. Ribeiro,Jan Desmet +9 more
TL;DR: An overview of the state-of-the-art concerning these so-called supraharmonics, and noticeably indicates the research challenges associated with waveform distortion in this frequency range.
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Standards for supraharmonics (2 to 150 kHz)
TL;DR: Some of the properties of harmonics and supraharmonics are compared and a proposal is made for setting limits in this frequency range based on existing standards and meant to be for discussion.
Journal ArticleDOI
Hosting Capacity of the Power Grid for Renewable Electricity Production and New Large Consumption Equipment
Math Bollen,Sarah K. Ronnberg +1 more
TL;DR: In this paper, the hosting capacity approach is presented as a tool for distribution-system planning under uncertainty, and a brief historical introduction to the hosting-capacity approach is given, followed by a discussion of its application in distributed systems.
Journal ArticleDOI
Measurements of High-Frequency (2–150 kHz) Distortion in Low-Voltage Networks
TL;DR: In this article, different methods to describe voltage and current distortion in the frequency range 2 to 150 kHz were presented, where the time-frequency domain was shown to give additional information next to the time and frequency-domain representations.