NDLI: Ancillary services and dynamic behavior of inverters connected to the low voltage grid

Content Provider	IEEE Xplore Digital Library
Author	Dietmannsberger, M. Schulz, D.
Copyright Year	2015
Description	Author affiliation: Dept. of Electr. Power Syst., Helmut Schmidt Univ., Hamburg, Germany (Dietmannsberger, M.; Schulz, D.)
Abstract	Small generators connected to the low voltage grid must be able to provide ancillary services in order to support system stability nowadays and in the future. Grid codes have been implemented that demand for load-frequency control and reactive power control. Together with anti-islanding-detection, these control algorithms mainly affect the dynamic behavior of the inverters in case of loss of mains. In this paper, an inverter model is presented that complies with the major grid codes. Islanding tests show new effects that arise because of the interaction between different control algorithms. Oscillating operating points may occur under special circumstances. This leads to further investigations on frequency dynamics. The additional benefit of rate-of-change-of-frequency (ROCOF) monitoring is numbered in a quantitative analysis and simulation. Not only steady state, but dynamic behavior is investigated with respect to the Non-Detection-Zone (NDZ). It is shown, that using frequency dynamics, scales down NDZs of passive anti-islanding methods significantly.
Starting Page	49
Ending Page	56
File Size	458691
Page Count	8
File Format	PDF
ISSN	21669546
e-ISBN	9781479963010
DOI	10.1109/CPE.2015.7231048
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-06-24
Publisher Place	Portugal
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	mains monitoring Inverters Generators anti-islanding ancillary services rate of change of frequency Standards Reactive power Low voltage inverter control ROCOF Resonant frequency Non Detection Zone
Content Type	Text
Resource Type	Article

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