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STIEGLER, R. MEYER, J. SCHORI, S. DRÁPELA, J. HÖCKEL, M. SCHEIDA, K. HANŽLÍK, T.
Original Title
SURVEY OF NETWORK IMPEDANCE IN THE FREQUENCY RANGE 2-9 KHZ IN PUBLIC LOW VOLTAGE NETWORKS IN AT/CH/CZ/GE
Type
article in a collection out of WoS and Scopus
Language
English
Original Abstract
Setting realistic emission limits for distorting customer installations is a crucial requirement for a reliable and disturbance-free operation of public distribution networks. Therefore only an adequate share of the total allowable voltage distortion (compatibility level) has to be allocated to each customer installation. This allowable contribution of a single customer installation is usually small and difficult to assess. Hence, nowadays most standards and guidelines translate the allocated voltage distortion in a respective current distortion by using the network impedance at the considered frequency. As frequency-dependent network impedance is usually not known during the planning process, assumptions are required, which have to be realistic and not too conservative. This applies in particular to frequencies above 2 kHz, where the usually used extrapolation based on short circuit impedance can be very conservative due to the increasing impact of connected customer equipment on the network impedance. Based on a comprehensive measurement campaign in four different countries this paper identifies typical ranges of the frequency-dependent network impedance in the frequency range 2-9 kHz. It analyses the impact of short circuit power and proposes a simplified impedance estimation, which can be used to calculate realistic current emission limits in the planning stage.
Keywords
Network impedance, Low-voltage distribution system, Frequency range 2-9 kHz,
Authors
STIEGLER, R.; MEYER, J.; SCHORI, S.; DRÁPELA, J.; HÖCKEL, M.; SCHEIDA, K.; HANŽLÍK, T.
Released
3. 6. 2019
Publisher
IET
Location
Madrid
ISBN
978-2-9602415-0-1
Book
CIRED - Open Access Proceedings Journal
Edition
2019
Edition number
1.
2032-9644
Periodical
CIRED, International Conference and Exhibition on Electricity Distribution
Year of study
Number
1
State
French Republic
Pages from
Pages to
5
Pages count
BibTex
@inproceedings{BUT156639, author="Robert {STIEGLER} and Jan {MEYER} and Stefan {SCHORI} and Jiří {Drápela} and Michael {HÖCKEL} and Karl {SCHEIDA} and Tomáš {Hanžlík}", title="SURVEY OF NETWORK IMPEDANCE IN THE FREQUENCY RANGE 2-9 KHZ IN PUBLIC LOW VOLTAGE NETWORKS IN AT/CH/CZ/GE", booktitle="CIRED - Open Access Proceedings Journal", year="2019", series="2019", journal="CIRED, International Conference and Exhibition on Electricity Distribution", volume="2019", number="1", pages="1--5", publisher="IET", address="Madrid", doi="10.34890/628", isbn="978-2-9602415-0-1", issn="2032-9644" }