Online Network Impedance Spectrometer for the Medium-Voltage Level

Publication date
2018
Document type
Conference paper
Author
Jordan, Michael
Kaatz, Gesa
Wilken, Hauke
Organisational unit
DOI
URI
ISBN
Conference
IEEE International Conference on Environment and Electrical Engineering 2018 and IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe) 2018
Periodical issue
16 October 2018
Part of the university bibliography
✅
Keyword
Mathematical Technique
Identification Method
Stability and Control
Abstract
The network impedance is an essential parameter for power-quality, stability and control design considerations of power systems. The frequency characteristic of the impedance often includes distinct resonances which may also vary over time due to changing load or generation conditions in a network. The time variation as well as the lag of detailed frequency models of different power systems components make an exact analytical or simulative identification of the spectral network impedance challenging. This contribution introduces a novel measurement system. The system can precisely identify the spectral network impedance of power systems at the medium-voltage level (up to 20 kV) from DC to 20 kHz. The basic technical design and the general identification method of the system is illustrated. Furthermore, measurements carried-out with the system at a medium-voltage connection point are presented and discussed. © 2018 IEEE.
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