Reproducibility of Network Impedance Measurements Using Single-Frequency and Broadband Signal Injection
Research output: Contribution to book/Conference proceedings/Anthology/Report › Conference contribution › Contributed › peer-review
Contributors
Abstract
Characterization of frequency-dependent network impedance is vital for harmonic emission evaluation, stability studies as well as for the optimum design of power-line communication technologies. This work presents a simulation-based performance comparison of three techniques that are used to obtain the network harmonic impedance. Two broadband methods, the passive pseudo-random binary sequence and the active pseudo-random impulse sequence, and the single-frequency injection are investigated. The methods are first applied to a passive network and then extended to a network with nonlinear equipment such as power electronic converters. The methods' performance is evaluated in terms of mean impedance and sub-cycle impedance. While the results of all three methods are comparable for the passive network, it differs in the presence of nonlinear devices, especially for the sub-cycle impedance, with the single-frequency injection method demonstrating superior results. The passive-pseudo-random binary sequence method is inferior in the characterization of both average and sub-cycle impedance due to the absence of perturbations around the zero-crossings of the recorded line voltage. These results point to the need to carefully evaluate the perturbation techniques for accurate measurement of network impedance.
Details
Original language | English |
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Title of host publication | 2023 13th IEEE International Workshop on Applied Measurements for Power Systems, AMPS 2023 - Proceedings |
Publisher | IEEE |
Pages | 1-6 |
Number of pages | 6 |
ISBN (electronic) | 9798350312409 |
ISBN (print) | 979-8-3503-1241-6 |
Publication status | Published - 29 Sept 2023 |
Peer-reviewed | Yes |
Conference
Title | 2023 IEEE 13th International Workshop on Applied Measurements for Power Systems |
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Abbreviated title | AMPS 2023 |
Conference number | 13 |
Duration | 27 - 29 September 2023 |
Website | |
Degree of recognition | International event |
Location | Swiss Federal Institute of Metrology (METAS) |
City | Bern |
Country | Switzerland |
External IDs
ORCID | /0000-0002-9052-3838/work/146167223 |
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Scopus | 85178068978 |
Keywords
ASJC Scopus subject areas
Keywords
- Performance evaluation, Passive networks, Impedance measurement, Power measurement, Power system harmonics, Harmonic analysis, Frequency measurement, frequency response measurement, harmonics, impedance measurement, Network harmonic impedance, nonlinear loads, power quality, sub-cycle impedance