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Keyword: Medium-Voltage

Condition Assessment of Medium Voltage Assets: A Review

by Eilin Gómez Mesino, Joaquín Caicedo, Miguel Mamaní, David Romero Quete, Andrés Cerón Piamba, Diego García Gómez, Guillermo Aponte Mayor, José Caicedo Erazo, Wilmar Moreno López, Edward Jay and Andrés Romero Quete

Advances in Science, Technology and Engineering Systems Journal, Volume 8, Issue 5, Page # 35–54, 2023; DOI: 10.25046/aj080505

Abstract:

Condition assessment of medium voltage assets is essential to ensure reliability and cost-effective operation of power distribution networks. This article presents a literature review of condition assessment of medium voltage assets related to a distribution system in a non-interconnected zone in Colombia, namely, power transformers, photovoltaic systems, switchgear, lines and cables, and instrument transformers. Advanced…

Spectral Grid Impedance Identification on the Low-, Medium- and High-Voltage Level – System Design, Realization and Measurement Results of Grid Impedance Measurement Devices

by Hauke Wilken, Michael Jordan and Detlef Schulz

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 1, Page # 8–16, 2019; DOI: 10.25046/aj040102

Abstract:

The frequency dependent grid impedance at the terminals of an electrical supply grid is an essential parameter for power quality and grid feedback analysis. In this contribution the identification of the grid impedance is achieved using spectral excitation currents at the corresponding grid connection point, which generate measureable changes in the grid voltage spectra. Different…