Browsing by Author "Scheepers, David Johannes Jacobus"
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- ItemHarmonic resonance assessment of renewable energy power plants on the power system using resonant mode analysis(Stellenbosch : Stellenbosch University, 2021-03) Scheepers, David Johannes Jacobus; Beukes, Johan; Stellenbosch University. Faculty of Engineering. Dept. of Electrical and Electronic Engineering.ENGLISH ABSTRACT: Power quality problems and assessment methodologies associated with renewable energy power plants and resonant conditions are investigated.Resonant conditions are introduced by capacitive elements found in typical renewable energy power plant installations,namely the cabling capacitance and the inverter filter capacitors which resonates with inductive elements throughout the power system.A 40MW concentrated photovoltaic power plant serves as a case study. A simplified model of the power plant is developed and compared against a detailed DIg SILENT Power Factory model to validate the results. The Power Factory Python application programming interface is used to construct the Power Factory model’s admittance matrix for analysis.Propagation analyses are performed on the developed simplified models as well as the Power Factory model. Resonant mode analysis is applied to the Power Factory model to calculate the participation factors of various elements connected to specific bus bars. The participation factors indicate which system elements have dominant contributions to the creation of resonant conditions.