Abstract:
The power system loads are often modelled by ag-gregated load models, which describe the voltage characteristics of the bus loads. The bus loads may include distributed g...Show MoreMetadata
Abstract:
The power system loads are often modelled by ag-gregated load models, which describe the voltage characteristics of the bus loads. The bus loads may include distributed generation (DG) units, which affect the apparent load behaviour. In power systems with decreasing amount of dispatchable generation, the voltage characteristics of aggregated loads have raised interest as a source of load flexibility in the context of Conservation Voltage Reduction (CVR). The available CVR potential is often assessed based on the static load models of the bus loads. In this paper, equations for evaluating the impact of DG on the exponential model of an aggregated load are presented. It is also discussed based on numerical examples, how the two calculation methods behave at high penetration level of DG. The results indicate that the methods provide similar results at over 80% penetration level of DG (if the load has resistive characteristic). Above that level the numerical results disembark. In addition, it is shown how the operation point of calculation affects the calculation results of the methods.
Published in: 2021 IEEE 62nd International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)
Date of Conference: 15-17 November 2021
Date Added to IEEE Xplore: 18 February 2022
ISBN Information: