Impact analysis of time‐varying voltage‐dependent load models on hybrid DG planning in a radial distribution system using analytical approach

• Published in: IET renewable power generation Vol. 15; no. 1; pp. 153 - 172
• Main Authors: M.L., Merlin Sajini, S., Suja, S., Merlin Gilbert Raj
• Format: Journal Article
• Language: English
• Published: Wiley 01.01.2021
• Subjects: Distributed power generation; Distribution networks; Power system planning and layout
• ISSN: 1752-1416; 1752-1424
• DOI: 10.1049/rpg2.12013

This paper investigates the impact of time‐varying voltage‐dependent load models on hybrid distributed generation planning studies. Firstly, a multi‐objective index is constructed with indices namely real and reactive power loss index, voltage deviation index, and mega‐volt‐ampere capacity index with an objective of reduction of real and reactive power loss, voltage profile improvement, and decreased line loading. The multi‐objective index derived is minimised to locate the distributed generation. Secondly, the analytical expression is obtained to size the distributed generation units with the time‐varying voltage‐dependent load models and probabilistic nature of solar and wind generation. Finally, the impact of load models with the generation effects is separately analysed for PV/wind (hybrid) distributed generation planning. The proposed perspective was validated on the IEEE 33‐bus, IEEE 69‐bus radial distribution network, and a real 16‐bus distribution substation for its effectiveness because the distributed generators are placed in the distribution side of an electrical network. The outcomes reveal that the distributed generation allocation for time‐varying voltage‐dependent load model and probabilistic nature of solar and wind has significant impacts on the distribution system by reducing real and reactive power loss, improving voltage deviation and reduced mega‐volt‐ampere intake.