Keywords
symmetric and asymmetric loads
voltage unbalance
power losses
power quality
DigSILENT PowerFactory
synchronous compensator
How to Cite
Abstract
The uneven distribution of loads across phases in low-voltage power supply networks significantly affects the quality of electricity, voltage regimes, and power losses. This article presents a comparative analysis of the influence of symmetrical and asymmetrical loads on the network operating mode in a 0.38 kV electrical network, modeled using the DigSILENT PowerFactory software environment. The obtained results showed that under symmetrical loading conditions, voltage deviations remained within permissible limits, and power losses were recorded at minimal levels (0.3-1.5%). In the asymmetric load mode, however, the phase voltage imbalance exceeded the allowable level, resulting in large currents in the neutral wire and active power losses reaching up to 6.29%. The research findings confirm that balancing loads across phases in low-voltage networks is a crucial factor in improving electricity quality and reducing losses.
References
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