Estimation of voltage unbalance at an AC traction substation with different train operational scenarios

Kulworawanichpong, Thanatchai; Mingpruk, Nattapong; Ratniyomchai, Tosaphol

doi:10.25046/aj0203138

Cited by 3 publications

(1 citation statement)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An AC traction substation can also cause a voltage unbalance in the distribution system [30]. The VUF is amplified when the train weight and auxiliary power load are increased due to the higher energy consumption.…”

Section: Emerging Causes Of Voltage Unbalancementioning

confidence: 99%

Comprehensive review and a novel technique on voltage unbalance compensation

2023

View full text Add to dashboard Cite

Voltage unbalance has gained more attention due to a rapid increase in single-phase distributed energy resources (DERs) penetration compound with existing unbalance characteristics of low voltage distribution network. The purposes of this article are to summarise various techniques on voltage unbalance compensation from three different strategies: (1) techniques based on passive approach and advanced power electronics; (2) Techniques based on three-phase DERs; (3) techniques based on single-phase DERs. In addition, a novel voltage unbalance compensation technique that applies a voltage sensitivity analysis along with a symmetrical component concept to meet a desired voltage unbalance factor (VUF) is introduced in this article. Coordination among single-phase DERs that contributes in the voltage unbalance compensation is also considered. In order to evaluate the effectiveness of this proposed technique, its results are compared with the results that are obtained using a current unbalance compensation strategy. The results indicate that the novel technique proposed in this study provides more stable voltage unbalance compensation while successfully achieving the specified VUF thresholds. K E Y W O R D Sdistribution networks, electric vehicles, photovoltaic power systems, quality control, reactive power control, renewable energy sources, voltage controlThis is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

show abstract

Section: Emerging Causes Of Voltage Unbalancementioning

confidence: 99%