The influence mechanism of substation transformer on total supply capability (TSC) of distribution networks

Xiao, Jun; Liu, Ruiwan; She, Buxin; He, Guowei; Liang, Ziyu; Cai, Zhongwei

doi:10.1016/j.epsr.2023.110092

Cited by 2 publications

(1 citation statement)

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“…An additional difficulty in implementing appropriate insulation inside transformers (especially of distribution type) is the limited amount of space resulting from the requirements regarding their dimensions, which have to enable the installation of the unit in accordance with their intended use in the power grid. A similar problem concerns transformers installed in windmills, where space for transformers is also very limited [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Impact of Electrode Distance in a Quasi-Uniform Model Electrode System on Lightning Impulse Breakdown Voltage in Various Insulating Liquids

Kunikowski,

Rozga,

Pasternak

et al. 2024

Energies

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This study presents findings on the influence of gap length distance on the lightning impulse breakdown voltage of three dielectric liquids of different chemical origins. The liquids were tested in a model electrode system with a quasi-uniform electric field distribution and a pressboard plate placed on the grounded electrode. The experimental studies were supported using calculations and simulations to show the individual relationships between the lightning impulse breakdown voltage and gap distance, which represent the so-called volume effect of the most stressed liquid. The results of the experiment, which involved four considered gap distances of 2, 4, 6, and 8 mm, show that a dynamic increase in lightning impulse breakdown voltage with an increase in gap distance is associated with mineral oil and bio-based hydrocarbons. However, similar trends were not observed for synthetic ester. Calculations that allowed us to assess the impact of gap length distance on lightning impulse breakdown voltage support the observations from the experimental studies. The curves obtained in this field can be considered in the process of designing insulating systems for transformers.

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Section: Introductionmentioning

confidence: 99%