Short-circuit currents calculations in street lighting networks

Armas, J. Hernandez; Ivanov, Aleksandr; Varjas, Toivo

doi:10.1109/rtucon.2017.8124758

Cited by 1 publication

(2 citation statements)

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“…In the presented feasibility studies, the costs of the line renovation options were reduced to one year. This reduction helps to calculate the total cost for different time periods (10,20,30, and 40 years) and at the same time, compare them for different line lengths (100-4000 m). The costs do not consider possible tariff reductions (due to poor service quality), inflation, or overall economic growths.…”

Section: Power Line Renovationmentioning

confidence: 99%

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Analysis of Traditional and Alternative Methods for Solving Voltage Problems in Low Voltage Grids: An Estonian Case Study

et al. 2022

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Smart Cities can benefit from existing municipal low voltage (LV) distribution grids by supporting public services with permanent power supply and providing grid connection points to distributed generators (DG). The increased integration of DGs and inverter based non-linear loads increases voltage quality issues, thus the cost-efficient assurance of voltage quality in LV grids with long radial lines is of increasing importance for the operators of municipal electricity distribution systems. Conventional methods for mitigating voltage quality issues (e.g., power line renovation) might not be optimal solutions either technologically or economically. Existing studies do not address all relevant issues related to the assurance of required voltage quality in such LV grids. This paper provides an overview of the applicability and rationality of traditional as well as alternative methods to solve voltage problems in LV grids. The authors use DIgSILENT PowerFactory software to simulate the performance of voltage stabilisers under different conditions. The authors propose a robust method for the classification of LV feeders and provide recommendations on how to resolve voltage quality problems, with the help of different power quality improvement devices, where the traditional methods of upgrading to medium voltage and grid reinforcement are economically infeasible. Based on our results, recommendations for mitigating voltage quality problems in LV distribution grids with radial lines of different lengths are given.

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Section: Power Line Renovationmentioning

confidence: 99%

“…The authors in [10][11][12] concluded that the use of unbalanced loads and LED-luminaires raises the probability of PQ issues and increases the operation and maintenance costs. The authors in [13] proved with numerical simulations that the stochastic nature of the load can suddenly make the system lose its voltage stability.…”

Section: Conflicts Of Interestmentioning

confidence: 99%