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Investigation of distribution system modification using operation voltage unification in order to decrease

Hadi Norouzi1, Mahdi Golchoob Firoozjaee1, Majid Rezaei1

  • 1Niroo Research Institute, Tehran, Iran.

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|September 19, 2024
PubMed
Summary
This summary is machine-generated.

Reconfiguring medium voltage power distribution systems to 20 kV can enhance resilience against environmental challenges like fine dust. This voltage adjustment aims to reduce faults and speed up equipment replacement, improving overall utility performance.

Keywords:
AhvazDecreasingDistribution systemFailureFine dustInsulationMedium voltage levelUnification

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Area of Science:

  • Electrical Engineering
  • Power Systems Engineering
  • Environmental Engineering

Background:

  • Power network failures often stem from initial equipment design and specifications.
  • Environmental factors, such as fine dust in Iran, necessitate technical adaptations in distribution utilities.
  • Expanding and upgrading existing power infrastructure requires careful planning and robust solutions.

Purpose of the Study:

  • To propose medium voltage level regrading for reducing faults and enabling faster equipment replacement.
  • To investigate voltage level changes for increased network strength and equipment reselection.
  • To redesign critical system sections against fine dust events for an upgraded distribution utility.

Main Methods:

  • Analyzing the operational transition of existing 33 kV and 11 kV networks to a 20 kV level.
  • Conducting a case study on the Ahvaz medium voltage distribution system.
  • Performing calculations for maximum current capacities, insulation and air clearances, mechanical values of poles, and short circuit currents.

Main Results:

  • Assessment of insulation and air clearances under the proposed 20 kV level.
  • Determination of acceptable mechanical values for poles and maximum current capacities for conductors.
  • Evaluation of protection coordination for the new voltage level, including short circuit current analysis.

Conclusions:

  • Medium voltage level regrading to 20 kV offers a viable strategy for enhancing distribution network resilience.
  • The proposed changes improve the system's ability to withstand adverse environmental conditions like fine dust.
  • Voltage level adjustment and equipment reselection are crucial for upgrading distribution utilities and ensuring reliable power supply.