Gas Insulated Switchyards


Gas Insulated Switchyards are systems that convert high voltage to low voltage or reverse form with power transformers and auxiliary devices. In addition, these switchyards are the points where energy is collected, transmitted and distributed. The high voltage transformer is designed in two different ways. These; AIS (AirInsulated Substation), ie air circulation air exchange, is currently transformer center with open switchyard. The other is GIS (GasInsulated Substation), that is, open and closed transformer substations. Gas Insulated Switchyards (GIS) are designed with new technologies insulated with SF6 gas, metal covered and well preserved. In this way, it is the safest and most optimal solution compared to other transformer centers. Breakers, disconnectors, HV conductors, current-voltage transformers, metal enclosures SF6 gas "location description" In these systems, if maintenance repairs are made, the operating life of the facility is much longer than other switchgear. It is frequently preferred due to its low maintenance and fast installation.

In short, SF6 (Sulfur Hexafluoride) gas;

SF6 gas (Sulfur Hexafluoride) is a colorless substance with high dielectric strength, odorless and non-flammable. SF6 gas is used in the energy sector due to its high arc extinguishing and heat absorption.

Gas Insulated Switchyards Usage Areas

  • Mountainous Regions
  • Industrial Facilities
  • City Centers
  • Underground Power Plants
With its expert engineering staff, YEO successfully carries out Gas Insulated Switchgear (GIS) projects with the highest quality and efficiency.

Gas Insulated Switchgear (GIS) Advantages

Gas Insulated Switchgear (GIS), which has a high level of insulation, is more preferred because it is 10 times smaller than Air Insulated Switchyards (AIS). Gas Insulated Switchyards (GIS) is a system that has been used for a long time and is available up to 12 kV - 800 kV systems. SF6 gas pressure used for insulation purposes is generally kept below 2.5 bar. It varies from 5 bars to 7 bars while cutting. Gas Insulated Switchyards (GIS), which vary according to their structural features, are available in switching types.
  1. Insulated Phase GIS
  2. 3 Phase Integrated GIS
  3. Hybrid GIS System
  4. Compact GIS
  5. Highly Integrated System