Advantages of Gas-insulated Switchgear

Gas insulated switchgear, commonly referred to as GIS, is a solid metal-enclosed device that contains a variety of high-voltage components, including disconnecting switches and circuit breakers.

These gadgets can be used in a very safe manner in limited areas, such as tight spaces.

The main function of a GIS substation is to switch, separate, transform, measure and distribute electrical energy in the power system.
The main feature of GIS equipment is the use of SF6, an inert gas with excellent insulating properties and chemical and thermal stability.

In contrast, GIS units require only centimeters for effective insulation, whereas air-insulated switchgear requires instrumentation to perform the same function. All of these features make GIS a more reliable device than AIS, with fewer space and maintenance requirements.

 

How GIS Works

Switchgear​ using SF6 protects the power supply and distribution by interrupting the current in the circuit when necessary. Under normal conditions, the circuit breaker contacts are closed, but in the event of a fault in the electrical system, these contacts separate and arc between them . The displacement of the moving contacts is synchronized with the displacement of a valve that allows high voltage SF6 to enter the chamber where the arc is generated. The properties of SF6 allow the absorption of free electrons in the path of the arc, forming ions that do not carry an electrical charge - because they become too heavy. The dielectric strength of the gas increases dramatically, so the arc is extinguished. Because of its ability to compound quickly, the pressure of SF6 decreases as the arc is extinguished, so it is stored in low-pressure tanks and then in high-pressure tanks for reuse.

Because of these properties, SF6 insulation is more effective than air insulation-about three times more effective-that makes these substations ideal for medium- and high-voltage power systems.

 

Advantages of Gas-insulated Switchgear

These devices are ideal for urban or industrial areas where space is small and pollution levels are high.
Thanks to their compact construction, these devices can be more easily integrated into their environment without affecting the aesthetics of the place.
High reliability, as these devices are not subject to environmental damage - they are also less sensitive to earthquakes.
No risk of electrical failures due to flying animals.
This switchgear has different configurations for different types of busbars (switching, double, ring, etc.).
There is no risk of oil leakage or explosion due to fire.
They are easy to maintain devices, since most of the maintenance consists in checking that they are working properly.
Installation is simpler.
The units run quietly.
Lower operating costs.
Some models use their metal covers to counteract external electromagnetic interference.

评论

发表评论

此博客中的热门博文

Heat Pumps for Domestic Hot Water: A Sustainable Solution

图片
 In the pursuit of sustainable and energy-efficient technologies,  Domestic Hot Water Heat Pump  have emerged as versatile systems with the potential to revolutionize the way we heat our homes. While they are commonly associated with space heating and cooling, one question arises: Can heat pumps be effectively utilized for domestic hot water as well?  Most homeowners who have heat pumps use them to heat and cool their homes. But a heat pump also can be used to heat water -- either as stand-alone water heating system, or as combination water heating and space conditioning system. Understanding Heat Pumps Before delving into their application for domestic hot water, it's essential to grasp the fundamentals of how heat pumps operate. Heat pumps work by transferring heat from one location to another, making use of a refrigerant and a cycle of evaporation and condensation. This process enables them to extract heat from the air, ground, or water, and then deliver it to the...
阅读全文

High-Pressure Slurry Pump Explained

图片
  Welcome to the world of   high pressure slurry pump , where power meets precision. In this article, we delve into the intricacies of these robust machines, exploring their applications, benefits, and everything in between. If you're navigating the landscape of pumping solutions, this guide is your compass. High-Pressure Slurry Pump Explained What is a High-Pressure Slurry Pump? Embark on a journey to understand the core functionality of high-pressure slurry pumps. These mechanical marvels are designed to handle abrasive slurries with ease, making them indispensable in various industries. Applications Across Industries Explore the diverse applications of  slurry pumps , from mining operations to wastewater treatment plants. Their versatility and reliability make them a go-to solution in challenging environments. The Inner Workings Delve into the intricate details of how high-pressure slurry pumps operate. Understanding their mechanisms sheds light on why they are the pre...
阅读全文

Advantages of Using an Automatic Leather Cutting Machine in Car Mat Manufacturing

图片
  In the ever-evolving landscape of manufacturing, precision and efficiency are paramount. When it comes to crafting car mats, the use of cutting-edge technology can make all the difference. One such technological marvel that has revolutionized the car mat manufacturing industry is the   Automatic Leather Cutting Machine ​. In this article, we delve into the manifold advantages of incorporating this state-of-the-art equipment into your production process. Enhanced Precision and Accuracy When it comes to manufacturing car mats, precision is non-negotiable. Each car mat needs to fit seamlessly into the designated vehicle model, ensuring a snug and tailored appearance. Automatic Leather Cutting Machines excel in this aspect, offering a level of precision that is unmatched by traditional cutting methods. These machines utilize advanced software and laser-guided technology to cut leather with extraordinary accuracy. Whether it's intricate patterns or complex designs, the Autom...
阅读全文