2020年2月12日 · The compact and metal-enclosed design of GIS has prominent advantages and better performance than AIS. However, the high initial investment is a key obstacle in expanding the application of GIS. In remote or rural area, industrial areas or in developing countries, AIS is still the best choice .

Generally, AIS is used in substations where locality is very less and free of air pollution. That’s why AIS is used in countryside substations rather than cities. Substation equipment and switchgear installation are less expensive. Installation can be done in no time. The faults are easy to solve in a short time.

2024年5月20日 · The primary difference between AIS substation and GIS substation is that an AIS substation uses the atmospheric air for insulation between live components, while the GIS substation uses the SF 6 gas as the insulation medium between live components.

2022年12月21日 · 敞开式开关设备（Air Insulated Switchgear ）简称AIS，它靠空气和绝缘子使带电部分与地、相与相之间绝缘，其母线裸露，直接与空气接触，断路器可用瓷柱式或罐式，以瓷套作为设备外壳及外绝缘,其特点是外绝缘距离大，占地面积大。 气体绝缘金属封闭开关设备（Gas Insulated Switchgear）简称GIS，是指全部或部分地采用气体（一般采用SF6气体作为绝缘介质）而不采用处于大气压下的空气作为绝缘介质的金属封闭开关设备。 以优质环氧树脂绝缘子 …

2025年2月21日 · While AIS uses air as insulation, GIS uses SF₆ gas in a sealed environment. They each offer unique benefits more suited to different applications. In this article, we assess the primary difference between AIS and GIS substations for five critical aspects.

2023年9月20日 · Air-insulated switchgear (AIS) is a secondary power distribution device and medium voltage switchgear that helps redistribute the power of a primary power distributor powered by a high voltage distribution transformer. AIS controls, protects and isolates electrical equipment in power transmission and distribution systems.

AIS and GIS are two types of systems that are used to manage geographical information. AIS is a stand-alone system that is used to track and store data about individual objects, while GIS is a more comprehensive system that can be used to manage both spatial and non-spatial data.

Unlike gas insulated substations (GIS), Air insulated substations employ atmospheric air as their dielectric gas medium. AIS was the sole option for substation prior to the use of GIS. They are widely used in rural areas and ideal for offsite terrain, where space, weather conditions, seismic events, and environmental issues are not an issue.

2015年9月30日 · GIS high voltage substation engineering uses the gas sulfur hexafluoride for insulation, whereas AIS uses air insulation in a metal-clad system. Sulfur hexafluoride is five times heavier than air and offers excellent extinction behavior.

GIS utilizes sulfur hexafluoride (SF6) for insulation, offering significant advantages in space requirements, maintenance, safety, and lifecycle costs compared to AIS. The analysis shows that while initial costs for GIS are higher, overall lifecycle costs are lower, making GIS a more viable option in urban and challenging terrains.