Cost-Effective Air-Insulated AIS Substation For Industrial And Utility Use

Huixing Zhongdian (Beijing) Electric Co., Ltd. provides reliable 10kV–220kV AIS substation solutions, featuring mature power distribution technology with air serving as the primary insulating medium. AIS substations adopt open-type electrical equipment installed outdoors or semi-outdoors, making them a cost-effective and flexible choice for global power engineering projects.

Core Features

1. Insulation and Layout

• Air insulation design: Safe clearances between live components, earthing parts and adjacent phases are maintained by air and high-voltage insulators, with clearance distances rising proportionally with voltage levels.
• Independent modular layout: Circuit breakers, disconnectors, power transformers and reactive power compensation equipment are arranged in separate units and connected via exposed busbars.
• Fully visible structural design: All electrical connections and equipment operating statuses can be directly observed to enable real-time condition monitoring.
• Dual structural functions: Equipment is mounted on steel or concrete supports, while insulators perform both mechanical fixation and electrical isolation.

2. Key Equipment Configuration

3. Environmental and Site Adaptability

• Large footprint: Required air insulation clearance increases sharply as voltage rises, so AIS substations are most cost-efficient in land-abundant areas.
• Strong environmental adaptability: Outdoor-grade equipment can effectively resist pollution, rain erosion and condensation.
• Superior natural heat dissipation: The open layout prevents heat accumulation inside equipment and lowers the risk of thermal failures.

4. Operation and Maintenance Advantages

• Quick fault diagnosis: Exposed equipment enables fast visual troubleshooting.
• Convenient modular maintenance: Individual pieces of equipment can be repaired independently without disrupting the operation of the entire system.
• Easy routine testing: Conventional tests including insulation resistance tests and dielectric loss tests require no specialized testing devices.

Core Advantages

1. Outstanding Economic Benefits

• Their initial construction investment is 30%–40% lower than that of equivalent GIS substations, and they are particularly cost-effective for projects at 110kV and below.
• Shorter construction period: Simplified civil works and standardized components cut project duration by 30%–50%.
• Ample spare parts availability: High universal compatibility reduces subsequent operation, maintenance and equipment replacement costs.

2. Convenient Daily Operation

• The rational electrical layout leaves sufficient working space for maintenance personnel.
• Rapid fault isolation and maintenance effectively shorten power outage duration and improve power supply reliability.
• High scalability: New feeder bays and reactive power regulation equipment can be added without large-scale reconstruction of existing facilities.

3. Mature Reliability and High Safety

• Decades of field application experience and sophisticated manufacturing technologies guarantee stable performance.
• Sufficient insulation clearances effectively prevent fault propagation and enhance overall system operational safety.
• Eco-friendly design: No SF₆ greenhouse gas is used, which complies with the global trend of energy conservation and carbon reduction.

4. Wide Application Scope

• They are the preferred solution for power construction in rural, mountainous and remote areas with abundant low-cost land resources.
• They suit regions with limited professional maintenance capabilities thanks to their simple operation.
• They are ideal for temporary power supply and transitional power projects due to fast deployment and low upfront investment.

Huixing Zhongdian AIS Substation Overall Solutions

Huixing Zhongdian offers complete turnkey 10kV–220kV AIS substation solutions covering all core equipment and matching substation accessories. All products fully comply with GB and IEC standards, ensuring stable operation under complex working conditions. We provide customized design solutions, prompt delivery and full-lifecycle technical services to meet diverse demands from domestic and overseas power projects.

AIS substations have long been an indispensable part of global power grid infrastructure thanks to their simple structure, low cost and high operational stability. While GIS substations are widely applied in space-constrained urban core areas, AIS substations still dominate in land-sufficient regions and cost-sensitive engineering projects. As your trusted long-term partner, Huixing Zhongdian is dedicated to delivering high-standard integrated AIS substation solutions to ensure safe and stable power distribution across the globe.