ABB commissions switchgear rated at more than 1 million V

Switchgear a key component of safe and reliable ultrahigh-voltage ac transmission.


ABB has commissioned a switchgear rated to handle more than 1 million V (1,100 kV), touching new heights in terms of global voltage levels. The ultrahigh-voltage gas-insulated switchgear (GIS) has a switching capability of 6,900 MW, which means it can turn power equivalent to the average electrical consumption of Switzerland--a country with more than 7 million inhabitants--on or off within milliseconds.

ABB successfully designed, tested, and commissioned the GIS for a pilot project launched in 2006 by State Grid Corporation of China to demonstrate the feasibility of ac power transmission at ultrahigh voltage.

The GIS is a central component of ultrahigh-voltage electricity transmission designed to carry huge amounts of electricity over vast distances with very low losses. ABB completed the assignment in just two years with technology partner Xian Shiky, a leading Chinese switchgear manufacturer who worked in close co-operation with ABB throughout the project.

State Grid has announced plans to invest more than $14 billion in the next three to four years to expand its ultrahigh-voltage network. Ultrahigh-voltage transmission reduces power losses and requires a smaller transmission corridor than conventional technologies. It is particularly suitable for countries like China, where energy resources are often far from the centers of power consumption.

No comments
Consulting-Specifying Engineer's Product of the Year (POY) contest is the premier award for new products in the HVAC, fire, electrical, and...
Consulting-Specifying Engineer magazine is dedicated to encouraging and recognizing the most talented young individuals...
The MEP Giants program lists the top mechanical, electrical, plumbing, and fire protection engineering firms in the United States.
Commissioning lighting control systems; 2016 Commissioning Giants; Design high-efficiency hot water systems for hospitals; Evaluating condensation and condensate
Solving HVAC challenges; Thermal comfort criteria; Liquid-immersion cooling; Specifying VRF systems; 2016 Product of the Year winners
MEP Giants; MEP Annual Report; Mergers and acquisitions; Passive, active fire protection; LED retrofits; HVAC energy efficiency
Driving motor efficiency; Preventing Arc Flash in mission critical facilities; Integrating alternative power and existing electrical systems
Putting COPS into context; Designing medium-voltage electrical systems; Planning and designing resilient, efficient data centers; The nine steps of designing generator fuel systems
Designing generator systems; Using online commissioning tools; Selective coordination best practices
As brand protection manager for Eaton’s Electrical Sector, Tom Grace oversees counterfeit awareness...
Amara Rozgus is chief editor and content manager of Consulting-Specifier Engineer magazine.
IEEE power industry experts bring their combined experience in the electrical power industry...
Michael Heinsdorf, P.E., LEED AP, CDT is an Engineering Specification Writer at ARCOM MasterSpec.
click me