GE’s new interconnection technology to be launched

LAS VEGAS, NEV. (December 11, 2001) – Trans௿½ergie, Hydro-Qu௿½c’s transmission division, will be the first to install GE Power Systems’ new variable-frequency transformer (VFT) technology at its Langlois Station in Qu௿½c. The project will enable Trans௿½ergie to interconnect with other power grids at a lower cost and with less risk than with conventional converter technologies to gain greater transmission network operating flexibility.

The VFT, developed by GE Hydro and GE Energy Consulting, provides a simpler, more efficient and reliable alternative to high voltage direct current (HVDC) converter systems conventionally used to interconnect asynchronous power systems. The VFT also requires less space than HVDC systems. Using this technology, utilities can securely contract additional energy transmission and manage generation/load demand imbalances and peak demand cycles across networks.

As the project’s turnkey contractor, GE will supply all site construction, VFT transformer and balance-of-plant electrical equipment, and installation services at Langlois Station, located in St.-Timoth௿½ southwest of Montr௿½, near the borders of Ontario and New York State. The VFT interconnection will permit the substation to transfer an additional 100 megawatts of power to and from these neighboring power grids. The project is scheduled for commercial operation in May, 2003.

“Trans௿½ergie is pleased to be associated with GE in this pilot project, which will allow the development of a new competitive technology to optimize utilization of existing installations,” said Jacques Regis, president of Trans௿½ergie. “This is one of many Trans௿½ergie efforts to increase the reliability of the power supply to Qu௿½c consumers.”

The VFT system, based on a combination of hydro generator and transformer technologies, consists of a rotary transformer that provides a continuously controllable phase shift for any angle, and a drive system and control that adjust the angle and speed of the rotary transformer to regulate power flow through the VFT. The VFT’s 100-megawatt channels can be combined for up to 400 megawatts in a single installation.

GE Hydro, a division of GE Power Systems, is a world leader in the supply of turbines, generators, and water systems for the hydropower and water control industries.

GE Energy Consulting provides comprehensive power system issues analysis services to help clients worldwide improve their competitive position and add value to their power system holdings.

About Trans௿½ergie

Trans௿½ergie, a division of Hydro-Qu௿½c, has the most extensive transmission system in North America. It carries high-quality power to customers in Qu௿½c, Canada, and the United States. Trans௿½ergie enjoys a worldwide reputation for its expertise, technological leadership and system reliability. It has some 3,200 employees and manages assets of more than C$18.1 billion.

About GE Power Systems

GE Power Systems ( is one of the world’s leading suppliers of power generation technology, energy services and management systems with 2000 revenues of US$15 billion. The business has the largest installed base of power generation equipment in the global energy industry. GE Power Systems provides equipment, services and management solutions across the power generation, oil and gas, distributed power and energy rental industries.

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