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Upgrade ordered for 20-year-old HVDC system

An ABB Power Technologies product story
Edited by the Engineeringtalk editorial team Jan 25, 2007

ABB has been selected by the Public Service Company of New Mexico to upgrade the control and the valve cooling systems of an existing ABB HVDC system delivered over 20 years ago.

ABB has been selected by the Public Service Company of New Mexico (PNM), to upgrade the control and the valve cooling systems of an existing ABB HVDC (high voltage direct current) system delivered over 20 years ago.

"New requirements on the energy system, such as integration of wind energy, require additional control features that will be implemented", says Per Haugland, Head of ABB's Grid Systems Business Unit.

The total upgrade will further extend the lifetime of the convertor stations.

A modern dry cooling system will replace the original wet cooling system, thus eliminating the use of scarce water resources.

ABB's Mach 2 system is the world's most used control system for HVDC and FACTS (flexible AC transmission systems) with over 400 systems in operation.

It is used in all types of HVDC installations from small, yet demanding HVDC light installations to large 3000MW power links.

ABB has the broadest experience of upgrades and life extensions in the HVDC industry.

Recent projects include the Square Butte HVDC links and the CU HVDC links in the USA, as well as the Skagerrak 1 and 2 HVDC link between Denmark and Norway.

In the Apollo convertor station in South Africa, upgrades are being made of both valves and control equipment.

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