Alstom has secured a contract from German transmission grid operator TenneT TSO to provide a 300MVAr mechanically switched capacitor with damping network (MSCDN) to improve efficiency and voltage stability at the Karben electrical substation on the Frankfurt am Main network.

Network operators are being called on to provide cleaner electricity, in the context of Germany’s energy turnaround, through a major integration of both renewable and decentralised power sources.

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With this contract, TenneT will install its sixth MSCDN system manufactured by Alstom.

MSCDN system is a turnkey reactive power compensation system that enhances power quality and assists in raising transmission capacity.

The technology offers TenneT access to a constant and high-quality supply of "switchable" reactive power.

MSCDN’s flexibility has the ability to support voltage levels when capacity is high, and simply be turned off when capacity is low.

Filter function of the system would significantly reduce any voltage harmonics, or oscillations.

"The technology offers TenneT access to a constant and high-quality supply of "switchable" reactive power."

Optimised use of reactive power decreases energy losses while this helps in reduction of both costs and carbon emissions.

Additionally, improved line capacity makes it possible to transport more electrical power throughout the decentralised grid.

Alstom Grid team leader for power electronics activities Jan-Hendrik von Auer said that the company has expanded its long-term cooperation with TenneT in 2006 to include MSCDNs.

"With today’s order, TenneT once again reaffirms its trust in Alstom’s expertise and outstanding service," Auer said.

Image: Alstom to to support German energy turnaround. Photo: courtesy of Alstom.