Commissioned by grid operator Amprion, Siemens built two reactive power compensation systems for the important Kriftel power grid node: a mechanically switched capacitor with damping network (MSCDN) and a power-electronic static synchronous compensator (STATCOM).

The systems have been running successfully in test operation since December 2018. They’re able to dynamically, rapidly, and flexibly increase or decrease the grid voltage on demand, which is necessary to keep the grid stable despite the increase in fluctuating power supplies from renewable and distributed energy sources. At the same time, the system will help prevent gaps in supply due to large power plant shutdowns.

The Kriftel substation between Frankfurt and Wiesbaden controls power distribution for the Greater Frankfurt Area and its almost six million inhabitants.

“We’re pleased with the successful test operation of what is so far Europe’s most powerful SVC PLUS system, which we’ve supplied to our customer on a turnkey basis,” says Mirko Düsel, CEO of the Transmission Solutions Business Unit in the Siemens Energy Management Division.

Source: Siemens