16.07.2025 Projects

Major order from Austria

APG relies on MSCDN technology from Maschinenfabrik Reinhausen

Austrian transmission system operator, Austrian Power Grid (APG), is making significant investments in expanding its substations in central Upper Austria to accommodate future grid loads and support the decarbonization efforts of the local steel industry. As part of this effort, four MSCDN systems—each with a capacity of 100 Mvar—will be installed over the next five years. These systems will help meet the reactive power demands associated with the gradual completion of a 220 kV ring connecting the substations at Hütte Süd, Pichling, Kronstorf, Wegscheid, and Ernsthofen. The contract was awarded to the Power Quality division of Maschinenfabrik Reinhausen (MR) in Erfurt.

“We are capable of driving the energy transition,” says Wilfried Breuer, Managing Director at MR. "As a medium-sized global market leader, we are proud to contribute our many years of worldwide experience in regulating electrical load flows to APG through our switched capacitor bank technology. APG is a long-standing and loyal customer of MR on-load tap-changers and continues to place its trust in the high quality of our products and services.”

The specialists at MR Power Quality are responsible for the design, specification, and layout of the components, as well as for conducting studies, primary engineering, procurement, factory acceptance tests, and delivery of the main components, commissioning tests of the MSCDN systems, and customer acceptance tests and service ( ).

As a partner, OMEXOM Umspannwerke GmbH is responsible for construction planning, procuring steel support structures, support insulators, current transformers, and various installation materials. On the construction sites, OMEXOM is responsible for occupational safety and construction site management, as well as for the assembly and installation of the systems.

What do MSCDN systems do?

The primary function of MSCDN systems (Mechanically Switched Capacitor with Damping Network) is to provide reactive power for static voltage control on extra-high voltage transmission lines, as well as fundamental frequency reactive power for stable and safe grid operation. These systems are becoming increasingly essential, as conventional thermal power plants with large generators—which have traditionally regulated voltage by supplying reactive power—are being phased out. With the growing reliance on renewable energy sources such as wind and solar, the reactive power once provided by large-scale power stations must now be replaced. MSCDN systems address this need by being strategically installed at key points within the transmission grid.

 

Maschinenfabrik Reinhausen

Around 50 percent of the electricity consumed worldwide is regulated by products from Maschinenfabrik Reinhausen GmbH. Founded in Regensburg in 1868, the company plays an important role in the transmission and distribution of electrical energy and in the implementation of the energy transition. In addition to products for regulating load flow and voltage quality, MR and its subsidiaries offer solutions for grid stabilization and for testing, monitoring, and repairing critical grid equipment. Customers include energy producers, public and private grid operators, energy-intensive industrial companies, and manufacturers of transformers, switchgear, and high-voltage cables.