The Gouda Wind Park is located north of the town Gouda and 35 km north-east of the town of Malmesbury on the Western Cape in South Africa. The project consists of 46 prefabricated concrete segment wind towers with hub heights of 100 m and a rotor blade diameter of 100 m. Once completed, the new wind park will have a total generating capacity of 138 MW – 3 MW per wind tower. The park is designed for a service life of 20 years.
The project will not only supply the region with renewable energy, but will also contribute to the economic and social development of the country by creating new jobs and supporting several non-profit programs.
DSC Spain supplied and installed prefabricated Wire EX Tendons for tensioning the prefabricated concrete elements inside the wind towers. DSI Germany produced 276 wire tendons for this project.
The tendons consist of 56 wires, each 7 mm Ø, in their free length. Button heads permitting a slip-free anchorage in the base anchors are cold-forged onto the wire ends. In the factory, the tendon ducts were completely filled by pressure injection using a special corrosion protected compound mass in order to ensure long-term protection in aggressive environments. Afterwards, the prefabricated tendons were placed on auxiliary coils and shipped to South Africa in containers.
With the help of six South African technicians, two experienced DSC Spain employees installed the prefabricated tendons inside the wind towers from bottom to top. Thanks to the successful cooperation of this international team, the tendons were installed from bottom to top and tensioned in three wind towers per week.
The Gouda project is only one of many projects in which DSC and ACCIONA Energy S.A. are working together: In addition to five large wind parks in Brazil, a new wind power project using prefabricated Wire EX Tendons is also under construction in north-eastern Mexico.