The Hollandse Kust Zuid onshore transformer station has been completed and handed over to grid operator TenneT. Volker Energy Solutions (Volker-ES) was responsible for the construction of the 133 kV high voltage substation next to the Euromax terminal at Maasvlakte 2 Rotterdam. From next year, the first 220 kV power from Vattenfall’s offshore wind farm Hollandse Kust Zuid will arrive here and is converted to 380 kV to feed into the existing high-voltage grid at the Maasvlakte 380kV station.
Volker ES was commissioned by client TenneT to realize the complete installation scope for the onshore station. The assignment primarily consisted of the 220 / 380kV switchgear (seven 380 kV fields and four 220 kV fields) and a 33 kV distribution system. Furthermore, the secondary, tertiary and telecom installations had to be made for the control, signaling and power supply.
The primary, secondary and telecom design was provided by TenneT. The network operator had commissioned consultancy and design agency Movares for the detailed engineering of the station. Volker-ES carried out detailed engineering to realize the panels. The entire tertiary scope was designed, built and connected by people from Volker-ES.
Hollandse Kust Zuid Offshore Wind Farm
The onshore station is part of TenneT’s offshore grid connection Hollandse Kust (zuid), which further consists of two offshore high voltage stations stations (OHVS), each with a capacity of 700 MW, and two 220 kV export cables (30-40 km). The offshore construction activities for the wind farm, which will be located approximately 18 kilometers from the coast between The Hague and Zandvoort, will start this summer. The 140 Siemens Gamesa wind turbines with 11 MW capacity are expected to be built starting spring 2022. The entire wind farm should be ready by 2023. Source: Volker Energy Solutions & Vattenfall