Offshore Substation Design

Binhai South H3

Binhai South H3 Offshore Substation Stands
300MW wind farm project located in the Yellow Sea, off the east China coast
Location: Yellow Sea, China
Operator: PowerChina Huadong Engineering (HDEC)
Duration: 2017
Scope: Structural concept and detailed design, structural analysis, fatigue, ship impact, redundancy and on-bottom stability analyses for the jacket substructure

Kent completed the concept design, detailed design and follow-on support of the offshore substation platform for HDEC’s Binhai South H3 300MW wind farm project. The OSS (Offshore Substation) location is in the Yellow Sea, off the east China coast with a water depth of 16.2m, w.r.t. LAT. The substation consists of a steel topside installed on a piled jacket foundation.

The OSS functional requirements are as follows:

  • Equipment for high voltage transmission and distribution and other facilities such as diesel generator, batteries and panels for wind turbine control;
  • Controlled and monitored remotely from onshore control station;
  • Manned during service and repair work only;
  • Emergency shelter and welfare facilities for a maximum of 8 persons;
  • Primary access will be by Crew Transfer Vessel (CTV).

The topside is built up as a multi-storey steel structure with five deck levels including the Roof Deck. In-depth analysis led to creation of a detailed, comprehensive design. The design is robust and optimized to maximize human safety.

SERVICES PROVIDED:

  • Structural concept and detailed design to IFC (Issued for Client comment) of both the topsides and jacket.
  • Structural analyses including in-place, transportation, seismic and lift analyses for topsides and jacket.
  • Fatigue, ship impact, redundancy and on-bottom stability analyses for the jacket substructure
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