There are a number of factors to be considered when linking offshore wind power farms, both when it comes to costs and energy efficiency.
Capital investments, operating costs and transmission losses must be minimized, while at the same time, operational reliability must be assured.
To resolve the complexities of optimization, ABB has a globally deployed team of expert consultants. They have the requisite specialized knowledge of power systems for creating an optimal package for each project.
The team conducts multifaceted computations in determining a wind power farm's optimal internal cabling and grid integration. These include the following factors:
- Load flow
- Short-circuit current
- Flicker and voltage dips
- Lightning strikes and overvoltages
- Grounding systems
Compliance with the grid codes of transmission operators is assured and an optimized system design is developed. Proper design of a wind power farm's cabling systems offers tremendous potential in achieving an optimized configuration.
Similar considerations apply when linking an offshore wind power farm to a national grid. There are two basic alternatives:
- Three-phase AC linkage – For relatively small offshore wind power farms, close to land
- DC linkage – For larger offshore wind power farms and installations, far from the coast