Converter Stations will be constructed near the existing substations in Port Angeles and View Royal to enable the transfer of energy between the DC cable and the existing AC grids.  These converter stations require a relatively small area and are easily modifiable to be visually compatible with their surroundings.

The converter station building size is approximately 30 x 75 metres (100 x 250 feet) and the overall lot size on which it is located is roughly 110 x 150 metres (360 x 490 feet).  Most of the HVDC Light® equipment would be contained in the building.

Technology

A typical converter station occupies an area of less than 1800 square metres and consists of: two containers for the converters and the control system, three small AC air-core reactors, a simple harmonics filter and some cooling fans. The converter station would use Insulated Gate Bipolar Transistors (IGBTs), which are virtually maintenance free.

Advantages of IGBTs:

• Minimal maintenance
• Highly automated and can be operated remotely
• Converter station can automatically regulate voltage to stabilize the grid

Environmental and aesthetic considerations

Noise: The converter station would emit minimal noise.  At a minimum, the station would meet local code requirements for noise. Our technical partners, ABB Inc., have experience in designing converter stations to include features that minimize noise.

Construction: Construction would take place during daytime hours to reduce noise impacts, and would last approximately 7 months. 

Safety and Security: The converter station site would be fenced and secured during construction and operation. Geotechnical and seismic studies would provide design criteria to meet structural and earthquake standards.

Design: Converter stations can be designed to fit into their surroundings, incorporating features consistent with existing structures in the area.

Sea Breeze Pacific could work with architects and local residents to develop the design.