Middelgrunden Export Cable

Offshore GridOperationalDK40 MW30 kV3.5 km

Basic Information

Also known as:Middelgrunden sea cable, Middelgrunden 30 kV grid connection, Middelgrunden offshore grid connection, Middelgrunden export cable to Amagerværket, Middelgrunden søkabel, Middelgrunden søkabel til Amagerværket

Status:Operational

Capacity:40 MW

Transmission Model:Developer Full

Owners:

HOFOR (formerly Københavns Energi / Copenhagen Energy)(50%)

Middelgrunden Vindmøllelaug (Middelgrunden Cooperative)(50%)

Type:offshore grid

Website:www.middelgrunden.dk

Description:

The Middelgrunden export cable is the circa 3.5 km HVAC export/grid connection linking the 40 MW Middelgrunden offshore wind farm (20 × 2 MW Bonus turbines, commissioned 2000–2001) to the onshore Amager power station (Amagerværket) in Copenhagen. The export link was implemented as two parallel 30 kV submarine PEX cables...

Supply Chain (0)

Project Timeline (0)

No lifecycle events recorded yet.

System Topology

Export

React Flow

Financial

€4.51M

www.umass.edu

CAPEX:€4.51M

Source:www.umass.edu

Notes:

Reported as 'Grid connection, off-shore' in the invested capital table for Middelgrunden (covers the 3.5 km two-parallel 30 kV export cables supplied by NKT Cables).

Cable Specifications

Middelgrunden — Amagerværket export cable system

Amager, Copenhagen, Denmark

2 × 30 kV HVAC · XLPE (Cross-linked Polyethylene) · 20 MVA · 3.5 km

System:2 × 30 kV HVAC

Insulation:XLPE (Cross-linked Polyethylene)

Power rating:20 MVA

Route length:3.5 km(3.5 subsea)

Burial depth:

The export connection was installed as two parallel 30 kV submarine cables from the centre of Middelgrunden to shore. Installation work described in project reports indicates the cables were laid...

Fibre optic:

Each export cable contains embedded fiber-optic cores for turbine control and communications. Project documentation states there are 24 optical fibres in each cable used for control/communication with the turbines and...