UK’s JDR Wins Order For 100km of 66kv Array Cable

JDR UK Wins Order For 66 Kv Array Cable

UK-based subsea cable service provider JDR has recently been awarded a contract by Seaway 7 ASA to supply 66kV subsea array cables for the EnBW He Dreiht offshore wind farm in Germany.

JDR will supply 100km of 66kV array cable to connect 64 wind turbines at the 900MW offshore wind farm. JDR draws on its strong technical capabilities and extensive offshore experience to provide cable products and services for up to 50 offshore wind projects.

The EnBW He Dreiht offshore wind farm is located in the exclusive economic zone of the German North Sea, about 85 km north of the island of Borkum. The wind farm is currently one of the largest energy transition projects in Europe and will also be the first to use turbines with a capacity of 15 MW each. The project is scheduled to be operational in 2025.

The array cables will be manufactured at JDR’s state-of-the-art facility in Hartlepool, UK, and then installed into the project in 2025.

So what is offshore wind power? Before you understand ZMS cable editor first take you to understand wind power.

Wind power refers to wind power generation, which is the conversion of the kinetic energy of the wind into electricity.

cable wind power projects

What Is Wind Energy?

Wind energy is clean and renewable energy, with more and more attention from countries around the world. Its amount is huge, the global wind energy is about 2.74×10^9MW, of which the available wind energy is 2×10^7MW, which is 10 times greater than the total amount of water energy available on earth.

China is rich in wind energy resources, the wind energy reserves can be exploited about 1 billion kW, of which, the wind energy reserves on the land are about 253 million kW, and the sea can be developed and used about 750 million kW of wind energy reserves, a total of 1 billion kW. and the end of 2003, the national power installed about 567 million kW.

The wind is one of the energy sources without public hazards. And it is inexhaustible. For the coastal islands, grassland pastoral areas, mountainous areas, and plateau areas where water, fuel, and transportation are scarce, it is very suitable and promising to use wind power generation according to local conditions.

The wind is a new energy source with great potential. In the early eighteenth century, wind power generation charted a violent gale that swept across England and France. It destroyed four hundred windmills, eight hundred houses, one hundred churches, and more than four hundred sailing ships, injured thousands of people, and uprooted two hundred and fifty thousand trees.

In the case of tree uprooting alone, the wind generated 10 million horsepower (or 7.5 million kilowatts) in a matter of seconds. It has been estimated that there are about 10 billion kilowatts of wind power available on the planet, almost 10 times the amount of hydroelectric power generated worldwide today.

At present, the annual energy obtained by burning coal worldwide is only one-third of the energy provided by wind power in one year. Therefore, both domestic and foreign countries attach great importance to the use of wind power to generate electricity and develop new energy sources.

Attempts to use wind power to generate electricity began as early as the early twentieth century. In the thirties, Denmark, Sweden, the Soviet Union, and the United States applied the rotor blade technology of the aviation industry to successfully develop some small wind power generation devices.

This small wind turbine is widely used in windy islands and remote villages. The cost of electricity it obtains is much lower than that of small internal combustion engines. However, the power generation capacity at that time was low, mostly below 5 kW.

At present, it is known that foreign countries have produced 15, 40, 45, 100, and 225 kW wind turbines on the grasslands of Inner Mongolia.

DC waterproof cable


Converting the kinetic energy of wind into mechanical kinetic energy, and then converting mechanical energy into electric kinetic energy is wind power generation. The principle of wind power generation is to use the wind to drive the windmill blades to rotate, and then increase the speed of rotation through the speed increase to promote the generator to generate electricity.

According to the current windmill technology, a breeze speed of about three meters per second is enough to start generating electricity. Wind power is a boom in the world because it does not require fuel and does not produce radiation or air pollution.

The device needed to generate electricity from wind power is called a wind turbine. This wind turbine can be broadly divided into three parts: the wind turbine including the rudder, the generator, and the tower. Large wind turbines do not have a rudder, and generally, only small ones have a rudder.

Wind Power Output

The output of the wind turbine is 13~25V alternating current because of the unstable wind volume, which must be rectified by the charger and then charged to the battery so that the electrical energy generated by the wind turbine becomes chemical energy. Then the inverter power supply with a protection circuit is used to convert the chemical energy in the battery into AC 220V mains power to ensure stable use.


Although there are various types of wind turbines, they can be summarized into two categories.

1. Horizontal axis wind turbines, where the rotation axis of the wind wheel is parallel to the wind direction.

2. Vertical axis wind turbines, where the rotation axis of the wind wheel is perpendicular to the ground or the direction of airflow.

power cable for offshore wind power

Wind Energy Market

With the development of the global economy, the wind energy market has also developed rapidly. Since 2004, global wind power capacity has doubled, and between 2006 and 2007, global installed wind power capacity expanded by 27%. 90,000 MW was available in 2007, and this figure will be 160,000 MW by 2010.

The world wind energy market is expected to grow by 25% annually over the next 20-25 years. With technological advances and the development of the environmental protection business, wind power generation will be fully competitive with coal-fired power generation in commercial terms.

In summary, offshore wind power refers to wind turbines in the sea rather than land open space, using the wind of the sea breeze, to achieve the effect of power generation, but also to occupy a certain advantage.

The Advantages of Offshore Wind Power Generation

1. Abundant resources

2. High utilization hours of power generation

3. Large capacity of a single machine

4. Does not occupy land

5. Does not consume water resources

6. Suitable for large-scale development

The above is the introduction of wind power and offshore wind power generation, as long as the electricity-related is certainly inseparable from the wire and cable. ZMS cable manufacturer has been concerned about the development of cable, always adhering to providing high-quality cable, good value for money, considerate service, the product after a strict manual qualification audit, trustworthy.

—ZMS Cable Group