Monday, December 11 2017

VietNamNews

Power from the wind on land and out at sea

Update: July, 23/2017 - 09:00
Wind turbines at the Bạc Liêu Wind Power Plant in the southern province of Bạc Liêu. — VNA/VNS Photo Duy Khương
Viet Nam News

A lot of electricity can be produced by the wind that blows over Việt Nam.

This is not only the wind that blows over the land but also the wind that blows over the sea.

High winds are known to blow out at sea.

When people see Việt Nam’s wind farms out at sea, they will know that they are in Việt Nam’s waters.

HÀ NỘI — Việt Nam has huge potential in terms of geography and wind power resources to generate electricity, experts have said.

The western part of the East Sea bordering southern Việt Nam is one of two areas with an average wind speed at sea of 10-11km per hour, according to research from the Việt Nam Institute of Seas and Islands under the Ministry of Natural Resources and Environment (MONRE).

The water from the central province of Bình Thuận to the southernmost province of Cà Mau – especially the area 300km from the shore – has wind speed of 7-11km per hour on average, making it one of the areas with the highest potential of generating electricity from wind energy in the world, according to research.

At a height of 80 metres from the surface of the East Sea, the extended area in the northeast-southwest direction from the Taiwan Strait to waters off Việt Nam’s southeastern region has power capacity of 600-800W per square metre per year.

Waters off the South Central Coast have power density of 400-700W per square metre, and those off the Gulf of Tonkin have power density of 400-500W per square metre.

Forecasts from wind power experts show that wind power from the country’s sea will continue to increase, alongside wind power from mainland, reaching 100GW and higher by 2030.

Large areas of sea have potential for developing offshore wind power constructions, according to Dr Dư Văn Toán from the Việt Nam Institute of Seas and Islands. He cited the 142,000sq.km sea area in the southern region and the 44,000sq.km sea area from the central province of Bình Thuận to the southernmost province of Cà Mau.

Statistics from 1,500 wind farms in the country (some are in the process of developing further) in the last decade show that the average wind speed of 7-12.5m per second at 100m above sea level generates the most wind power, which is highly effective for consumption and trade.  

Projects exploiting wind power in Việt Nam are developing well, especially two major wind farms in the southern Bạc Liêu Province and southernmost Cà Mau Province, which are expected to generate 1,000 MW of wind power by 2020 and 2025, respectively.  

The wind farms and wind power plants have been contributing to the provinces’ budgets by selling electricity to the Việt Nam Electricity.

For example, the 100 MW Bạc Liêu wind power plant in the southern province of Bạc Liêu has been contributing some VNĐ76 billion (US$3.3 million) per year to the local budget since 2010. It is expected to increase its capacity to 400 MW and contribute some VNĐ300 billion ($13.2 million) per year to the local budget soon.

On January 16 last year, construction the 100MW Khai Long wind power plant began in the southernmost province of Cà Mau. It is expected to generate 300 MW of wind power and some VNĐ200 billion ($8.8 million) per year by 2018.

With this high potential Việt Nam should establish a wind energy development strategy which includes developing wind power construction on the sea, said Dr Dư Văn Toán.

“We will be able to further develop the economy and prevent landslides and land erosion if we know how to utilise wind power resources together with other sources of power such as solar power, wave power, ocean thermal energy conversion, as well as biomass energy, aquaculture and aquatic conservation,” he said.

“On the other hand, offshore wind power constructions not only create new tourism attractions but also help strengthen the protection of national sovereignty on the sea,” he said. — VNS


 

 

GLOSSARY

Việt Nam has huge potential in terms of geography and wind power resources to generate electricity, experts have said.

Potential means possibility.

To generate electricity means to make electricity.

At a height of 80 metres from the surface of the East Sea, the extended area in the northeast-southwest direction from the Taiwan Strait to waters off Việt Nam’s southeastern region has power capacity of 600-800W per square metre per year.

The extended area in the northeast-southwest direction is the largest area that can be described in that direction.

If these waters have power capacity of 600-800W per square metre per year, that is the amount of electricity each square metre is able to produce every year.

Waters off the South Central Coast have power density of 400-700W per square metre, and those off the Gulf of Tonkin have power density of 400-500W per square metre.

Power density is an amount of power measured against volume.

A gulf is a body of water in the sea that is surrounded by land on three sides, rather like a huge bay.

Forecasts from wind power experts show that wind power from the country’s sea will continue to increase, alongside wind power from mainland, reaching 100GW and higher by 2030.

Forecasts are what people say will happen in the future, getting their ideas from studies and calculations.

The mainland is land that is part of a continent and not part of an island.

He cited the 142,000sq.km sea area in the southern region and the 44,000sq.km sea area from the central province of Bình Thuận to the southernmost province of Cà Mau.

Cited means referred to.

Statistics from 1,500 wind farms in the country (some are in the process of developing further) in the last decade show that the average wind speed of 7-12.5m per second at 100m above sea level generates the most wind power, which is highly effective for consumption and trade.  

Statistics are facts that have been worked out from doing lots of careful counting.

A wind farm is a collection of windmills that collect energy from the wind to be turned into electricity.

A decade is a period of ten years.

If something is effective, it works well.

Consumption means being used. In this case it is to do with electricity that is used in Viet Nam rather than traded with other countries.

Projects exploiting wind power in Việt Nam are developing well, especially two major projects wind farms in the southern Bạc Liêu Province and southernmost Cà Mau Province, which are expected to generate 1,000 MW of wind power by 2020 and 2025, respectively.  

Exploiting wind power means making full use of it.

The wind farms and wind power plants have been contributing to the provinces’ budgets by selling electricity to the Việt Nam Electricity.

A province’s budget is its plan on how to spend its money.

“We will be able to further develop the economy and prevent landslides and land erosion if we know how to utilise wind power resources together with other sources of power such as solar power, wave power, ocean thermal energy conversion, as well as biomass energy, aquaculture and aquatic conservation,” he said.

Landslides happen when loose ground suddenly comes tumbling down a hill or a mountain, rather like a once-off waterfall.

Biomass is the weight of all living things in a certain place.

Aquaculture means farming in water, for things such as fish.

Aquatic conservation means keeping a water environment in good shape.

“On the other hand, offshore wind power constructions not only create new tourism attractions but also help strengthen the protection of national sovereignty on the sea,” he said.

Sovereignty means the authority a nation has to rule.

 

WORKSHEET

Find words that mean the following in the Word Search:

  1. A creature that is farmed using aquaculture.
  2.  A word (known as an acronym) that stands for Ministry of Natural Resources and Environment.
  3. A word that describes where in Viet Nam the Province of Cà Mau is situated.
  4. A word that describes a place that is away from the land.
  5. The name of a certain gulf.

 

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© Duncan Guy/Learn the News/ Viet Nam News 2017

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1. Fish; 2. Monre; 3. Southernmost; 4. Offshore; 5. Tonkin.

 

 

 

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