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China Xinhua News‏ @XHNews 4h4 hours ago
A new world record! The ±1100 kv Changji-Guquan UHVDC (ultra-high voltage direct current) transmission link in E China's Anhui will set a world record in terms of voltage level, transmission capacity and distance which is expected to be finished within 2018

Changji-Guquan transmission link to be finished within 2018
Source: Xinhua| 2018-02-06 21:48:25|Editor: pengying


Aerial photo taken on Feb. 6, 2018 shows the construction at the south bank of the Yangtze River of the Changji-Guquan UHVDC (ultra-high voltage direct current) transmission link in Digang Town under Fanchang County, east China's Anhui Province. The ±1100 kv Changji-Guquan transmission link will set a world record in terms of voltage level, transmission capacity and distance. The link is expected to be finished within 2018 with the installation capacity of 12,000 megawatts. (Xinhua/Guo Chen)

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People's Daily, China‏ Verified account @PDChina
State Grid Corporation of China’s Changji-Guquan 1100kV UHVDC power link started power transmitting from NW China's Xinjiang to E China's Anhui, setting a new world record in terms of voltage level (1,100kV), transmission capacity (12million kilowatts) and distance (3,293km).

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Helicopter connects cables to world's tallest power pylon in Zhejiang
China Plus Published: 2018-11-10 20:09:05

A helicopter crossing the sea as part of work to connect the cables for the world's tallest power pylon. The construction of the giant pylon was completed in August. It is four times the height of London's Big Ben, breaking the world record for the tallest power pylon. [Xinhua]

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World's highest power supply pylons complete cable construction in Zhoushan, E China's Zhejiang
Source: Xinhua| 2019-01-03 21:41:21|Editor: Liangyu


Aerial photo taken on Jan. 3, 2019 shows one of the giant power supply pylons in Zhoushan, east China's Zhejiang Province. The two 380-meter-tall pylons carry power cables between Zhoushan's Jintang and Cezi islands, a distance of 2,656 meters. The new pylon project is a part of a new ultra-high voltage power line project between cities of Zhoushan and Ningbo. (Xinhua/Xu Yu)

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World's highest power supply pylons complete cable construction in Zhoushan, E China's Zhejiang
Source: Xinhua| 2019-01-03 21:41:21|Editor: Liangyu


Aerial photo taken on Jan. 3, 2019 shows one of the giant power supply pylons in Zhoushan, east China's Zhejiang Province. The two 380-meter-tall pylons carry power cables between Zhoushan's Jintang and Cezi islands, a distance of 2,656 meters. The new pylon project is a part of a new ultra-high voltage power line project between cities of Zhoushan and Ningbo. (Xinhua/Xu Yu)

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Some more images from the world's highest power supply pylons:









World's highest power supply pylons complete cable construction
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10 Jan 2019 | 17:00 GMT
China’s State Grid Corp Crushes Power Transmission Records - IEEE Spectrum
State Grid's 1.1 million volt DC line pushes power from Xinjiang to eastern megacities over 3000 kilometers to the east

By Peter Fairley

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Photo: TBEA
China's TBEA set up manufacturing in Xinjiang to ease delivery of the giant transformers State Grid required, seen here.


China’s primary grid operator has energized its biggest and most powerful line yet, a 1.1-million-volt direct current (DC) behemoth that crushes world records for voltage, distance and power.

The new ultra-high voltage DC (UHVDC) line built by Beijing-based State Grid Corporation of China can transmit up to 12 gigawatts. That is enough to power 50 million Chinese households, according to a statement issued in Chinese by State Grid last week, and 50 percent more than most of the 800-kilovolt UHVDC lines that State Grid has built over the past decade.

The new 1100-kv UHVDC line absorbs the grid’s alternating current at an AC/DC converter station near the capitol of Xinjiang—China's vast northwestern territory—and sends DC power to a second converter station in Anhui province in eastern China. That 3,293 kilometer run extends power transmission’s distance record by over 900 kms.

State Grid dubs it the “Power Silk Road” in its statement because it follows the eponymous ancient route’s path through northwest China’s Hexi Corridor and can replace the equivalent of 25,000 coal trains’ worth of coal-fired generation in China’s heavily polluted eastern cities. In addition to battling air pollution, it could also deliver a hefty reduction in greenhouse gas emissions if State Grid prioritizes export of the northwest’s abundant solar and wind power.

Jin Zhang, a senior engineer and deputy division head in State Grid’s DC transmission project department, told IEEE Spectrum during interviews in Beijing last year that State Grid began developing 1100-kv UHVDC technology more than a decade ago. They recognized, he said, that China would need to transfer power farther over distances that would incur large losses on 800-kv lines.

Early risk-benefit studies identified 1100-kv as the optimal next step, said Zhang, in part because of the big AC transformers that mediate between the converter stations and the surrounding AC grids. Installing a smaller number of large transformers is most cost-effective, he said, but for a 1200-kv converter station such transformers might be impossible to deliver from factories.

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Photo: TBEA
TBEA's transformer prepped to hit the road in Xinjiang in June 2018.


The transformers at State Grid’s newly-energized 1100-kv converter stations are movable, but they are hardly small. Zurich-based ABB, which provided some of the new line’s components along with Munich-based Siemens and a number of Chinese suppliers, says transformers it built for State Grid’s project weigh 800 metric tons, and stretch to 32 meters in length. One of State Grid’s domestic suppliers, TBEA, set up UHV transformer manufacturing in Xinjiang to minimize transport costs.

Supersizing was also required for other 1100-kv components, such as power lines and transmission towers, to manage the system’s unprecedented electromagnetic fields. Magnus Callavik, general manager of Beijing-based ABB Sifang Power System Co., a joint venture that provided one set of AC/DC converters for the new line, says the 300-kv jump from 800-kv required a “completely new” design.

“It sounds like you’re only adding an incremental part,” Callavik said. “But it’s very challenging for insulation design, structure and weight of the whole design, [plus] system aspects such as how you integrate with the transformer and other systems.”

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Photo: ABB
Bushings to safely convey 12 gigawatts of DC power through walls at the world's first 1100-kv converter stations.


Zhang pointed to the bushings that carry DC power between each station’s electronic converters, housed indoors, and the UHVDC transmission lines outside. The bushings keep electricity from flashing over to the converter halls’ walls. With the step up from 800-kV, Zhang said they grew by half a meter to roughly 1.3 meters in diameter and from under 20 meters in length to over 30 meters. “Higher voltage means higher impulse levels, mainly during switching. So we need longer air clearances,” said Zhang.

UHVDC technology is seen by Chinese president Xi Jinping as a key technology for his “Belt and Road” international development program. And at the UN’s 2015 Sustainable Development Summit Xi proposed the construction of intercontinental power links to massively scale-up cross-border sharing of renewable energy.

But UHVDC also has an important role to play domestically, where Xi has promised to turn China’s skies blue again. Specifically, Xi has committed to ending rampant wastage of renewable power generation, whereby wind, solar and hydro power plants are deliberately shut off due to grid capacity and stability limits or to simply make room for coal-fired generation.

State Grid’s new 1100-kv line could help reduce renewable energy curtailment because Xinjiang’s wind and solar power plants are among China’s largest and also the country’s most heavily curtailed. More than one-fifth of Xinjiang’s solar generating potential and one-quarter of its wind power was squandered in 2017, according to Chinese government statistics. Sending that power to eastern China instead of wasting it would help State Grid meet Xi’s promise to shrink curtailment to less than 5 percent in all regions by 2020.

State Grid is working hard to meet that goal, according to Zhang. While 13-gigawatts of new coal power generation was planned along with State Grid’s 1100-kv UHVDC project, Zhang told Spectrum that many of the anticipated plants were cancelled. “At least more than half will be renewable power,” he said of the power exports the new line will carry.

One more question hangs over the impact of State Grid’s 1100-kv technology: whether its massive power flows can be safely integrated with China’s congested eastern grids. Challenges associated with absorbing power injected by big DC lines led to the break-up of China’s southern grid in 2016. State Grid is counting on another major UHV innovation — its growing network of 1000-kv AC lines — to solve that problem.
 
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China builds world's longest 220kV AC submarine power cable
By Gong Zhe
2019-01-17 10:15 GMT+8

Electrical power systems are the backbone of modern life. But how does one "empower" remote islands?

One obvious answer remains "submarine power cables" also known as "sea power cables." These are transmission cables that carry electric power below the surface of the water.

However, developing a long-distance submarine power cable system could be extremely tricky.

China, which is home to some of the most exotic islands in the world, is making significant progress in electrifying its nature-rich islands.

Chinese engineers have recently built a 27-kilometer-long 200kV AC undersea power cable to connect the Chinese mainland to an offshore wind farm in Dalian City, northeast China's Liaoning Province.

The cable has no joints between terminations and can work problem-free even after lying on the seabed for decades.

"In a factory, we have to monitor the cable output for 25 days non-stop," said Li Ziwei, the manager the cable's production unit.

If anything goes wrong during the 25-day process, the engineers need to start all over again from the beginning. So, this work requires extreme caution.

"We achieved this after years of progress in technology," Li told CCTV.

It's the world's longest cable of its kind and has passed several levels of examination. Now, it's waiting to be put into actual use.

In December 2018, a 17-kilometer-long 500kV submarine cable was laid to electrify an island in Zhoushan City, east China's Zhejiang Province.
 
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JANUARY 18, 2019 / 10:18 AM / UPDATED 2 HOURS AGO
China's CNOOC to double proven reserves, exploration projects by 2025

BEIJING (Reuters) - China’s CNOOC Group said it aims to double its exploration projects and proven oil and gas reserves in seven years, the company said on Friday via its official Wechat account.

The announcement was a direct response to President Xi Jinping’s call to improve the country’s national security by boosting domestic production and reserves, CNOOC said in the post.

The offshore producer is expected to make a record investment to boost exploration projects and reach its target, according to CNOOC’s chairman Yang Hua.

The company is due to release details of its production target and capital expenditure at the strategic outlook meeting on Jan. 23.

“We faced adverse geological conditions as offshore oil and gas fields age. More exploration projects are being moved to deep water area, but these are both risky and costly,” said Xie Yuhong, head geologist, CNOOC, adding that the volatility in global oil prices added pressure on CNOOC to rein in expenses.

The oil and gas explorer reported 2.613 billion barrels of oil equivalent in net total reserves by 2017-end, the best level seen since 2008.

Reporting by Meng Meng and Beijing Newsroom, Editing by Sherry Jacob-Phillips

China's CNOOC to double proven reserves, exploration projects by 2025 | Reuters
 
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Is China’s plan to use a nuclear bomb detonator to release shale gas in earthquake-prone Sichuan crazy or brilliant? | South China Morning Post
  • Scientists have developed an ‘energy rod’ that can fire multiple shock waves to frack sedimentary rock at depths of up to 3.5km
  • China has the world’s largest reserves of natural gas but current mining technology makes most of it inaccessible
PUBLISHED : Sunday, 27 January, 2019, 12:00am
UPDATED : Sunday, 27 January, 2019, 12:00am

Stephen Chen

China is planning to apply the same technology used to detonate a nuclear bomb over Hiroshima during the second world war to access its massive shale gas reserves in Sichuan province. While success would mean a giant leap forward not only for the industry but also Beijing’s energy self-sufficiency ambitions, some observers are concerned about the potential risk of widespread drilling for the fuel in a region known for its devastating earthquakes.

Despite being home to the largest reserves of shale gas on the planet – about 31.6 trillion cubic metres according to 2015 figures from the US Energy Information Administration, or twice as much as the United States and Australia combined – China is the world’s biggest importer of natural gas, with about 40 per cent of its annual requirement coming from overseas.

In 2017, it produced just 6 billion cubic metres of shale gas, or about 6 per cent of its natural gas output for the whole year.

The problem is that 80 per cent of its deposits are located more than 3,500 metres (11,500 feet) below sea level, which is far beyond the range of hydraulic fracturing, the standard method for extraction.

But all that could be about to change, after a team of nuclear weapons scientists led by Professor Zhang Yongming from the State Key Laboratory of Controlled Shock Waves at Xian Jiaotong University in Shaanxi province, released details of a new “energy rod” that has the power to plumb depths never before thought possible.

Unlike hydraulic fracturing, or fracking as it is more commonly known, which uses highly pressurised jets of water to release gas deposits trapped in sedimentary rock, Zhang’s torpedo-shaped device uses a powerful electric current to generate concentrated, precisely controlled shock waves to achieve the same result.

He told the South China Morning Post that while the technology had yet to be applied outside the laboratory, the first field test was set to take place in Sichuan in March or April.

“We are about to see the result of a decade’s work,” he said.

Chen Jun, a professor at Southwest Petroleum University in Chengdu, Sichuan’s capital, is not involved with the programme but said he was eagerly awaiting the results of the trials.

“A technological breakthrough could trigger another shale gas revolution,” he said.

Shale gas is another name for methane (or natural gas) that is trapped in impermeable rock deep underground. Unlike conventional natural gas which is in permeable rocks, shale gas does not flow and so cannot be reached by simply drilling a well.

The widespread use of fracking in the United States began in 2007 and heralded a boom in energy production in the country. In the decade that followed its natural gas output rose 40 per cent, prices fell by more than two thirds and America went from importer to exporter.

One of the main reasons for the success of the so called shale gas revolution was the relative accessibility of the fuel. In many cases, including at several sites in Pennsylvania and New York state, the deposits were found just a few hundred metres below ground.

The deeper the shale beds, the higher the water pressure needed to frack the rock and release the gas. Reaching China’s reserves, at 3.5km (2.2 miles) underground, would require a water pressure of about 100 megapascals, or about the same as is found at the bottom of the Mariana Trench in the Pacific Ocean, the deepest point on Earth.

No pump, pipe or drill shaft wall material has the strength to withstand such a crush.

No surprise then that previous efforts to tap into China’s rich gas seams by state-owned energy giants like Sinopec and CNPC, often working in partnership with US firms, failed to deliver.

Zhang hopes his alternative, developed by a team that has worked on some of the world’s most advanced nuclear weapons systems, can change all that, but he also knows the proof of the pudding is in the eating.

“The technology was born in a dust-free laboratory,” he said. “Not many people believe it can be used in a mine.”

Zhang and his team have dubbed their creation an “energy concentration rod” as it is able to control the release of explosive bolts of energy into an extremely short, precisely calculated period of time so as to maximise the fracturing effect of the shock waves.

It works by passing a strong electric current along a specially coated wire coil – encased by a metal shell – that is submerged in water. When the wire vaporises it produces a cloud of plasma – the extremely hot, electrically charged matter that makes up the sun – within which is a huge amount of energy just waiting to be released.

“The shock wave generated by the device can be as high as 200 megapascals at close range, which is expected to produce a fracture zone up to 50 metres in diameter,” Zhang said.



The method, known as exploding wire, enables scientists to control the energy, duration and even direction of the explosion. The same principle was used to detonate the atomic bomb code named “Little Boy” that was dropped on Hiroshima in 1945.

Despite that commonality, Zhang’s device does not create a nuclear blast, so is fundamentally different to what the United States was doing in the 1960s, when scientists there detonated a nuclear bomb underground to boost natural gas production. The former Soviet Union also used thermal nuclear weapons for mining and in dam construction.

Also, unlike a traditional detonator, which fires just once, Zhang’s energy rod has been designed to withstand hundreds of massive blasts.

After each one, the rod is hoisted back up the shaft and a jet of water is injected under high pressure into the cavity to further open up the rock. The rod is then lowered back into position and is ready to fire again.

The device can “generate shock waves repeatedly … like a machine gun”, Zhang said, adding that because the wire was encased and submerged the rod did not generate sparks, so reducing the safety risk.

While the scientist has concerns about how well his creation will work in shale rock, it has already been used to release potentially hazardous gas deposits from coal beds and is now recommended by the government as a way to improve both safety and productivity in the mining industry.

Wang Chengwen, a professor at the China University of Petroleum in Qingdao, Shandong province, said that one of the advantages of the new technology was that it was potentially more environmentally friendly than other fracking methods.

The waste water generated by traditional shale gas production contained large amounts of toxic chemicals that could contaminate rivers and underground water sources, he said.

However, it was yet to be seen if the force generated by the rod would be enough to fracture rocks at such extreme depths, he said.

Wang said that as the technology was still in its infancy, extra measures would have to be taken to ensure the safety of workers at the drilling site, while mass production would also require the construction of a huge network of underground support facilities.

“Fracturing is just part of shale gas production,” he said.

Aside from the technical challenges, Chen Qun, a professor at the school of water resources and hydropower at Sichuan University in Chengdu, said that scientists and politicians would have to consider the potentially devastating environmental damage that the new technology could cause.

While large shale gas reserves have been identified at seven sites across China, half of them are in Sichuan, a region of southwest China that is notorious for its deadly earthquake and landslides.

A magnitude 8 quake there in May 2008 left 87,000 people dead, 370,000 injured and 5 million homeless.

Chen said that while the shock waves produced by Zhang’s device would be relatively localised, if the technology was applied at multiple sites it could change the underlying geophysics of the region and put man-made infrastructure, like buildings and dams, at risk.

One of the largest shale gas deposits to be found in recent years is located near the city of Yichang, which is home to the Three Gorges Dam that spans the Yangtze River and is the world’s largest power station in terms of installed capacity.

A study by Stanford University in 2017 linked thousands of small tremors in the southern US state of Arkansas to shale gas production, and warned they might be early indicators of much bigger quakes to come.

Shi Lei, an associate professor with the school of environment at Tsinghua University, said that while increased shale gas production would be good for China’s economy and its energy supply chain, a possible downside was that it would lead to lower fossil fuel prices and thus hamper the development of renewable energy sources.

Moreover, whatever technological breakthroughs it made on shale gas extraction, China still had some way to go if it wanted to challenge the global order, Shi said.

“The US is the world leader on energy … and China can’t change that.”

His comments will be music to the ears of US President Donald Trump who has demanded China buy more American shale gas as a way to reduce its massive trade surplus.
 
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China builds world's longest 220kV AC submarine power cable
By Gong Zhe
2019-01-17 10:15 GMT+8

Electrical power systems are the backbone of modern life. But how does one "empower" remote islands?

One obvious answer remains "submarine power cables" also known as "sea power cables." These are transmission cables that carry electric power below the surface of the water.

However, developing a long-distance submarine power cable system could be extremely tricky.

China, which is home to some of the most exotic islands in the world, is making significant progress in electrifying its nature-rich islands.

Chinese engineers have recently built a 27-kilometer-long 200kV AC undersea power cable to connect the Chinese mainland to an offshore wind farm in Dalian City, northeast China's Liaoning Province.

The cable has no joints between terminations and can work problem-free even after lying on the seabed for decades.

"In a factory, we have to monitor the cable output for 25 days non-stop," said Li Ziwei, the manager the cable's production unit.

If anything goes wrong during the 25-day process, the engineers need to start all over again from the beginning. So, this work requires extreme caution.

"We achieved this after years of progress in technology," Li told CCTV.

It's the world's longest cable of its kind and has passed several levels of examination. Now, it's waiting to be put into actual use.

In December 2018, a 17-kilometer-long 500kV submarine cable was laid to electrify an island in Zhoushan City, east China's Zhejiang Province.

Very significant development for China's planned regional (East Asian) power grid project.
 
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Anadarko Announces LNG Sale and Purchase Agreement With CNOOC
Anadarko_Petroleum_Corp_Logo.jpg


NEWS PROVIDED BY
Anadarko Petroleum Corporation
Feb 01, 2019, 05:00 ET​

HOUSTON, Feb. 1, 2019 /PRNewswire/ -- Anadarko Petroleum Corporation (NYSE: APC) today announced Mozambique LNG1 Company Pte. Ltd., the jointly owned sales entity of the Mozambique Area 1 co-venturers, has signed a Sale and Purchase Agreement (SPA) with CNOOC Gas and Power Singapore Trading & Marketing Pte. Ltd. (CNOOC). The SPA is for 1.5 million tonnes per annum (MTPA) for a term of 13 years.

"We are pleased to announce this SPA with CNOOC, an important global energy player in one of the biggest and fastest growing LNG markets in the world," said Mitch Ingram, Anadarko Executive Vice President, International, Deepwater & Exploration. "This deal gives China's largest LNG importer access to Mozambique LNG's world-class gas resources, which are strategically located off the East Coast of Africa, and will provide China with a clean source of energy for years to come.

"Mozambique LNG is extremely pleased to have CNOOC onboard as one of our foundation customers," added Ingram. "This agreement adds to our growing list of customers in the Asia-Pacific region, demonstrating the excellent progress we are making toward our stated goal of taking a final investment decision during the first half of this year. We expect to announce further SPAs in the near future."

The Anadarko-operated Mozambique LNG project will be Mozambique's first onshore LNG development, initially consisting of two LNG trains with total nameplate capacity of 12.88 MTPA to support the development of the Golfinho/Atum fields located entirely within Offshore Area 1.

Anadarko Moçambique Área 1, Lda, a wholly owned subsidiary of Anadarko Petroleum Corporation, operates Offshore Area 1 with a 26.5-percent working interest. Co-venturers include ENH Rovuma Área Um, S.A. (15 percent), Mitsui E&P Mozambique Area1 Ltd. (20 percent), ONGC Videsh Ltd. (10 percent), Beas Rovuma Energy Mozambique Limited (10 percent), BPRL Ventures Mozambique B.V. (10 percent), and PTTEP Mozambique Area 1 Limited (8.5 percent).

Logo - http://photos.prnewswire.com/prnh/20141103/156201LOGO

Anadarko Petroleum Corporation's mission is to deliver a competitive and sustainable rate of return to shareholders by exploring for, acquiring and developing oil and natural gas resources vital to the world's health and welfare. As of year-end 2017, the company had approximately 1.44 billion barrels-equivalent of proved reserves, making it one of the world's largest independent exploration and production companies. For more information about Anadarko and APC Flash Feed updates, please visit www.anadarko.com. Learn more about the Mozambique LNG project at www.mzlng.com.

This news release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Anadarko believes that its expectations are based on reasonable assumptions. No assurance, however, can be given that such expectations will prove to have been correct. A number of factors could cause actual results to differ materially from the projections, anticipated results or other expectations expressed in this news release, including Anadarko's ability to successfully plan, secure additional government approvals, enter into long-term sales contracts, take FID and the timing thereof, finance, build, and operate the necessary infrastructure and LNG park in Mozambique. See "Risk Factors" in the company's 2017 Annual Report on Form 10-K, Quarterly Reports on Form 10-Q and other public filings and press releases. Anadarko undertakes no obligation to publicly update or revise any forward-looking statements.


https://www.prnewswire.com/news-rel...-purchase-agreement-with-cnooc-300787934.html
 
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12-Feb-2019

China builds world's largest clean coal power generation system

CGTN


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China has established the world's largest clean coal power generation system, setting a new milestone in cutting emissions and saving energy, the National Energy Administration (NEA) said Tuesday.

The country has beaten its target of ultra-low emission and energy conservation and transformation outlined in the country's 13th Five-Year Plan (2016-2020) two years in advance, the NEA said.

By the end of the third quarter of 2018, the capacity of the coal power generators with ultra-low emission in China reached more than 750 million kilowatts, accounting for over 75 percent of the country's total installed capacity of coal power generating units, data from the NEA showed.

Transformation of coal power generators resulted in an 86-percent decrease in sulfur dioxide emissions, 89-percent cut in nitrogen oxides, and 85 percent less smoke dust from 2012 to 2017, according to the China Electricity Council.

The NEA said it will continue to promote energy conservation and ultra-low emissions and speed up building a clean, efficient, and sustainable coal power industry.

(Cover: China's first 100 megawatt solar-thermal power plant of molten salt tower was put into operation in Dunhuang, Gansu Province. /VCG Photo)

https://news.cgtn.com/news/3d3d774e79556a4e32457a6333566d54/index.html
 
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Nation set to reduce reliance on imports

2019-02-14 10:56:14 China Daily Editor : Mo Hong'e

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Technicians inspect production facilities at Sinopec's Fuling shale gas field in Southwest China's Chongqing municipality. (Photo/Xinhua)

The proportion of shale gas in China's energy mix is expected to grow continuously, leading analysts to forecast the development of the clean fuel will reduce China's dependency on energy imports and thus improve national energy security.

China has been heavily relying on oil and gas imports in recent years.

As the largest crude and gas importer worldwide, the country imported 440 million metric tons of crude oil in 2018, a year-on-year increase of 11 percent, and 125.4 billion cubic meters of gas, a year-on-year increase of 31.7 percent, according to figures from China National Petroleum Corp's Economics and Technology Research Institute.

The dependence ratio on foreign oil and gas reached 69.8 percent and 45.3 percent respectively, and is expected to continue rising in 2019, the institute said.

However, China's higher gas-consumption goals will be fulfilled by developing the shale gas sector, said Wang Lu, Asia-Pacific oil and gas analyst at Bloomberg Intelligence.

"Shale gas will play a big role in meeting China's gas demand," said Wang. "Shale gas output may reach 30 billion cu m by 2020, equal to 9 percent of the country's total gas consumption. The ratio can increase to 15 percent to 19 percent in 2030 as China reaches its target of producing 80 billion to 100 billion cu m of shale gas annually."

While the country boasts the world's largest recoverable shale gas resources, the shale fields, which usually lie deep underground, in densely populated mountainous regions, are more fractured. These challenges lead to higher costs and complications in drilling.

However, domestic oil companies have been making significant progress with drilling technology and cost cutting in recent years, as China vows to support the sector's development to shift its energy reliance from coal to gas.

According to Wang, fracking efficiency has enhanced by 50 percent and drilling time reduced by half, compared with the initial development period.

The cost of developing a shale gas well has been cut to 50 million yuan ($7.38 million), from 80 million to 100 million yuan in the industry's early stages. China has developed shale resources at depths of less than 3,500 meters, she said.

"To reach the nation's shale gas output targets for 2020 and 2030, the exploration depth needs to go deeper," Wang said.

According to energy consultancy Wood Mackenzie, 700 new wells will come onstream by 2020 at three key projects - Sinopec's Fuling shale gas field, and CNPC's Changning-Weiyuan field and Zhaotong field - all located in the country's southwest, with a total cost of $5.5 billion.

Considerable progress has helped to unlock shale gas' potential over the past decade. China's shale gas output was 9 billion cu m in 2017, accounting for 4 percent of the country's gas consumption, while the figures for 2014 were 1.3 billion cu m and 0.7 percent respectively, according to Wang.

http://www.ecns.cn/business/2019-02-14/detail-ifzeratr8868633.shtml
 
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Seabed electric cable brought onshore in China's Hainan
New China TV
Published on Feb 13, 2019

Workers have brought a seabed electric cable onshore in China's typhoon-prone island of Hainan. Find out why it is significant.
 
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21 Feb 2019 | 16:00 GMT
China’s Ambitious Plan to Build the World’s Biggest Supergrid
A massive expansion leads to the first ultrahigh-voltage AC-DC power grid

By Peter Fairley

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Photo: State Grid Corp. of China
Big Picture: This Beijing dispatch center controls most of China’s ultrahigh-voltage lines and monitors renewable energy use.


Wind rips across an isolated utility station in northwestern China’s desolate Gansu Corridor. More than 2,000 years ago, Silk Road traders from Central Asia and Europe crossed this arid, narrow plain, threading between forbidding mountains to the south and the Gobi Desert to the north, bearing precious cargo bound for Imperial Beijing. Today the corridor carries a distinctly modern commodity: gigawatts of electricity destined for the megacities of eastern China. One waypoint on that journey is this ultrahigh-voltage (UHV) converter station outside the city of Jiuquan, in Gansu province.



--> China’s Ambitious Plan to Build the World’s Biggest Supergrid - IEEE Spectrum
 
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Shanghai begins trial of superconducting power line
Source: Xinhua| 2019-02-21 20:18:13|Editor: Liangyu

SHANGHAI, Feb. 21 (Xinhua) -- Shanghai has started a trial project to install superconducting cables in the city's power grids, the Municipal Commission of Economy and Informatization said Thursday.

The project, expected to be put into operation by the end of the year, aims to test the reliability, stability and economics of implementing high-temperature superconducting technology in the power grids of a mega-city like Shanghai, the commission said.

With advantages of high transmission efficiency, high capacity and zero pollution, superconducting technology can be widely used in areas such as upgrading a city's power grids and maglev transportation.

The commission hopes that the pilot project will be a model for wider-scale implementation of the technology in the future.

The superconducting cables used in the project will be developed and manufactured in Shanghai's Baoshan district, and tested in Xuhui district in central Shanghai.

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