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【特高压混合直流与特高压柔性直流输电技术实现远距离送电】11月24日,世界首个特高压多端混合直流输电工程——昆柳龙直流工程昆北-龙门极2高低端换流器成功解锁,系统电压第一次跃升至800千伏,输送功率稳增到800兆瓦,标志着昆柳龙直流工程开启800kV运行模式,特高压进入柔性直流新时代。这也是世界首次运用特高压混合直流和特高压柔性直流输电技术实现远距离送电。O网页链接
Polaris Power Network
Today at 17:02 from Weibo

[UHV hybrid DC and UHV flexible DC transmission technology to achieve long-distance power transmission]


On November 24, the world’s first UHV multi-terminal hybrid DC transmission project—Kunliu-Long DC Project Kunbei-Longmenji 2 high- and low-end converter was successfully unlocked, and the system voltage jumped to 800 kV for the first time, and the transmission power The steady increase to 800 MW marks the opening of the 800kV operation mode of the Kunliulong DC Project, and UHV has entered a new era of flexible DC. This is also the world's first use of UHV hybrid DC and UHV flexible DC transmission technology to achieve long-distance power transmission.

 
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World's highest-altitude grid project starts construction in Tibet
Source: Xinhua| 2019-09-18 10:19:52|Editor: huaxia

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Aerial photo taken on July 27, 2019 shows Lake Manasarovar, a holy lake, in Ali Prefecture, southwest China's Tibet Autonomous Region. (Xinhua/Jigme Dorje)

With a total length of 1,689 km, the project, which goes from Xigaze to Ali, stretches across permafrost, no man's land and swamps.

LHASA, Sept. 18 (Xinhua) -- The world's highest power transmission and transformation project started construction Tuesday in southwest China's Tibet Autonomous Region.

With a total length of 1,689 km, the project, which goes from Xigaze city to Ali Prefecture, stretches across permafrost, no man's land and swamps.

The project requires a total investment of 7.4 billion yuan (about 1.05 billion U.S. dollars) and is planned to be completed in 2021, benefiting nearly 380,000 people along the line.

With towers at an average elevation of over 4,000 meters, the project is said to be an extremely difficult "power heaven road" due to the harsh construction environment, dangerous road conditions, poor logistics support and strict environmental protection requirements.

The project connecting 10 Tibetan counties will end the days when the power grid of Ali Prefecture is isolated from the rest of Tibet, thus improving the reliability of power supply in the prefecture, industrial sources said.

It will also help Tibet's poverty reduction and paves the way for the supply of Tibet's clean energy to South Asia, the sources said.

Since 2007, the State Grid Corporation of China has injected 14.5 billion yuan into Tibet's power grid construction, effectively improving the local power supply.
People's Daily, China @PDChina
China state-affiliated media

Ali Grid Interconnection Project in SW China's #Tibet, the world's highest ultra-high voltage power transmission and transformation project, was officially put into operation on Friday, connecting Ngari Prefecture to the national grid.

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2:30 PM · Dec 4, 2020
 
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Large, High-quality Oil, Gas Resources Ascertained in Xinjiang
Nov 28, 2020
CCTV Video News Agency

A preliminary exploratory well in Junggar Basin of northwest China's Xinjiang Uygur Autonomous Region has recently been confirmed to be a high-yield oil and gas well, thus ascertaining over 500 million tons of high-quality light crude oil and natural gas resources underground in the region. http://www.cctvplus.com/news/20201128...
Natural gas exploration achieves giant leap in Xinjiang's Junggar Basin
2020-12-18 16:17:53 Ecns.cn Editor : Mo Hong'e

No. 1 well of Hutubi in the middle of southern margin of Junggar Basin, Xinjiang Uyghur Autonomous Region. (Photo provided to China News Service)

No. 1 well of Hutubi in the middle of southern margin of Junggar Basin, Xinjiang Uyghur Autonomous Region. (Photo provided to China News Service)

(ECNS) — Oil exploration achieved a breakthrough at a well in Hutubi County, Xinjiang Uyghur Autonomous Region, PetroChina's Xinjiang Oilfield Company announced Wednewsday.

Located in the middle of southern margin of Junggar Basin, the well boasts a daily production capacity of 61,000 cubic meters of natural gas and 106.3 cubic meters of crude oil.

The well is estimated to store a billion cubic meters of oil and gas.
 
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【特高压混合直流与特高压柔性直流输电技术实现远距离送电】11月24日,世界首个特高压多端混合直流输电工程——昆柳龙直流工程昆北-龙门极2高低端换流器成功解锁,系统电压第一次跃升至800千伏,输送功率稳增到800兆瓦,标志着昆柳龙直流工程开启800kV运行模式,特高压进入柔性直流新时代。这也是世界首次运用特高压混合直流和特高压柔性直流输电技术实现远距离送电。O网页链接
Polaris Power Network
Today at 17:02 from Weibo

[UHV hybrid DC and UHV flexible DC transmission technology to achieve long-distance power transmission]


On November 24, the world’s first UHV multi-terminal hybrid DC transmission project—Kunliu-Long DC Project Kunbei-Longmenji 2 high- and low-end converter was successfully unlocked, and the system voltage jumped to 800 kV for the first time, and the transmission power The steady increase to 800 MW marks the opening of the 800kV operation mode of the Kunliulong DC Project, and UHV has entered a new era of flexible DC. This is also the world's first use of UHV hybrid DC and UHV flexible DC transmission technology to achieve long-distance power transmission.

People's Daily, China @PDChina
China state-affiliated media

The Kunliulong DC Transmission Line Project, the world’s 1st UHV flexible DC transmission line project, began operation on Sunday. Linking the Greater Bay Area and the world's 7th largest hydropower plant, Wudongde Hydropower Station, the project holds 19 world records.

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10:30 AM · Dec 28, 2020
 
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The Three Gorges Dam, the world's biggest hydroelectric plant in terms of installed capacity, generated 111.795 billion kilowatt-hours of electricity in 2020, its operator announced, setting a new world record for annual power generation volume from a single hydropower station.

Clean electricity generation for all of 2020 reached 111.795 billion kilowatt-hours as of 12:00 pm Dec 31, smashing the previous world record of 103.098 billion kWh set by South America's Itaipu Dam in 2016, China Three Gorges Corporation said.

The volume of the clean electricity the Three Gorges Dam generated in 2020 is equivalent to saving 34.39 million tons of standard coal and reducing emissions of carbon dioxide, sulfur dioxide and nitrogen oxides by 94.02 million, 224,000 and 212,000 tons respectively, a boon to China's efforts to build a clean, safe, efficient and low-carbon energy system and contributing to its green development initiatives.

Earlier in 2020, when China was grappling with the COVID-19 pandemic, the Three Gorges hydropower plant continued to increase its power output and peak load regulating capacity, transmitting record clean energy to provinces and cities such as Hubei, Zhejiang and Shanghai and providing solid energy supplies to the prevention and control of the pandemic and the economic recovery.

According to estimates by economists, one kilowatt-hour of electricity can produce 13.8 yuan of gross domestic product, therefore the massive electricity of 111.8 billion kilowatt-hours of electricity the Three Gorges Dam generated in 2020 might have supported 1.54 trillion yuan's worth of GDP.

Five floods occurred along the Yangtze River basin during the flood season in 2020, with the largest peak flow rate reaching 75,000 cubic meters per second. With the strong support and help of relevant institutions and units such as the listed arm China Yangtze Power, CTG fully implemented risk management and control measures for the Three Gorges project during the flood season to optimize its operations.

These efforts also helped CTG enhance the accuracy of forecasting water and rainfall conditions in the river basin and improve its capability to coordinate control of the cascade reservoirs, laying a solid foundation for the power plant to operate at full load uninterrupted. As a result, CTG was able to mitigate floods and maintain smooth running of the equipment, keeping the Three Gorges project in safe and stable operating condition.

Since December 2020, a cold snap swept parts of China, causing temperatures to tumble and power consumption to surge in some regions due to increased household heating needs. The Three Gorges Dam has increased electricity supply during peak hours to regions where its electricity is used, filling the electricity supply gap.

The Three Gorges Dam is a backbone supplier of electricity in the country, supplying electricity to East and South China. The dam, equipped with 34 turbo generators with a combined generating capacity of 22.5 million kilowatts, has a designed annual power generation of 88.2 billion kilowatt-hours. The project has generated a total of 1.3 trillion kilowatt-hours of clean electricity as of the end of 2020 since it became operational in 2003.

 
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China's exploration of flammable ice sets world records
Xinhua | Updated: 2020-03-26 15:30

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A view of flammable ice mining. [Photo/People's Daily Online]

BEIJING -- China on Thursday announced that several breakthroughs were made during a recent trial exploration of mining gas hydrates, known as flammable ice, in the South China Sea.

In a sea area with a depth of 1,225 meters, the country has extracted 861,400 cubic meters of gas, with an average daily extraction of 28,700 cubic meters, setting two new world records, according to the Ministry of Natural Resources.
China: Qingdao Made New Progress in the Field of Flammable Ice Mining
12 Jan 2021 by WorldEnergy

Recently, the patent technology "sea muddy silt natural gas hydrate gravel huff and puff replacement mining device and method" declared by the Qingdao Institute of Marine Geology, China Geological Survey of the Ministry of Natural Resources, was authorized by the National Intellectual Property Office and officially obtained a US patent. This is where Qingdao Haiti has once again made new progress in the research field of new methods of natural gas hydrate (flammable ice) mining.

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This patented technology, combined with the national invention patent technology and Japanese patents that the previous team has obtained authorization, has laid the core of the method of sand-controlling natural gas hydrate in the sea. Focusing on this core technology, the current team has also obtained relevant subsidiary patented technologies. The clustering effect of intellectual property rights in the offshore natural gas hydrate gravel huff and puff replacement mining technology has initially appeared, which will provide potential technical support for the industrialized exploitation of sea natural gas hydrates.
 
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Shen Hai Yi Hao: deep-water floater ready for action Photo: CNOOC/COOEC
Video: CNOOC delivers giant South China Sea floater as first gas nears
World’s first floater with liquid storage capacity will arrive at Lingshui site in South China Sea in February, with first gas is expected in June

14 January 2021 8:40 GMT UPDATED 14 January 2021 8:40 GMT
By Xu Yihe in Singapore



 
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Yicai Global 第一财经 @yicaichina
China state-affiliated media

China National Offshore Oil Corporation, or CNOOC, has discovered a large crude oil and natural gas reserve at Bozhong 13-2 in Bohai Bay, 140 kilometers from the northeastern city of Tianjin. It can supply an average of 300 tons of oil and 150,000 cubic meters of gas a day.

CNOOC's New Discovery May Turn Bohai Oilfield Into China's Biggest Crude Producer https://bit.ly/3qMl0LY
 
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最近,中科院工程热物理所兆瓦级超临界二氧化碳压缩机工程样机在运行测试中达到100%设计转速,最大总压比超过2.685,最大质量流量接近16kg/s,累计运行时间接近100h,各项参数均达到设计指标,实验测试取得成功。°工程热物理所兆瓦级超临界二氧化碳压缩机测试...

Voice of Chinese Academy of Sciences
Today at 20:30 from Weibo

Recently, the megawatt supercritical carbon dioxide compressor engineering prototype of the Institute of Engineering Thermophysics of the Chinese Academy of Sciences reached 100% of the design speed in the operation test, the maximum total pressure ratio exceeded 2.685, the maximum mass flow rate was close to 16kg/s, and the cumulative running time was close to 100h. The parameters all reached the design target, and the experimental test was successful. °Megawatt supercritical carbon dioxide compressor test of Institute of Engineering Thermophysics...

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From Hendrik_2000 via sinodefence,

Well good news China shale gas finally taking off
China’s Shale Gas Industry Is Finally Taking Off

Editor OilPrice.com
Sat, April 17, 2021, 10:00 AM


During the first two months of 2021, the Chinese oil and gas giant Sinopec managed to bring 28 new shale gas wells on stream in the country. The company also announced that the shale gas production from its major Fuling field jumped by 20% compared to last year. And despite the recent collapse in oil and gas prices, as well as the uncertainty brought by the Covid-19 pandemic, Sinopec remains optimistic on the future of shale gas. Its latest achievement was the completion of the first phase of a new shale field in Weirong, adding 1 billion cubic meters of shale capacity.
This series of breakthroughs reveal a more global trend: a possible revolution in the Chinese shale gas sector. But in a country traditionally relying on conventional gas resources, how realistic is this “shale boom”?
A “coal to shale gas” switch?

The share of natural gas in China’s total energy consumption reached a modest 8% in 2019. However, this figure is expected to climb as a result of China’s strategy to move away from coal, resulting in rising industrial and residential gas consumption. One of the drivers of the rise in gas production is likely to be shale gas, which represented 6% of total gas production in the country in 2019.

Inspired by the fracking boom of the 2000s in the United States, China is eager to reproduce a similar trend domestically. Its proven geological reserves amount to 31 trillion cubic meters and are the world’s largest shale gas reserves, according to the US Energy Information Administration. Being the second country in the world to achieve shale gas commercialization, China expects its shale gas production to grow in the coming years, and already plans a 34 billion cubic meters output in 2021. To do so, it will rely on its main asset: the Sichuan basin, where it has bet on doubling shale gas production through 2025.(cont)
 
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