One side is a power gap of about 30 million kilowatts, and one side is 15 million kilowatts of power in Inner Mongolia. The early "electricity shortage" was once again paralysed.
The construction of the outgoing power transmission channel is lagging and the transregional transmission capacity is insufficient, which affects the optimal allocation of power resources throughout the country. Under the layout of newly installed domestic power installations in the west, the scale and structure of the existing domestic power grids are not in harmony with them. Trans-regional transmission of power cannot meet the needs of the province's power supply.
According to Shuai Junqing, deputy general manager of the State Grid Corporation of China, “The development of thermal power in the eastern region of China is extremely limited, and it is urgently necessary to import electricity from the western and northern energy bases through cross-regional power grids. However, the current construction of cross-regional power grids lags behind and cross-regional transmission capacity is insufficient. It is difficult for the surplus power of the northeast and northwest grids to support North China, East China and Central China power grids.
Among these, Inner Mongolia Electric Power Delivery Center is the most constrained. According to the statistics, at present, there are only two channels outside the Inner Mongolia Power Grid sent to the North China Power Grid, with a transmission capacity of 4.3 million kilowatts, an actual peak power transmission of 3.9 million kilowatts, and a low valley transmission of about 3 million kilowatts.
Although the delivery route was not smooth, it was unable to stop the surge in installed capacity in Inner Mongolia. During the “Eleventh Five-Year Plan†period, Inner Mongolia’s installed power capacity increased from 20 million kilowatts to nearly 70 million kilowatts. At the end of the "Twelfth Five-Year Plan," Inner Mongolia plans to install 120 million kilowatts of thermal power, 30 million kilowatts of wind power, and 1 million kilowatts of solar power.
However, the precondition for achieving the above goals is to build at least three UHV power transmission channels.
Lagging power grid construction Power grids lagging behind the construction of power points are already established facts. People in the power industry stated that the construction of cross-regional power grids during the “11th Five-Year Plan†period was not completed on schedule and it was lagging behind in planning.
Cai Guoxiong, a member of the National Committee of the Chinese People's Political Consultative Conference and deputy chief engineer of the China Electric Power Research Institute, said that government work reports over the years emphasized the construction of power points and did not propose coordination between power grid investment and power supply construction. "Although we have proposed changes, we have not yet been affirmed."
According to Shan Yuguo, director of the Institute of Energy and Energy Supply and Demand Research of the State Grid Energy Research Institute, “At present, the State Grid Corporation’s regional transmission capacity for regional power transmission is 31.67 million kilowatts, which is less than 7% of the company’s operating area’s maximum electricity load. The power grid construction is seriously lagging behind."
The large-scale deployment of domestic power occurred after the separation of the plant and the power grid. The construction of the power grid was lagging behind that of the power supply. As a result, power supply planning is not coordinated with grid planning in terms of layout and structure.
According to Min Mingdong, deputy chief engineer of China Power Engineering Consulting Group, "In the 1980s, the proportion of power and grid investment in the nation's power construction investment was 7:3. Until the end of the 11th Five-Year Plan period, investment in power grids and power supply gradually Flat."
According to statistics from the China National Electricity Regulatory Commission, the investment in power engineering construction in 2010 was 364.1 billion yuan, a decrease of 4.26% from the previous year, and grid investment completed 340.1 billion yuan, a decrease of 12.53% over the previous year.
At present, the development of domestic power supply is more focused on the development of power stations at ports, harbors, and intersections, as well as large-capacity, high-parameter, and large-scale units. It fails to meet the needs of safe and stable operation of the power grid, and overall consideration is given to the layout and structure of power supplies. Once the grid structure is irrational, there will be major safety problems such as large-scale power outages, grid disconnection, and operation of isolated networks.
“Another reason why grid construction is lagging behind is that the planning and construction of power grids must be approved by the National Development and Reform Commission and must be included in local development plans. Some localities did not approve the construction of power plants first, so that the grid seriously lags behind the construction of power plants. Coastal Jiangsu, Zhejiang, Guangdong, etc. There are also cases in the area," said Yan Mingdong.
According to the above sources, due to the relatively long time required for the approval and approval of relevant supporting documents required for power grid construction and the contradiction between power grid construction and urban-rural development, the resistance to land acquisition and compensation increases, and the construction period of power grids is difficult to control.
Of the many unlicensed local power stations, Guizhou Faer Power Plant is typical. The power plant is a large pit power plant. In 2003, it was launched before land, water, soil and water conservation, environmental protection, and access systems were approved. In 2005, the project was famous for being halted by four ministries and commissions.
UHV into straw?
Despite the controversy, the UHV power grid has become a place of life at this time.
State Grid Corporation of China plans to build an UHV synchronous grid in North China, Central China, and East China (“Sanhuaâ€) during the “12th Five-Year Plan†period to form a “three vertical and three horizontal and one horizontal gridâ€.
Whether it is sent to Shanxi, Inner Mongolia or the provinces of Hubei and Jiangxi, the UHV has become an expectation.
In January 2009, the “Southeastern Shanxi-Nanyang-Jingmen†UHV 1000 kV UHV transmission line was completed. This is the first UHV transmission line to be put into commercial operation in China.
However, UHV's contribution is similar to that of Hubei Province's 30 million-kilowatt electricity load. The power supply point in the southeastern region of Shanxi is limited by its water capacity constraints.
Recently, “Southeastern Shanxi-Nanyang-Jingmen†is undergoing expansion and transformation, and its transmission capacity is expected to double by 6 million kilowatts, which will provide Hubei with 5 million kilowatts of stable electricity. According to media in Hubei Province, “This move saves 12.5 million tons of coal per year in Hubei, which is equivalent to adding electricity to two Gezhouba Power Stations.â€
Power shortage province Jiangxi is also planning a UHV project in the province. According to the Jiangxi power grid plan, Jiangxi will build the Wuhan-Nanchang 1000 kV UHV power transmission and transformation project in 2012, and the 2015 Dongdong-Xinyu ±800 kV DC UHV power transmission and transformation project will be completed, which will open up the western coal power station. The access routes for large hydropower and large renewable energy bases fundamentally ease the tight supply of electricity.
For major provinces such as Shanxi and Inner Mongolia, the UHV has become an important route for power transmission and building energy bases.
Shanxi promoted the "Jindian Power Transmission" project. In the past two years, Shanxi has signed agreements with Shandong, Hunan, and Jiangsu to send 10 million kilowatts of electricity and 5 million kilowatts of electricity to Hubei. In addition, it plans to add 5 million kilowatts of electricity to North China. Shanxi's "Twelfth Five Year Plan" outside the power transmission market has basically been implemented.
At the two conferences this year, the Shanxi delegation submitted the "Proposal on Supporting the Development of the Coal-fired Power Industry in Shanxi", which is the first proposal submitted by the Shanxi delegation.
Inner Mongolia is pinning its hopes on “coal from the air†on UHV lines. According to the "12th Five-Year Plan" of Inner Mongolia Energy, if the seven power transmission channels planned by the State Grid Corporation of China are completed, the power delivered by Inner Mongolia can reach 60 million kilowatts, and 200 million tons of raw coal can be converted accordingly.
The construction of the outgoing power transmission channel is lagging and the transregional transmission capacity is insufficient, which affects the optimal allocation of power resources throughout the country. Under the layout of newly installed domestic power installations in the west, the scale and structure of the existing domestic power grids are not in harmony with them. Trans-regional transmission of power cannot meet the needs of the province's power supply.
According to Shuai Junqing, deputy general manager of the State Grid Corporation of China, “The development of thermal power in the eastern region of China is extremely limited, and it is urgently necessary to import electricity from the western and northern energy bases through cross-regional power grids. However, the current construction of cross-regional power grids lags behind and cross-regional transmission capacity is insufficient. It is difficult for the surplus power of the northeast and northwest grids to support North China, East China and Central China power grids.
Among these, Inner Mongolia Electric Power Delivery Center is the most constrained. According to the statistics, at present, there are only two channels outside the Inner Mongolia Power Grid sent to the North China Power Grid, with a transmission capacity of 4.3 million kilowatts, an actual peak power transmission of 3.9 million kilowatts, and a low valley transmission of about 3 million kilowatts.
Although the delivery route was not smooth, it was unable to stop the surge in installed capacity in Inner Mongolia. During the “Eleventh Five-Year Plan†period, Inner Mongolia’s installed power capacity increased from 20 million kilowatts to nearly 70 million kilowatts. At the end of the "Twelfth Five-Year Plan," Inner Mongolia plans to install 120 million kilowatts of thermal power, 30 million kilowatts of wind power, and 1 million kilowatts of solar power.
However, the precondition for achieving the above goals is to build at least three UHV power transmission channels.
Lagging power grid construction Power grids lagging behind the construction of power points are already established facts. People in the power industry stated that the construction of cross-regional power grids during the “11th Five-Year Plan†period was not completed on schedule and it was lagging behind in planning.
Cai Guoxiong, a member of the National Committee of the Chinese People's Political Consultative Conference and deputy chief engineer of the China Electric Power Research Institute, said that government work reports over the years emphasized the construction of power points and did not propose coordination between power grid investment and power supply construction. "Although we have proposed changes, we have not yet been affirmed."
According to Shan Yuguo, director of the Institute of Energy and Energy Supply and Demand Research of the State Grid Energy Research Institute, “At present, the State Grid Corporation’s regional transmission capacity for regional power transmission is 31.67 million kilowatts, which is less than 7% of the company’s operating area’s maximum electricity load. The power grid construction is seriously lagging behind."
The large-scale deployment of domestic power occurred after the separation of the plant and the power grid. The construction of the power grid was lagging behind that of the power supply. As a result, power supply planning is not coordinated with grid planning in terms of layout and structure.
According to Min Mingdong, deputy chief engineer of China Power Engineering Consulting Group, "In the 1980s, the proportion of power and grid investment in the nation's power construction investment was 7:3. Until the end of the 11th Five-Year Plan period, investment in power grids and power supply gradually Flat."
According to statistics from the China National Electricity Regulatory Commission, the investment in power engineering construction in 2010 was 364.1 billion yuan, a decrease of 4.26% from the previous year, and grid investment completed 340.1 billion yuan, a decrease of 12.53% over the previous year.
At present, the development of domestic power supply is more focused on the development of power stations at ports, harbors, and intersections, as well as large-capacity, high-parameter, and large-scale units. It fails to meet the needs of safe and stable operation of the power grid, and overall consideration is given to the layout and structure of power supplies. Once the grid structure is irrational, there will be major safety problems such as large-scale power outages, grid disconnection, and operation of isolated networks.
“Another reason why grid construction is lagging behind is that the planning and construction of power grids must be approved by the National Development and Reform Commission and must be included in local development plans. Some localities did not approve the construction of power plants first, so that the grid seriously lags behind the construction of power plants. Coastal Jiangsu, Zhejiang, Guangdong, etc. There are also cases in the area," said Yan Mingdong.
According to the above sources, due to the relatively long time required for the approval and approval of relevant supporting documents required for power grid construction and the contradiction between power grid construction and urban-rural development, the resistance to land acquisition and compensation increases, and the construction period of power grids is difficult to control.
Of the many unlicensed local power stations, Guizhou Faer Power Plant is typical. The power plant is a large pit power plant. In 2003, it was launched before land, water, soil and water conservation, environmental protection, and access systems were approved. In 2005, the project was famous for being halted by four ministries and commissions.
UHV into straw?
Despite the controversy, the UHV power grid has become a place of life at this time.
State Grid Corporation of China plans to build an UHV synchronous grid in North China, Central China, and East China (“Sanhuaâ€) during the “12th Five-Year Plan†period to form a “three vertical and three horizontal and one horizontal gridâ€.
Whether it is sent to Shanxi, Inner Mongolia or the provinces of Hubei and Jiangxi, the UHV has become an expectation.
In January 2009, the “Southeastern Shanxi-Nanyang-Jingmen†UHV 1000 kV UHV transmission line was completed. This is the first UHV transmission line to be put into commercial operation in China.
However, UHV's contribution is similar to that of Hubei Province's 30 million-kilowatt electricity load. The power supply point in the southeastern region of Shanxi is limited by its water capacity constraints.
Recently, “Southeastern Shanxi-Nanyang-Jingmen†is undergoing expansion and transformation, and its transmission capacity is expected to double by 6 million kilowatts, which will provide Hubei with 5 million kilowatts of stable electricity. According to media in Hubei Province, “This move saves 12.5 million tons of coal per year in Hubei, which is equivalent to adding electricity to two Gezhouba Power Stations.â€
Power shortage province Jiangxi is also planning a UHV project in the province. According to the Jiangxi power grid plan, Jiangxi will build the Wuhan-Nanchang 1000 kV UHV power transmission and transformation project in 2012, and the 2015 Dongdong-Xinyu ±800 kV DC UHV power transmission and transformation project will be completed, which will open up the western coal power station. The access routes for large hydropower and large renewable energy bases fundamentally ease the tight supply of electricity.
For major provinces such as Shanxi and Inner Mongolia, the UHV has become an important route for power transmission and building energy bases.
Shanxi promoted the "Jindian Power Transmission" project. In the past two years, Shanxi has signed agreements with Shandong, Hunan, and Jiangsu to send 10 million kilowatts of electricity and 5 million kilowatts of electricity to Hubei. In addition, it plans to add 5 million kilowatts of electricity to North China. Shanxi's "Twelfth Five Year Plan" outside the power transmission market has basically been implemented.
At the two conferences this year, the Shanxi delegation submitted the "Proposal on Supporting the Development of the Coal-fired Power Industry in Shanxi", which is the first proposal submitted by the Shanxi delegation.
Inner Mongolia is pinning its hopes on “coal from the air†on UHV lines. According to the "12th Five-Year Plan" of Inner Mongolia Energy, if the seven power transmission channels planned by the State Grid Corporation of China are completed, the power delivered by Inner Mongolia can reach 60 million kilowatts, and 200 million tons of raw coal can be converted accordingly.
LED High Bay Light Co., Ltd. , http://www.nsfloodlight.com