Recently, according to the Chinese government's website, the National Development and Reform Commission’s “Opinions on Implementing a New Round of Rural Power Grid Transformation and Upgrading Project†(hereinafter referred to as “Opinionsâ€) has been approved by the State Council. The General Office of the State Council forwarded the relevant circular to require all localities and relevant ministries and commissions of the State Council to implement a new round of upgrading and upgrading of rural power grids during the “Twelfth Five-Year Plan†period, strengthen the construction of rural power infrastructure, and meet the needs of farmers’ lives and agricultural production. Faced with another upgrade.
In fact, since 2010, the State Grid Corporation of China has carried out a new round of rural network transformation work.
“The new round of rural power grid reconstruction projects initiated by the National Plan spans a period of 3 to 5 years, and the annual investment scale exceeds 50 billion yuan. State Grid Corporation of China decided to implement a new round of rural power grid transformation and upgrading in 2010–2015. It will bring unlimited promise to related equipment manufacturers.†Zhang Zhongle, deputy director of the Institute of Rural Electric Power and Power Distribution at the China Electric Power Research Institute, told reporters.
According to its introduction, at present, China's rural distribution network still has problems such as “cracker†and low voltage. The first reason for these problems is the shortage of power supply. This problem has not been solved for more than 20 years; followed by the main grid structure. Relatively weak, 110 kV and 35 kV transformer substations have the problem of single power at different levels. In the future, it is necessary to build dual power supplies. Third, the 10 kV power grid is mainly radial, with more severe aging, more damage, and insulation. The level is lower; Fourth, the level of low-voltage power grid equipment is not high; Fifth, the 35 kV reactive power compensation capacity basically meets the requirements of the regulations, but the medium-low voltage compensation capacity is small, and the client voltage is low. This round of rural network transformation will cover all the above voltage levels.
In this round of rural power grid upgrading and reconstruction projects, the State Grid Corporation will accelerate the construction of the county grid power supply based on 220 kV substations and the 110 kV system to meet the N-1 requirements of the county grid, eliminating the weak links in the county grid; In the economically developed regions, we must appropriately control the development of 35-kilovolt transformer substations and implement dual-supply power supply construction projects for existing substations. In 2015, 85% of substations will provide dual-supply power supply to improve the reliability of power supply in the county-level power grid; Research on 10kV power grids in small towns, formulating unified, high standards and guidelines for the development of power grids that are suitable for intelligent development; guiding and regulating the distribution network for small towns; continuing to upgrade 10kV grids; 80% of the 10kV lines in the county seats To achieve ring network (hand-in-hand) power supply, the insulation rate of the county's 10-kilovolt line should reach 45%, and the transformation of rural 10-kilovolt mains lines should be intensified, the power supply scope should be optimized, and the transformation of over-run-time lines should be basically completed; Gradually increase the oil-free rate of substations and circuit breakers, and promote the use of emerging energy-saving transformers such as S11 and S13 amorphous alloys to progressively High energy distribution transformer; reactive power optimization work to be carried out, select the appropriate mode of compensation, carry out the substation and power quality line of comprehensive management, solve the rural power low voltage problem.
“After this round of transformation, we hope that in 2012 and 2015, the reliability of power supply will reach 99.72% and 99.75% respectively, and the comprehensive voltage of rural power grids will reach 97.8% and 98.2%, respectively, and the comprehensive line loss rate of rural power grids at 35 kV and below. It dropped to 4.75% and 4.7% respectively," said Zhang Zhongle.
Behind the various projects, the support of different power equipment is needed. In the face of such a huge market for rural power transformation, Zhang Zhongle reminds power equipment manufacturers to be calm.
“In the face of such a rare opportunity, every equipment manufacturer will be excited. But it should also be noted that every opportunity for the upgrading of the rural network requires the enterprise to unswervingly carry out multi-disciplinary research and innovation and system integration. This requires companies to have a clear direction of the industry, to do something wrong, not to earn money, but also to control the pace of progress in the industry or business; to build their own potential, rely on technological innovation, improve their competitiveness At the same time, there must be a strong sense of crisis at any time to accurately grasp the latest market conditions." He said.
In fact, since 2010, the State Grid Corporation of China has carried out a new round of rural network transformation work.
“The new round of rural power grid reconstruction projects initiated by the National Plan spans a period of 3 to 5 years, and the annual investment scale exceeds 50 billion yuan. State Grid Corporation of China decided to implement a new round of rural power grid transformation and upgrading in 2010–2015. It will bring unlimited promise to related equipment manufacturers.†Zhang Zhongle, deputy director of the Institute of Rural Electric Power and Power Distribution at the China Electric Power Research Institute, told reporters.
According to its introduction, at present, China's rural distribution network still has problems such as “cracker†and low voltage. The first reason for these problems is the shortage of power supply. This problem has not been solved for more than 20 years; followed by the main grid structure. Relatively weak, 110 kV and 35 kV transformer substations have the problem of single power at different levels. In the future, it is necessary to build dual power supplies. Third, the 10 kV power grid is mainly radial, with more severe aging, more damage, and insulation. The level is lower; Fourth, the level of low-voltage power grid equipment is not high; Fifth, the 35 kV reactive power compensation capacity basically meets the requirements of the regulations, but the medium-low voltage compensation capacity is small, and the client voltage is low. This round of rural network transformation will cover all the above voltage levels.
In this round of rural power grid upgrading and reconstruction projects, the State Grid Corporation will accelerate the construction of the county grid power supply based on 220 kV substations and the 110 kV system to meet the N-1 requirements of the county grid, eliminating the weak links in the county grid; In the economically developed regions, we must appropriately control the development of 35-kilovolt transformer substations and implement dual-supply power supply construction projects for existing substations. In 2015, 85% of substations will provide dual-supply power supply to improve the reliability of power supply in the county-level power grid; Research on 10kV power grids in small towns, formulating unified, high standards and guidelines for the development of power grids that are suitable for intelligent development; guiding and regulating the distribution network for small towns; continuing to upgrade 10kV grids; 80% of the 10kV lines in the county seats To achieve ring network (hand-in-hand) power supply, the insulation rate of the county's 10-kilovolt line should reach 45%, and the transformation of rural 10-kilovolt mains lines should be intensified, the power supply scope should be optimized, and the transformation of over-run-time lines should be basically completed; Gradually increase the oil-free rate of substations and circuit breakers, and promote the use of emerging energy-saving transformers such as S11 and S13 amorphous alloys to progressively High energy distribution transformer; reactive power optimization work to be carried out, select the appropriate mode of compensation, carry out the substation and power quality line of comprehensive management, solve the rural power low voltage problem.
“After this round of transformation, we hope that in 2012 and 2015, the reliability of power supply will reach 99.72% and 99.75% respectively, and the comprehensive voltage of rural power grids will reach 97.8% and 98.2%, respectively, and the comprehensive line loss rate of rural power grids at 35 kV and below. It dropped to 4.75% and 4.7% respectively," said Zhang Zhongle.
Behind the various projects, the support of different power equipment is needed. In the face of such a huge market for rural power transformation, Zhang Zhongle reminds power equipment manufacturers to be calm.
“In the face of such a rare opportunity, every equipment manufacturer will be excited. But it should also be noted that every opportunity for the upgrading of the rural network requires the enterprise to unswervingly carry out multi-disciplinary research and innovation and system integration. This requires companies to have a clear direction of the industry, to do something wrong, not to earn money, but also to control the pace of progress in the industry or business; to build their own potential, rely on technological innovation, improve their competitiveness At the same time, there must be a strong sense of crisis at any time to accurately grasp the latest market conditions." He said.
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