On February 5th, on the 2220th train from Qiqihar to Dalian, Cui Younan looked out of the window with his head. Outside the silver-covered window, there is a large windmill, and the white blades slowly rotate, reflecting a bright color unlike snow.
Cui Younan lives in Qiqihar and works in Shenyang. He goes back and forth several times a year. Along the way, he will see similar windmills in places like Jilin Songyuan, Siping, and Tieling in Liaoning, and they will always turn around the year.
These windmills are actually wind turbines. The windmill with the blades turning is a landscape in the eyes of passengers, but for grids and even electric power workers, it represents a company's efforts to promote the integration of wind power.
Strengthen management and promote wind power integration On January 18, the State Grid Corporation of China announced a set of data: By the end of 2010, the wind power grid-connected installed capacity in the company's operating area reached 28.26 million kilowatts, which has doubled in five consecutive years, and nine provinces and districts have achieved wind power. The grid connection capacity exceeds 1 million kilowatts. The annual output of wind power is 48.1 billion kWh, an increase of 87.2% year-on-year, and the average utilization hours of wind turbines in the entire network has reached 2,082 hours.
Behind the data is countless hard work. In order to support the development of wind power and large-scale consumption, the company continued to increase its efforts in power grid construction. At present, a total of 23,200 kilometers of wind power interconnection lines have been put into operation, with a total investment of 41.8 billion yuan. Among them, 1694 km of 750 kV lines, 2786 km of 500 kV lines, 475 km of 330 kV lines, 8494 km of 220 kV lines, and 9703 km of lines of 110 kV and below are built to send wind power to the substation ( There are 25 switching stations, and the boosted capacity is 4.225 million kVA. The timely follow-up of power grid construction ensures the timely integration of wind power projects.
The instability of wind power output determines the importance and difficulty of wind power dispatching management and grid-connected technology management work. Shu Yinyu, deputy general manager of the company, stated that while strengthening the construction of the power grid, the company also strengthened wind power dispatching operation management and grid-connected technology management, and improved the ability to accept wind power.
Strengthen wind power dispatching operation management, mainly reflected in the establishment of wind power real-time monitoring system, strengthen the professional management of wind power, and improve the accuracy of wind power forecasting in three aspects.
In order to effectively grasp the real-time operation status of wind power, the company requires each wind farm to establish a centralized monitoring system, and the provincial companies of each network have access to wind power operation information within the scope of regulation. At present, all wind farms have been included in real-time monitoring at all levels of scheduling, and the real-time monitoring and analysis of wind power operations has been initially realized.
In terms of professional management of wind power, the company tapped the potential of power grid peaking to maximize the capacity of the grid to accept wind power for the actual situation of the power grid. Relevant personages of North China Networking stated that by optimizing the operation mode of the power grid, the North China Power Grid will push the output of the non-heating units of the Beijing-Tianjin-Tangshan Power Grid to the operating limit, which will increase the transmission capacity of the West Inner Mongolia Power Grid from 1.95 million kilowatts to about 3 million kilowatts. Equivalent to helping Mondio consume 1.05 megawatts of wind power.
In 2008, China's first set of wind power forecasting system developed by China Electric Power Research Institute was put into demonstration operation at Jilin Electric Power Co., Ltd. Currently, the system has covered more than 12 million kilowatts of wind power installed capacity, and the forecast accuracy reached 85%, which is for wind power. Dispatch operation laid a solid foundation.
The company also strengthened the management of grid-connected technologies. The grid-connected standard system was gradually established and the inspection capability was greatly improved. In mid-2010, with the support of the National Energy Administration, the company invested 350 million yuan to build a national wind power technology and detection research center. The center has 8 complete wind turbine characteristics detection capabilities such as power characteristics, low voltage ride through, and anti-jamming capabilities, and the comprehensive performance index ranks first in the world. In addition to the company's participation in the development of "Wind Turbine Power Performance Test Standards" and "Wind Turbine Low Voltage Ride Through Test Procedures" and other standards, China's wind power industry continues to standardize and standardize development, which not only ensures the technical performance of grid-connected wind turbines, but also improves The security of the grid operation.
Intensifying research and leading the development of wind power to develop wind power is a big issue that requires the attention and promotion of the entire society. For any company, it is unrealistic to pursue “self-reliance†and only do the work related to itself. Judging from the practice in recent years, the company has also carried out a large number of important issues in addition to related work such as strengthening dispatching operation management and grid-connected technology management, and has done a good job of planning and technological innovation to lead the healthy development of wind power.
In 2009, the company organized 8 domestic authoritative research institutions including the State Council Research Office and the State Council Development Research Center to carry out the “State Grid Corporation of China to Promote Clean Energy Development Research†work, and proposed measures and policy recommendations to promote the development of clean energy in China; 2010 To participate in research on wind power access to the power grid and market acceptance organised by the National Energy Administration, systematically studying the various problems faced in the development of wind power in China, and proposing ideas for the healthy and scientific development of wind power in China. The study of these major issues has provided strong support for the government's decision-making.
To do a good job in power transmission planning and ensure the development of wind power bases for development and delivery are another important topic of the company’s efforts. China's wind power is mainly concentrated in the "Three North" and southeast coastal areas. The development scale of 80 million kilowatt-class wind power bases accounts for more than 80% of the country's total scale, with a high degree of concentration.
In accordance with the overall concept of “building a large base and integrating into a large power grid†and near-to- far and multi-phase construction, starting from 2009, the company launched transmission plans for wind power bases in Jiuquan of Gansu, Xinjiang, Hami, Hebei, Mengdong, and Jilin. From the results of the study, Mengxi Wind Power needs to be eliminated in Mengxi and the “Three Chinas†power grid; Mengdong Wind Power is accepted in Northeast Power Grid and “Three China†Power Grid; Jilin Wind Power is accepted in Northeast Power Grid; Gansu Wind Power is in Northwest Power Grid and “ Sanhua's power grid consumption; Xinjiang wind power is dissipated in the local power grid and the "Sanhua" power grid.
The company also vigorously carried out technological innovations and demonstrated the development of wind power. The company vigorously carried out research and development of new technologies and new products to promote the coordinated operation of wind power and power grids, and strengthened research and development from various aspects including unit control, wind farm control, wind power base control, and offshore wind power access, and comprehensively promoted the progress of wind power grid connection technology in China; The typical design of the electrical part of the wind farm, through the typical design of fan booster, booster station and access system scheme, guides the standardization and standardization of wind power design, promotes the application of new materials, new technologies and new processes, and promotes wind farms and power grids. The coordinated development.
With unremitting efforts and solid work, the company has made considerable progress in wind power planning, design, operation control, dispatch management, and technical standards. Shuyin Yin commented: “These work have enabled us to have a deeper understanding of the development laws and characteristics of wind power and have improved our ability to control wind power, laying a solid foundation for the further development of wind power in the future.â€
Cui Younan lives in Qiqihar and works in Shenyang. He goes back and forth several times a year. Along the way, he will see similar windmills in places like Jilin Songyuan, Siping, and Tieling in Liaoning, and they will always turn around the year.
These windmills are actually wind turbines. The windmill with the blades turning is a landscape in the eyes of passengers, but for grids and even electric power workers, it represents a company's efforts to promote the integration of wind power.
Strengthen management and promote wind power integration On January 18, the State Grid Corporation of China announced a set of data: By the end of 2010, the wind power grid-connected installed capacity in the company's operating area reached 28.26 million kilowatts, which has doubled in five consecutive years, and nine provinces and districts have achieved wind power. The grid connection capacity exceeds 1 million kilowatts. The annual output of wind power is 48.1 billion kWh, an increase of 87.2% year-on-year, and the average utilization hours of wind turbines in the entire network has reached 2,082 hours.
Behind the data is countless hard work. In order to support the development of wind power and large-scale consumption, the company continued to increase its efforts in power grid construction. At present, a total of 23,200 kilometers of wind power interconnection lines have been put into operation, with a total investment of 41.8 billion yuan. Among them, 1694 km of 750 kV lines, 2786 km of 500 kV lines, 475 km of 330 kV lines, 8494 km of 220 kV lines, and 9703 km of lines of 110 kV and below are built to send wind power to the substation ( There are 25 switching stations, and the boosted capacity is 4.225 million kVA. The timely follow-up of power grid construction ensures the timely integration of wind power projects.
The instability of wind power output determines the importance and difficulty of wind power dispatching management and grid-connected technology management work. Shu Yinyu, deputy general manager of the company, stated that while strengthening the construction of the power grid, the company also strengthened wind power dispatching operation management and grid-connected technology management, and improved the ability to accept wind power.
Strengthen wind power dispatching operation management, mainly reflected in the establishment of wind power real-time monitoring system, strengthen the professional management of wind power, and improve the accuracy of wind power forecasting in three aspects.
In order to effectively grasp the real-time operation status of wind power, the company requires each wind farm to establish a centralized monitoring system, and the provincial companies of each network have access to wind power operation information within the scope of regulation. At present, all wind farms have been included in real-time monitoring at all levels of scheduling, and the real-time monitoring and analysis of wind power operations has been initially realized.
In terms of professional management of wind power, the company tapped the potential of power grid peaking to maximize the capacity of the grid to accept wind power for the actual situation of the power grid. Relevant personages of North China Networking stated that by optimizing the operation mode of the power grid, the North China Power Grid will push the output of the non-heating units of the Beijing-Tianjin-Tangshan Power Grid to the operating limit, which will increase the transmission capacity of the West Inner Mongolia Power Grid from 1.95 million kilowatts to about 3 million kilowatts. Equivalent to helping Mondio consume 1.05 megawatts of wind power.
In 2008, China's first set of wind power forecasting system developed by China Electric Power Research Institute was put into demonstration operation at Jilin Electric Power Co., Ltd. Currently, the system has covered more than 12 million kilowatts of wind power installed capacity, and the forecast accuracy reached 85%, which is for wind power. Dispatch operation laid a solid foundation.
The company also strengthened the management of grid-connected technologies. The grid-connected standard system was gradually established and the inspection capability was greatly improved. In mid-2010, with the support of the National Energy Administration, the company invested 350 million yuan to build a national wind power technology and detection research center. The center has 8 complete wind turbine characteristics detection capabilities such as power characteristics, low voltage ride through, and anti-jamming capabilities, and the comprehensive performance index ranks first in the world. In addition to the company's participation in the development of "Wind Turbine Power Performance Test Standards" and "Wind Turbine Low Voltage Ride Through Test Procedures" and other standards, China's wind power industry continues to standardize and standardize development, which not only ensures the technical performance of grid-connected wind turbines, but also improves The security of the grid operation.
Intensifying research and leading the development of wind power to develop wind power is a big issue that requires the attention and promotion of the entire society. For any company, it is unrealistic to pursue “self-reliance†and only do the work related to itself. Judging from the practice in recent years, the company has also carried out a large number of important issues in addition to related work such as strengthening dispatching operation management and grid-connected technology management, and has done a good job of planning and technological innovation to lead the healthy development of wind power.
In 2009, the company organized 8 domestic authoritative research institutions including the State Council Research Office and the State Council Development Research Center to carry out the “State Grid Corporation of China to Promote Clean Energy Development Research†work, and proposed measures and policy recommendations to promote the development of clean energy in China; 2010 To participate in research on wind power access to the power grid and market acceptance organised by the National Energy Administration, systematically studying the various problems faced in the development of wind power in China, and proposing ideas for the healthy and scientific development of wind power in China. The study of these major issues has provided strong support for the government's decision-making.
To do a good job in power transmission planning and ensure the development of wind power bases for development and delivery are another important topic of the company’s efforts. China's wind power is mainly concentrated in the "Three North" and southeast coastal areas. The development scale of 80 million kilowatt-class wind power bases accounts for more than 80% of the country's total scale, with a high degree of concentration.
In accordance with the overall concept of “building a large base and integrating into a large power grid†and near-to- far and multi-phase construction, starting from 2009, the company launched transmission plans for wind power bases in Jiuquan of Gansu, Xinjiang, Hami, Hebei, Mengdong, and Jilin. From the results of the study, Mengxi Wind Power needs to be eliminated in Mengxi and the “Three Chinas†power grid; Mengdong Wind Power is accepted in Northeast Power Grid and “Three China†Power Grid; Jilin Wind Power is accepted in Northeast Power Grid; Gansu Wind Power is in Northwest Power Grid and “ Sanhua's power grid consumption; Xinjiang wind power is dissipated in the local power grid and the "Sanhua" power grid.
The company also vigorously carried out technological innovations and demonstrated the development of wind power. The company vigorously carried out research and development of new technologies and new products to promote the coordinated operation of wind power and power grids, and strengthened research and development from various aspects including unit control, wind farm control, wind power base control, and offshore wind power access, and comprehensively promoted the progress of wind power grid connection technology in China; The typical design of the electrical part of the wind farm, through the typical design of fan booster, booster station and access system scheme, guides the standardization and standardization of wind power design, promotes the application of new materials, new technologies and new processes, and promotes wind farms and power grids. The coordinated development.
With unremitting efforts and solid work, the company has made considerable progress in wind power planning, design, operation control, dispatch management, and technical standards. Shuyin Yin commented: “These work have enabled us to have a deeper understanding of the development laws and characteristics of wind power and have improved our ability to control wind power, laying a solid foundation for the further development of wind power in the future.â€
Single Output Switching Power Supply,LED Power Supply Co., Ltd. , http://www.nbpowersupply.com