In recent years, the demand for electricity in Zhejiang Province has continued to grow rapidly, and the province's electricity growth rate has been ranked among the highest in the country. The Zhejiang Provincial Government proposed that during the “12th Five-Year Plan†period, it will achieve an average annual growth of about 8% of Zhejiang's total GDP, and take the lead in fully building a well-off society that benefits the people of the province. The economic and social development situation has provided a rare opportunity for the development of Zhejiang Electric Power Company. It is expected that in 2015, the province's highest electricity load will reach 71.65 million kilowatts, and the electricity consumption will reach 418.2 billion kwh, with an average annual growth of 9.5% and 8.2%. .
In order to meet the needs of Zhejiang's economic and social development, Zhejiang companies have taken the scientific development as their theme, adhered to the "two changes" and remained unwavering. They insisted on the "three developments" and did not relax. They led the scientific development of the company and the power grid through innovation, accelerated the construction of a strong smart grid, and accelerated The “Three Sets and Five Majors†system has been established, and it will strive to use three years or so to build the “One Strong Three Excellent†modern company in the State Grid Corporation of China.
130 billion yuan to build a strong grid
With the deepening implementation of the new urbanization strategy in Zhejiang, the construction of metropolitan areas and urban agglomerations is accelerating, and the radiation capacity of regional central cities has been further enhanced. The power grids in Hangzhou, Jiahu, Xiaoshao, and Jinli, etc. have been under strain and the power supply pressure is increasing.
In order to allow more customers to use reliable high-quality power, Zhejiang Electric Power Company transformed the development mode of the power grid, increased the investment in power grids, and worked hard to solve the “weak†problem of UHV and distribution networks, and strived to build a first-rate international company in the next five years. China's leading provincial power grid. During the "12th Five-Year Plan" period, Zhejiang Electric Power Network has invested about 130 billion yuan in total investment. It plans to build 15 new 500 kV substations with capacity of 32.75 million kVA, 138 substations with 220 kV, capacity of 46.11 million kVA and 110 kV. There are 531 substations with a capacity of 65.41 million kVA.
The Zhejiang company will link up with the overall urban and rural planning of Zhejiang Province, integrate urban infrastructure construction, concentrate on corridors, optimize the layout, and strengthen the intensive construction of distribution networks. Strengthen the interconnection and mutual supply capability of distribution networks and further promote the "Lifeline" project. The 500-kv backbone network will be further improved and efforts will be made to solve the problem of insufficient power supply and mutual supply.
The UHV power grid in Zhejiang will form a backbone network with three new UHV exchange stations and two DC stations. The newly added capacity (conversion station) will be 33 million kVA and the line will be 1828 kilometers. To achieve the "three exchanges and two straight" distribution pattern, basically forming a 500 kV regional grid with UHV stations as the core.
By 2015, Zhejiang will form an ultra-high-voltage "three-cross and two-straight" layout and an exchange "T"-shaped backbone network that runs through the north and south, forming a "kou"-shaped double loop network in northern Zhejiang and a "daily" double loop network in the western part of southern Zhejiang. The "mesh"-shaped double ring network in the eastern part of southeastern Zhejiang realizes a strong main grid structure of hydrothermal power, mutual preparation of AC and DC, mutual supply between east and west, and intercommunication between north and south.
Grid realizes full intelligence
In order to meet the increasing demand for electricity, the Zhejiang company will build a strong smart grid with information, automation, and interactive features in power generation, transmission, substation, distribution, electricity, dispatch, and communications to achieve greater A range of energy and power resources are optimally configured to greatly increase the efficiency of power generation, transmission and use of electricity, and promote the development and utilization of renewable energy and energy conservation and emission reduction. During the “12th Five-Year Plan†period, the total investment of Zhejiang Power Grid’s intelligent planning is about 21 billion yuan.
The newly-built substations of Zhejiang Power Grid will all be constructed in accordance with the standards for smart substations. By the end of the “Twelfth Five-year Planâ€, the scale of smart substations in Zhejiang Province will reach 665, including 18 500-kV smart substations and 145 220-kV smart substations. KV smart substation 502. Completely built a condition monitoring system for power transmission and transformation equipment. The monitoring range covers all smart substations in the province and 50% of 500 kV lines, 30% of 220 kV lines, some 110 kV lines and submarine cables.
During the “Twelfth Five-Year Plan†period, the distribution automation system will be applied in Hangzhou and Ningbo urban areas, and the distribution automation system and distribution network control integration system will be developed in all other prefecture-level cities in the province and in the core areas of the counties in 10 developed counties. . In Hangzhou, Ningbo, and Wenzhou, pilot applications for distributed power access, microgrid, and energy storage technologies were developed.
By 2015, Zhejiang province will build 200 electric vehicle charging and discharging stations and widely distributed 1,500 charging piles, making it possible for electric vehicles to be widely used to replace gasoline and diesel energy consumption and reduce pollutant emissions. A provincial, 11 prefecture-level and 35 county-level smart grid dispatching technical support systems have been established to achieve the unified coordination of the three-level dispatching plans in the provinces and counties. Construction of standby dispatching control centers at provincial and Hangzhou and Ningbo sub-provincial cities.
The rural network is as stable and reliable as the urban network
To coordinate the development of urban and rural areas, the Zhejiang Provincial Party Committee and Provincial Government plan to cultivate 200 central towns. During the “12th Five-Year Plan†period, Zhejiang Province has strived to develop these central towns into the new main body of population concentration in the county seat, a new highland for industrial agglomeration, and functional integration. The new platform, the new carrier for factor intensive, and the development and reform of the central town are facing new historical opportunities.
To make Zhejiang rural areas enjoy stable and reliable power supply security like big cities, the Zhejiang company decided to co-ordinate the investment capacity of the company and the county power supply companies. During the “Twelfth Five-Year Plan†period, more than 10 billion yuan was allocated annually for the county and central urban power grids. Construction and renovation, high standards and advance construction, effectively enhance the power supply capacity of the county and central town power grids, improve the reliability of power supply, and provide safe and reliable power supply for the social and economic development of the center town.
The Zhejiang company proposed that the construction of the central town's power grid should shift from the previous “spread-bread†type of rural power grid reform to the construction of a moderately intensive rural power grid, and guide and advance the urbanization layout through the “intensive farm netâ€. In the construction of the central town power grid, Zhejiang company actively implements the development concept of “intensive rural networkâ€, analyzes and analyzes the characteristics of social and economic development in various power supply areas, grasps the development trend, proposes differentiated power supply solutions for different needs, and improves key areas. The construction standards of the power grid and the realization of the intensive development of the power grid.
In order to scientifically and standardly guide the construction of the central town power grid, strengthen the connection between the central town power grid and the main network, and meet the requirements of economic and social development, the Zhejiang company organized the “Zhejiang Central Town Power Grid Construction and Transformation Technical Guidelines†to guide Zhejiang. Construction and renovation of 110 kV and below power grids in the central town of the province. The newly promulgated technical guidelines are higher than the relevant standards for the construction of rural power grids in the power industry in terms of various technical standards. According to the guidelines, all central cities and towns in Zhejiang Province must support the construction of 110-kilovolt transformer substations. According to the requirements of the smart grid construction, the distribution network should be connected with each other and supply electricity to each other so as to improve the reliability of power supply and the quality of electric power.
In order to meet the needs of Zhejiang's economic and social development, Zhejiang companies have taken the scientific development as their theme, adhered to the "two changes" and remained unwavering. They insisted on the "three developments" and did not relax. They led the scientific development of the company and the power grid through innovation, accelerated the construction of a strong smart grid, and accelerated The “Three Sets and Five Majors†system has been established, and it will strive to use three years or so to build the “One Strong Three Excellent†modern company in the State Grid Corporation of China.
130 billion yuan to build a strong grid
With the deepening implementation of the new urbanization strategy in Zhejiang, the construction of metropolitan areas and urban agglomerations is accelerating, and the radiation capacity of regional central cities has been further enhanced. The power grids in Hangzhou, Jiahu, Xiaoshao, and Jinli, etc. have been under strain and the power supply pressure is increasing.
In order to allow more customers to use reliable high-quality power, Zhejiang Electric Power Company transformed the development mode of the power grid, increased the investment in power grids, and worked hard to solve the “weak†problem of UHV and distribution networks, and strived to build a first-rate international company in the next five years. China's leading provincial power grid. During the "12th Five-Year Plan" period, Zhejiang Electric Power Network has invested about 130 billion yuan in total investment. It plans to build 15 new 500 kV substations with capacity of 32.75 million kVA, 138 substations with 220 kV, capacity of 46.11 million kVA and 110 kV. There are 531 substations with a capacity of 65.41 million kVA.
The Zhejiang company will link up with the overall urban and rural planning of Zhejiang Province, integrate urban infrastructure construction, concentrate on corridors, optimize the layout, and strengthen the intensive construction of distribution networks. Strengthen the interconnection and mutual supply capability of distribution networks and further promote the "Lifeline" project. The 500-kv backbone network will be further improved and efforts will be made to solve the problem of insufficient power supply and mutual supply.
The UHV power grid in Zhejiang will form a backbone network with three new UHV exchange stations and two DC stations. The newly added capacity (conversion station) will be 33 million kVA and the line will be 1828 kilometers. To achieve the "three exchanges and two straight" distribution pattern, basically forming a 500 kV regional grid with UHV stations as the core.
By 2015, Zhejiang will form an ultra-high-voltage "three-cross and two-straight" layout and an exchange "T"-shaped backbone network that runs through the north and south, forming a "kou"-shaped double loop network in northern Zhejiang and a "daily" double loop network in the western part of southern Zhejiang. The "mesh"-shaped double ring network in the eastern part of southeastern Zhejiang realizes a strong main grid structure of hydrothermal power, mutual preparation of AC and DC, mutual supply between east and west, and intercommunication between north and south.
Grid realizes full intelligence
In order to meet the increasing demand for electricity, the Zhejiang company will build a strong smart grid with information, automation, and interactive features in power generation, transmission, substation, distribution, electricity, dispatch, and communications to achieve greater A range of energy and power resources are optimally configured to greatly increase the efficiency of power generation, transmission and use of electricity, and promote the development and utilization of renewable energy and energy conservation and emission reduction. During the “12th Five-Year Plan†period, the total investment of Zhejiang Power Grid’s intelligent planning is about 21 billion yuan.
The newly-built substations of Zhejiang Power Grid will all be constructed in accordance with the standards for smart substations. By the end of the “Twelfth Five-year Planâ€, the scale of smart substations in Zhejiang Province will reach 665, including 18 500-kV smart substations and 145 220-kV smart substations. KV smart substation 502. Completely built a condition monitoring system for power transmission and transformation equipment. The monitoring range covers all smart substations in the province and 50% of 500 kV lines, 30% of 220 kV lines, some 110 kV lines and submarine cables.
During the “Twelfth Five-Year Plan†period, the distribution automation system will be applied in Hangzhou and Ningbo urban areas, and the distribution automation system and distribution network control integration system will be developed in all other prefecture-level cities in the province and in the core areas of the counties in 10 developed counties. . In Hangzhou, Ningbo, and Wenzhou, pilot applications for distributed power access, microgrid, and energy storage technologies were developed.
By 2015, Zhejiang province will build 200 electric vehicle charging and discharging stations and widely distributed 1,500 charging piles, making it possible for electric vehicles to be widely used to replace gasoline and diesel energy consumption and reduce pollutant emissions. A provincial, 11 prefecture-level and 35 county-level smart grid dispatching technical support systems have been established to achieve the unified coordination of the three-level dispatching plans in the provinces and counties. Construction of standby dispatching control centers at provincial and Hangzhou and Ningbo sub-provincial cities.
The rural network is as stable and reliable as the urban network
To coordinate the development of urban and rural areas, the Zhejiang Provincial Party Committee and Provincial Government plan to cultivate 200 central towns. During the “12th Five-Year Plan†period, Zhejiang Province has strived to develop these central towns into the new main body of population concentration in the county seat, a new highland for industrial agglomeration, and functional integration. The new platform, the new carrier for factor intensive, and the development and reform of the central town are facing new historical opportunities.
To make Zhejiang rural areas enjoy stable and reliable power supply security like big cities, the Zhejiang company decided to co-ordinate the investment capacity of the company and the county power supply companies. During the “Twelfth Five-Year Plan†period, more than 10 billion yuan was allocated annually for the county and central urban power grids. Construction and renovation, high standards and advance construction, effectively enhance the power supply capacity of the county and central town power grids, improve the reliability of power supply, and provide safe and reliable power supply for the social and economic development of the center town.
The Zhejiang company proposed that the construction of the central town's power grid should shift from the previous “spread-bread†type of rural power grid reform to the construction of a moderately intensive rural power grid, and guide and advance the urbanization layout through the “intensive farm netâ€. In the construction of the central town power grid, Zhejiang company actively implements the development concept of “intensive rural networkâ€, analyzes and analyzes the characteristics of social and economic development in various power supply areas, grasps the development trend, proposes differentiated power supply solutions for different needs, and improves key areas. The construction standards of the power grid and the realization of the intensive development of the power grid.
In order to scientifically and standardly guide the construction of the central town power grid, strengthen the connection between the central town power grid and the main network, and meet the requirements of economic and social development, the Zhejiang company organized the “Zhejiang Central Town Power Grid Construction and Transformation Technical Guidelines†to guide Zhejiang. Construction and renovation of 110 kV and below power grids in the central town of the province. The newly promulgated technical guidelines are higher than the relevant standards for the construction of rural power grids in the power industry in terms of various technical standards. According to the guidelines, all central cities and towns in Zhejiang Province must support the construction of 110-kilovolt transformer substations. According to the requirements of the smart grid construction, the distribution network should be connected with each other and supply electricity to each other so as to improve the reliability of power supply and the quality of electric power.
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