It is reported that the 13th Five-Year Plan for the development of energy in Dalian has been released. During the 12th Five-Year Plan period, the layout and construction of major energy projects in the city have progressed smoothly. Among them, the coordinated development of power grids at all levels will be realized, and a strong smart grid will be built. It is connected to the central Liaoning power grid via three channels and six 500-kV lines. The Hongyanhe Nuclear Power Station and the Zhuanghe Jianshan Nuclear Power Plant are supported by powerful power sources. The 500 kV strong power grid is sent in and out; the 220 kV grid is 500. The kilovolt substation realizes the division operation as the core and forms the grid structure of the secondary transmission network.
In order to simplify the "66 kV grid grid, improve the medium and low voltage distribution network" as the core of the planning, focus on solving the "net frame weak" problem of the distribution network; with the principle of "advance construction, far and near integration, preemption and distribution", keep the near-term construction Coordinate with the long-term planning; with the goal of “reasonable access ratio of each voltage level, reasonable proportion of various power supply configurations, and reasonable distribution of power flow in the gridâ€, guide the development of power supply and power grid; “Power grid planning is oriented to urban development power demand†The urban planning comprehensively includes the power grid planning as the basic concept to realize the coordinated development of urban development and power grid; the principle of “gradual upgrading of existing power grids and the appropriate advance construction of new power grids†will be adopted to finally build a strong and unified intelligent power grid.
In order to solve the problems of increased power load, local neck necking and partial equipment overload and overload, and improve equipment and equipment level, we plan to put into operation 67 projects such as Gangxing Road 66 kV substation and Yuhua 220 kV substation 66 kV network. The 66 kV new construction and renovation project has a new substation capacity of 1962 MVA, and the new line length is 614.4 km, with a total investment of about 3.6 billion yuan.
Through five years of power grid construction, the grid of 66 kilovolt grids in the region will be more clear, and the power supply capacity and power supply quality of the distribution network will be significantly improved. Through the networking project and the network frame improvement project, the 66 kV station will be strengthened and the substation will be upgraded. Supporting capacity; transforming and replacing substation equipment that has been running for a long time and severely aging, avoiding potential safety hazards and affecting the normal operation of the power grid; expanding the substation that cannot meet the load increase, and improving the power supply capacity of the 66 kV substation The N-1 pass rate requirement is met.
By the end of the “Thirteenth Five-Year Plan†period, the coordinated development of power grids at all levels will be achieved, laying a solid foundation for the construction and development of smart grids, and thus achieving the goal of reliable, safe, economical, efficient, environmentally friendly and safe use of the power grid.
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