Power grid planning is an important part of power grid construction.A scientific and reasonable power grid planning plays a significant part in guiding the construction of power grid.Now most of the grid network of county-level power grids is relatively weaker due to the uneven development of power grid construction.The power supply capacity and power quality level are urgently needed to be improved in these areas.Therefore,it is necessary to have a better plan in the county-level city power grid so as to scientifically and rationally plan substation layout and power line corridors,ensuring the power quality and power supply capacity of local power grids.As an important county-level city under the jurisdiction of Qingyuan City,Guangdong Province,Lianzhou City has a number of high-voltage substation power supply limits in its central urban area.Some high-voltage power supply lines are erected along the main roads,and medium-voltage distribution network lines are equipped with unreasonable variable capacity,etc.The current conditions mentioned above have restricted the urban development of the central city and even the whole Lianzhou.Therefore,it is of great practical significance to study the urban power grid planning in Lianzhou and thus strengthen the power construction in the downtown area of Lianzhou.This paper aims to figure out better solutions to the current conditions mentioned above,with the planning and development of Lianzhou city in mind.On the one hand,a reasonable power grid planning should be put up to improve the utilization rate of power facilities construction based on the theoretical methods of load forecasting and power grid planning;On the other hand,it is suggested that the city should have a reasonable control of the land for 220 kV substation,110 kV substation and high-pressure corridor,and construct the main power channel of 10 kV medium-voltage distribution network.That is,in short,try to establish a city with safe,reliable and smart power grid with the help of advanced science and technology,by further studying and improving the wiring structure of Lianzhou urban power grid. |