Research On Distribution Network Planning Of Yinxi Industrial Park Based On Power Flow Checking

Distribution network planning,grid structure,power supply radius is reasonable,as well as the contact rate,transfer load capacity,etc.,fundamentally play a decisive role in the reliability of power supply.To establish the reliability for the target concept,push down analysis of key points of influencing the reliability of the goal of ascension,through new construction,renovation,moderate contact,multi segment,to realize the optimization of distribution network planning is the main means of distribution automation in the modern industrial park of distribution network.In the framework of the study of power distribution planning and grid planning of high and medium voltage distribution network in Industrial Park,this paper proposes a power distribution network construction scheme based on power flow checking.The main contents of this thesis include: prediction of short-term and long-term load distribution using load density method combined with short-term loading;the main technical principles of the medium voltage distribution network,the main technical principle of the power grid structure,the structure of medium voltage distribution network,typical wiring mode and the mode of district power supply are put forward;according to the load forecasting results,calculate the voltage capacity demand of each voltage level,optimize transformer substation location and power supply range,and design the substation planning and grid planning of 110 k V voltage level,describe the grid frame and connection form of 10 k V voltage class in detail;the Simulink simulation model is built by Matlab,the power flow calculation and checking are carried out,and the improvement scheme is put forward for medium voltage plan grid.As can be seen,the distribution network construction plan make the connection ability of the grid is strong,the load transfer ratio is high,and the system adjustment is flexible after adopting of power flow checking and optimization.This paper also evaluated the feasibility and rationality of the planning scheme in terms of technology and economy from two aspects of planning effectiveness analysis and financial evaluation.After the power flow checking and improvement of the grid,it can effectively solve the typical problems of 10 k V distribution network due to uneven load distribution,resulting in heavy 10 k V overload in some areas and the problems of distribution network such as waste of resources caused by light load and idle in 10 k V area.This method can improve power supply reliability,equipment utilization and safety reliability,reduces the power failure time.It also can improve the comprehensive evaluation index of the power grid,the investment income ratio and the operation economy,and has very strong popularization value.