Research On Economic Operation Technology Of Intelligent Power Supply And Distribution System

Many provinces in our country still exists serious "power shortage" problem,the contradiction between the supply of electricity and the demand of users is very serious.In the actual operation of the power supply and distribution system,because the transformer is in light load or no-load for a long time,the operation efficiency of the system is reduced,and the power consumption is increased.It is very important to cut the corresponding amount of transformers scientifically and reasonably at the appropriate time with the help of the load forecasting curve,which can maintain efficient and energy saving operation of power supply and distribution system,Therefore,based on the dual purpose of improving the energy efficiency of the grid and improving the economic efficiency of the power supply enterprises,this paper studies the switching control strategy of the transformer.The main work in the thesis includes:(1)Firstly,the economic operation mechanism of transformer and the method of economic operation interval division are discussed,based on this,the overall design scheme of the economic operation system of the power supply and distribution system is given,PLC programming software,MATLAB programming software,database software and configuration software selection,as well as the main functions are introduced in detail.(2)The economic operation control scheme of transformer based on load forecasting is given.Based on the similar daily selection algorithm,the load forecasting model of Elman neural network is discussed.Taking a property company’s power supply and distribution system as an example,it is shown that the prediction curve can well reflect the changing trend of actual load.(3)The economic operation control strategy of the transformer is given.Based on the fuzzy decision method,the fuzzy interval optimization model is discussed,and the switching time of the transformer is determined by calculating the comprehensive goodness of value of the interval.According to the critical interval method,the switching control strategy of the transformer is given.Through the above theoretical analysis,the PLC control system is designed,and the design flow of the control system is introduced in detail from two aspects of the system hardware and software.With the help of the load forecasting curve,the corresponding number of transformers will be automatically switched at the appropriate time.(4)Based on the above transformer economic operation control strategy,the simulation experiment platform of power supply and distribution system is established by Kingview 6.55,the configuration interface is introduced in detail,and the software platform of power supply and distribution system is analyzed.In this paper,the economic operation control strategy of transformer is discussed in detail.The research results not only improve the energy efficiency of power grid,but also improve the economic benefits of power supply enterprises.On the basis of ensuring the customer’s power demand,the loss in the operation of the transformer is reduced,and the problem that the transformer is in light load or no load for a long time is solved.The research conclusion of this paper has certainreference significance for the economic operation and management of power supply and distribution system.