Research On Modeling And Simulation Of Building Power Supply And Distribution System

At present,it is relatively small that the construction of the power supply and distribution system simulation research.Through the Simulink simulation environment research building power supply distribution system is propitious to the more clear analysis system each part of the operation state,to the optimization system design and to the expansion system design new mentality and method.First of all,this paper analyzes the load type and load capacity of the building which is a thirty story apartment building and calculates the normal current reactive power compensation,short circuit current and so on.According to the calculation and analysis results,using AutoCAD software to draw the distribution line diagram,high voltage distribution system diagram,low voltage distribution system diagram.Then,this paper briefly analyzes the simulation module of the common power supply and distribution system in Simulink simulation environment.Because of the deficiency of the circuit breaker module in Simulink,the new circuit breaker module is designed for the first time according to the protection characteristic of the actual circuit breaker.The electromagnetic characteristic parameters of the transformer are calculated.The transformer model is set up according to the parameters.Four kinds of short circuit conditions at the high and low side of the transformer are simulated.The simulation results are in agreement with the calculated results.The simulation model of building distribution system is built,and the effect of load switching on the power distribution system is analyzed in the first time.Then,in the Simulink simulation environment for the first time to build a transformer,short circuit,electrical load and so on,to the actual construction of power distribution system as the model of a more perfect simulation model for power distribution system.This model can be used in the experiment of the teaching of building power supply and distribution,but also can be used as a reference for the design of building power supply and distribution system.This paper analyzes the function of lightning current generator and surge protector.In this paper,a lightning current generator and a simplified Zinc Oxide surge protector model are built in the Simulink simulation environment.This paper analyzes the lightning stroke process of power supply and distribution system..