Design And Implementation Of Intelligent Power Distribution System Based On Modbus Bus Technology

With the development of computer technology,communication technology and controltechnology,the traditional industry control is experiencing an unprecedented revolution which isdirected towards network. As a result,the industry control network with fieldbus as therepresentative has achieved a great development.In the traditonal power distribution facilities,the funtions of power distribution,control,protection and surveillance are relized through such electric components as circuit breaker,contactor,relay,control appliance and elecric meter.The presence of so many traditionalcomponents makes it very inconventient to produce and repair these facilities.Moreover,thefacilities are operated mainly by hand,not by computer,which results in the failure of realizingcomplicated control logic.Consequently,we design and realize a new intelligent distributioncontrol system based on the fieldbus technology.The system is free from the managementconcept and more of traditional distribution facilities,and employs a large number of advancedintelligent circuit breaker.In addition,the system makes use of a very small number of ordinarycontrol facilities.Thus,it is a brand new network integrated facility with the true distributioncontrol.With fieldbus as the focus,the paper mainly does research into the application of Modbusprotocol to low-voltage network intelligent distribution system,which has a friendlyhuman-computer interface and is simple and quick to operate.On the base of further research on fieldbus technology,the thesis designs the intelligentdistribution control system based on fieldbus.The design canact as a foundation for the ultimaerealization of remote control,remote adjustment,remote conmunication and remote measure.The control system is an advanced case in intelligent power distribution control and ischaracteristic of low cost,convenient and effective operation.It is rated as the trend of distributionautomation with great theoretical significance and valut of popularization in production.