Application Research Of Backup Power Supply For Distribution Automation Terminal

Distribution automation is based on a grid and equipment,with the distribution automation system as the core,comprehensive use of various communication methods to realize the monitoring and control of distribution network,and through the integration of information with related application systems,realize the scientific management of distribution network.Self healing is the basic feature of intelligent distribution network.The self-healing of distribution line means that the accident location can be completed automatically when the distribution line is broken,and the automatic isolation of accident isolation and non accident interval can be automatically completed without the need of artificial intervention.This paper first introduces the basic concept of distribution automation,after that,the application of backup power supply in distribution automation terminal is introduced.At present,lead-acid batteries are usually used as backup power sources.On this basis,in view of the distribution automation terminal after the external power loss needs to be a reliable backup power supply,to maintain the work to complete the fault detection,fault handling and a series of functions,put forward the application research of reliable distribution terminal backup power supply.Clear design ideas,through research and comparison,from the four aspects of power generating unit and a conversion unit,the output unit and the whole assembly,detailed selection,analysis,formulate corresponding countermeasures and organization implementation,has been successfully developed to single crystal solar panels for power generation unit,lithium ion battery energy storage,the stable output voltage of DC24 V.Can the solar power for the continuous power distribution terminal.The application research of solar power distribution terminal backup power,successfully solved the PT terminal equipment failure,battery power will be offline,not isolation self-healing problem for the fault line,which greatly improves the application level of distribution automation,improve the reliability of power supply,and ensure the safe and reliable operation of the power grid.