Research Of Fault Location In Smart Distribution Grid Based On WSNs Node

The development direction of power construction is intelligent power distribution network in the world,when experience blackouts to stop production besause of traditional distribution network failures could determine the failure reason sometimes but unable to locate the fault location,it caused heavy economic losses.Development of wireless sensor networks provides new directions for intelligent power network fault location.Because of its automatic network sensitivity,low power consumption,low cost,and high reliability advantage for wireless sensor networks,so that it is able to adapt to complex network architecture distribution network,positioning and analysis for precise positioning of smart distribution grid system fault.Researchers at home and abroad are increasingly applying WSNs on fault location of distribution network in intelligent study.Aiming at intelligent fault location for distribution network using wireless sensor network applications the fault location of distribution network to further study.This paper summarizes the characteristics of terminal equipmentof smart distribution grid power system structure and distribution,power distribution lines and communication structures,explains the requirements and analysis of communication,requirements of data communication and terminal equipment of distribution network in powersystem structure,establishing flexible communication architecturebased on intelligent power network communication for wireless sensor networks.It increases the validity and reliability of intelligent distribution network communication,secure smart grid communications architecture between nodes and compatible communication architecture for wireless sensor networks;adapted communication links demand;the real-time transmission of data,flexible response to sudden failure.Aiming at positioning precision lower,points cluster not are proposed for DV-hop algorithm has a algorithm to improved are value particles group algorithm(PSO)getting PDV-hop algorithm basedon DV-hop,keeping communications overhead and hardware cost increased of premise Xia to improve speed and displacement of particles group algorithm,it makes dynamic wireless sensor network again positioning cluster head node coordinates more close to real value,improving points cluster positioning of accuracy effectively,it improves rata of date transmission,classification and node of the cluster location Reasonablely.Aiming at the traditional PIT and APIT algorithm density of neighboring node number under the influence of adjacent node distribution per unit area is small,small numberof anchor nodes triangles,occurred Out-to-In and In-to-Out error.affecting the accuracy and leading to lower accuracy.On the premise,keeping the of cost and hardware is not increased,improveing RSSI location weight value,while maintaining high accuracy to determine the number to achieve the optimum range,reduce the number of iterations of the data.Through the use of an unknown node coordinates as the center anchor node triangle seeking to go out to the ball,determineing that the ball circle the unknown node coordinates,In determining the mark after each unknown node coordinates known anchors to improve the location node coverage.it improves the precision of positioning,which reduces the number of iterations.Last,through times simulation experiment results and compareing analysis,the improved Hou of PDV-hop algorithm and improved APIT algorithm positioning cluster head node coordinates again more close real value,improving points cluster positioning of accuracy Hou effectively,improved data of transmission rate,Enhanced the positioning accuracy and coverage of the node.The hardware and software platform for WSNs smart distribution power grid has been detailedly designed in this paper.design for the corresponding sensor node module,application the CC2530 and Zigbee technology,it has the advantages of low power consumption of microprocessors,it could achieve fault location,information transmission and other requirements in the complexenvironment completely.Applying positioning algorithm for WSNs hardware platform to establish model for temperature monitoring transmission,positioning and data transmission experiments,experimental results of sensor nodes in WSNs hardware smart distribution grid coordinates data transmission reliability,positioning accuracy have a significant effect.