| Complete switchgear is the operation of the key equipment in power system,it can carry on the removal of the fault line,invest or exit for normal lines,the protection of the safe operation of the power grid plays an important role,and its status is normal or not directly affect the reliable operation of power grid.Therefore,the complete switch equipment state monitoring methods and techniques for in-depth study to achieve scientific maintenance,is of great significance for power system reliability.According to the actual production needs,in order to achieve the set of switch equipment status online monitoring,the complete switchgear mechanical properties,thermal properties and insulation properties of on-line condition monitoring,analysis and diagnosis based on the analysis of the demand,on the basis of IEC61850 standard to design a kind of on-line monitoring system for distribution network switchgear,for distribution network equipment operation maintenance to provide effective reference basis,greatly reduce the burden of maintenance personnel,improve the distribution network automation assets management level.Including the specific research work:(1)In view of the low efficiency of traditional condition monitoring IED,distribution network platform based on embedded hierarchical architecture,we design a new type of state monitoring IED,implements the in situ analysis of condition monitoring and diagnosis function.(2)In view of the traditional state monitoring system module isolated situation,based on the requirement of international standard IEC61850,a condition monitoring system is designed and the distribution automation system,to achieve seamless convergence condition monitoring IED and the information interaction between the DTU.(3)Design for traditional on-line monitoring function is too single,thesis comprehensive diagnosis system to realize the mechanical characteristics of the state diagnosis,cable head overheat diagnosis,long-life electrical diagnosis,monitoring and analysis of partial discharge,have alarm information,query,print and other functions.(4)Design and complete set of switch equipment state on-line monitoring system,in practice and meet the design requirements,to meet the actual production medium a switch device status online monitoring requirements... |
