Design And Realization Of Fault Record Analysis System For 35kV Substation Of An Electric Company

When a fault occurs or a disturbance occurs in the power grid,the fault recorder analysis system records the voltage,current and protective action of the power grid,and obtains a large number of valuable data for research.Through various state parameters of the power grid,the causes of accidents are analyzed and the Countermeasures for dealing with accidents are obtained.The stability and security of power grid are closely related to people's lives and property security.Fault recording analysis system can monitor the abnormal situation of power grid in time when the power grid is running,and ensure the stable operation of power system.Based on the analysis of the existing fault recorder systems at home and abroad,this paper chooses the fault recorder system of substation in the power supply area of a power supply branch company as the research object.Based on the front-end acquisition station,the middle control layer and the back-end data analysis layer,a three-tier deployment structure of substation fault recorder analysis system is designed.The UML method is used to model and analyze the actual needs of users,and the overall architecture and main functions of the system are designed.Its functions include five modules: system management,parameter setting,real-time monitoring,recording analysis and file processing.Finally,the realization process of the bottom program in the fault recorder analysis system is elaborated,and the concrete realization of the fault recorder analysis system is discussed by taking the two main functional modules of the fault recorder analysis and real-time monitoring as examples.Finally,a maintenance-free centralized control system for data access and information management of cross-platform fault recording and analysis system is developed.The problems of data transmission and storage of high-capacity recordings,as well as the analysis and statistics based on the recordings are mainly solved.The system is developed by C++ and QT,and tested under Windows operating system.The test results show that the fault recorder analysis system is suitable for the operation and maintenance of the power grid of the power supply company and meets the design scheme.The normal operation of the system after implementation not only improves the ability of substation fault analysis,but also reduces the workload of manual inspection,realizes the uninterrupted monitoring of substation.After the failure occurs,it provides an effective reference for technical personnel to analyze problems in time and formulate countermeasures...