The Design And Implementation Of Oil-immersed Transformer On-line Monitoring And Fault Diagnosis System Based On GIS

Oil-immersed transformer isone of the most important power equipmentamong the electric transport and scheduling management. The operating state of transformer is a matter of the daily production in enterprise and living of the people, the stability and safety level will directly influence the national economic construction.As the city scale expands unceasingly, number of power transformer risefast, the traditional artificial periodic testing strategy cannot meet the practical requirement of electricity daily monitoring and management. At the same time, because of Kunming in Yunnan province is located in the plateau, is covered by mountain in many area, and the geographical environment is relatively bad. So a lot of transformersare located in the remote mountain area, as a result higher diagnosis precision monitoring technology are needed.Based on this, new requirements for transformer on-line monitoring system are puts forward for:1. To be able topredict existinglatent faults within the transformer early with higher diagnosis accuracy;2. To be able to quickly pass prediction and diagnosis information about the geographic information of transformer with latent faultto the monitoring center.In order to solve these two problems, the main work is as follows:First of all,based on the problemof transformer monitoring and management in Kunming Dongchuanadministration of power supply, we analyzed the demands of the system monitoring and management personnel and maintenance personnel for transformer management, and get the functional requirements of system administrator on management of personnel for monitoring system, equipment management, log and report query, permissionsdistribution and others; the function requirement of monitoring staff for basic parameter monitoring, the DGA data monitoring and others; function requirements of maintenance personnel for location of fault diagnosis, fault type, fault maintenance record registration information and others;In addition, we also analyzed thenon-functional requirements about performance of the system, quality and the environment the equipment is located.Then, based on the system demand analysis, we developed and designed transformer monitoring and fault diagnosis system adopting C/S structure, using C# language based on the Winform framework. And then, do function design according to the requirements:in order to improve precision of on-line monitoring system for fault diagnosis, we designed and put forward comprehensive transformer faults diagnosis NRS-RVM model.In order to quickly locate the transformer with growing problem, we designedfunctions onmonitoringgeographical location of transformer on-line based on GIS; In order to ensure the efficiency and quality of communication, GPRS are chosen to be tools for the online communication and transporting, then the monitoring data message could be passed in turn.Finally, we implemented the function for system administrator, monitor staff and fault maintenance staff. The whole project has reached the expected goal.