The Development Andapplication Of500kV Transformer Online Monitoring System Of Inner Mongolia

The realization of on-line monitoring of power system equipment， the equipmentoperation situation early monitoring and early warning，material resources and time costis very high， its sensitivity and effectiveness is obviously insufficient， and highpressure equipment in case of sudden accident，direct and indirect losses is great. Onlinemonitoring and diagnosis of high voltage electrical equipment in health status， canbetter adapt to the development of national economy， the reform of electric powersystem in depth and power users on the reliability of power supply， the economic andsocial benefits will be enormous.Power system main equipment online monitoring development. In view of the500kV transformer substation online monitoring，for equipment operation reliability andeconomy， develop a set of online monitoring device of transformer.Transformer on-line monitoring system developed by the author includingtransformer online monitoring， casing online monitoring and core ground monitoringonline. The principle of oil chromatographic on-line monitoring applications is， bydissolved gas monitoring in oil gas chromatography， based on parameters related toinformation， analysis and judgment of the internal fault of transformer bushing;applying the principle of on-line monitoring system， through the bushing wear wirelesssynchronous current lead wire of the sensor， the modern theory of digital signalprocessing in software，through the detection of transformer core grounding current，determine the core grounding state..Online monitoring device for transformer in operation in a Inner Mongolia500kVsubstation， the actual monitoring results， equipment operation， and obtain themonitoring data complete，according to the test data of analysis function also shows thatthe analysis system can be stable operation.Power equipment on-line monitoring system for the power sector to improve thesuccessful application of the automation degree， improve the working conditions oftesting personnel， improve the detection level and quality， has the vital significance toreduce the cost of testing， has great social benefit， economic benefit and safetybenefits， market promotion and application prospects.