The system adopts the basic principle of broad-spectrum gas chromatography analysis. The transformer oil passes through the oil-gas separator, and under the action of the built-in electromagnetic vibration exciter, the characteristic gas in the separated oil is introduced into the fault gas quantitative chamber through the gas collection function of the flat degassing membrane. The mixed fault gas in the quantitative chamber passes through the chromatographic column under the action of carrier gas, and the chromatographic column has different affinity for different gases, so the fault characteristic gas can be separated. The gas sensor detects the fault characteristic gases (H2, CO, CH4, C2H6, C2H4, C2H2) one by one according to the peak order, and converts the concentration characteristics of the fault gases into electrical signals. The data collector converts and stores electrical signals. The control computer obtains the original data of daily monitoring through the system communication network (RS485). The system analysis software analyzes and processes the data to calculate the composition and total hydrocarbon content of the fault gas respectively; The fault diagnosis expert system comprehensively analyzes and diagnoses the chromatographic data of transformer oil, and realizes on-line monitoring and analysis of transformer faults. The detection of micro-water in oil is realized by professional external micro-water online detection device, and the detection data is imported into the online monitoring database of oil chromatography to realize the comprehensive diagnosis of transformer operation state. Parameter index: detection period: the system defaults to 24 hours/time, and the minimum is 4 hours. Data storage is set by users: 20-year altitude: < < 4000m, pollution level: external insulation creepage ratio of 25mm/kv, and ice thickness of 20mm (when the wind speed is not more than 15m/s). Working environment temperature: -40℃ ~+80℃ Working relative humidity: 5-95% non-condensing data communication distance: 1200M (without repeater) Working power supply: AC 220v10%, 50Hz carrier gas: 99.999% nitrogen, pressure: 0. 17-640Hz, 1.5G peak-to-peak acceleration seismic resistance: acceleration: 10G peak-to-peak alarm setting: any alarm value can be set, and the alarm signal can be transmitted remotely.

Zhuhai Yuanming electric power equipment co., ltd

Wangjiameng 0756-3863033