220kV及以上变电站主变压器电气试验研究OA

The value and application fields of 220 kV and above substations are analyzed,and the role of the main trans-former is explained,and the significance of electrical monitoring is clarified.For the electrical monitoring of main transformers in substations of 220 kV and above,a complete technical plan has been built,covering the following aspects:dielectric loss moni-toring of transformer bushing,core ground current monitoring,dissolved gas in oil monitoring,sensor deployment and data acqui-sition,remote transmission and multi-machine communication,intelligent analysis and early warning,remote management and maintenance optimization,and system reliability guarantee.For the electrical monitoring test of main transformers in substations of 220 kV and above,the test process was carried out around the dielectric loss monitoring of transformer bushings and the moni-toring of core grounding current.The test results confirmed the effectiveness of the electrical test.