Gas chromatograph techniques for on-line testing of transformer faults

摘要: A gas chromatograph measures the concentration levels of fault gases contained in within a headspace above electrical insulating oil supply power transformer. An on-line detection system involves samples taken from transformers at utility site sequence with automatically controlled timer valves which open to draw sample each transformer and then transfer directly single chromatograph. The includes an integrator calculates level sample. resulting data are fed computer programmed partition function based on Henry's Law convert oil. This produces analysis used provide early warning specific problems correlated to, indicative detected by excessive dissolved identified particular faults. invention avoids costly time consuming prior art techniques extracting independent operation before can be measured.