Patent ID: 6289716
Filing Date: 2001-09-18
Classification: G01N

Abstract:
The method of on-line assessment of transformer conditions comprising:periodically transferring a sample of gas in the transformer headspace to a gas analyzer,operating the gas analyzer to provide signals representing the amount of selected gases in the gas sample including at least hydrogen and acetylene,processing the output signal to provide a measure of the concentration of the selected gases in the gas sample,programming a programmable computer to 1) detect rapid changes in the measured concentration of acetylene and hydrogen and provide a danger output signal, and 2) to compare the varying concentrations of fault gases to the varying concentration of a reference gas as related to temperature, pressure and other variables, and provide output signals indicating normal or cautious transformer conditions,providing the programmable computer with the output signals of the selected gases whereby the computer can process the measured concentration and provide output signals representing the transformer conditions.