US 12,442,811 B2
Analysis of a gas dissolved in an insulating medium of a high-voltage device
Marcell Klinkert, Mainz (DE); and Patrick Ruoff, Karlsruhe (DE)
Assigned to MASCHINENFABRIK REINHAUSEN GMBH, Regensburg (DE)
Appl. No. 17/272,679
Filed by Maschinenfabrik Reinhausen GmbH, Regensburg (DE)
PCT Filed Sep. 4, 2019, PCT No. PCT/EP2019/073589
§ 371(c)(1), (2) Date Mar. 2, 2021,
PCT Pub. No. WO2020/049049, PCT Pub. Date Mar. 12, 2020.
Claims priority of application No. 10 2018 121 647.5 (DE), filed on Sep. 5, 2018.
Prior Publication US 2021/0341456 A1, Nov. 4, 2021
Int. Cl. G01N 33/28 (2006.01); G01N 1/22 (2006.01)
CPC G01N 33/2841 (2013.01) [G01N 1/2226 (2013.01); G01N 2001/2241 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A method for analysing a gas dissolved in an insulating medium of a high-voltage device, the method comprising:
transferring the dissolved gas by an analysis device into a gas phase to obtain an analysis gas mixture;
transporting the analysis gas mixture to an analysis sensor of the analysis device;
generating a sensor signal as an output signal of the analysis sensor as a function of a composition of the analysis gas mixture, wherein the composition of the analysis gas mixture corresponds to a concentration of a gas converted into a gas phase in the analysis gas mixture;
determining a first intermediate value based on the sensor signal, which depends on the concentration of the gas converted into the gas phase in the analysis gas mixture, and a first disturbance value and a second disturbance value based on a first regression model, where the first intermediate value is a concentration of the gas converted into the gas phase influenced by the first disturbance value and the second disturbance value, and the first disturbance value comprises a temperature and a moisture content of an environment of the analysis sensor and the second disturbance value comprise a flow velocity of the insulating medium;
determining a second intermediate value based on the first intermediate value and at least one specific value of the analysis device using a second regression model, wherein the at least one specific value of the analysis device comprises a property of the analysis sensor or the analysis device; and
determining a value for a concentration of the dissolved gas in the insulating medium based on the second intermediate value.