SYSTEM AND METHOD FOR DETECTION OF OFFSET BASE VALUE rotor eccentricity

摘要

1. A method of determining the eccentricity of the rotor (30) in a turbine (10) comprising: collecting (56) data (18) of the rotor eccentricity of the sensors for a plurality of operations (54) start; ! establishing a base value (84) of the eccentricity, using the data from the sensors, corresponding to the selected start-up operation; ! determining (90) the eccentricity value using the filtered data from the sensors for each of the plurality of starting operations following the start of the selected operation; ! determining (98) rotor eccentricity difference between the base value and each of the eccentricity of the eccentricity values ​​for a plurality of starting operations following the start of the selected operation; and! providing information (92, 94, 96, 98, 100, 102, 104, 112) on the state of eccentricity of the rotor based on the difference of the eccentricity of the rotor. ! 2. The method of claim 1, further comprising filtering (72, 76) data from the sensors to select data from the sensors, corresponding to starting operations and to use only the selected data from the sensors to determine the eccentricity values. ! 3. The method of claim 1, wherein the provision of information about the state of eccentricity of the rotor includes providing information about the change trend (49) of the rotor eccentricity difference over a time period of at least one year. ! 4. The method of claim 1, further comprising an exception (82) of the process of determining the values ​​of the eccentricity data from sensors having a rate of change greater than a predetermined limit during the starting period. ! 5. The method of claim 1, wherein the determination of the eccentricity value includes determining a mean value (68) for data from the sensors during the starting period, and