Method and system for detection of collector flashover
AssigneeGeneral Electric Company
InventorsDebasis Bal, Paul August Quail, Sudhanshu Rai, Larry Weldon Dill
Life of this patent
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Abstract
A system, method and computer program product for predicting collector flashover is disclosed. The method includes receiving a frame of measured data from a data acquisition system, fitting a statistical model to the measured data wherein the measured data includes a plurality of measured variables measured at multiple time instances. The statistical model and the measured data are used for estimating one or more parameters for the frame wherein the one or more parameters include at least one of field circuit impedance and field current noise. A flashover is predicted based, at least in part, upon the one or more estimated parameter for the frame.
Claims12
A method for predicting flashover of an electrical generator collector, the method comprising:
- buffering measured data corresponding to a plurality of measured variables measured at multiple discrete time instances over a determined time period to generate a frame of measured data using a generator monitoring unit, an exciter and control unit, or both the generator monitoring unit and the exciter and control unit;
- receiving the frame of measured data using a receiver module;
- fitting a statistical model to the frame of measured data by dividing the frame of measured data into a plurality of time windows and determining one or more coefficients of the statistical model using the measured data for each of the plurality of time windows using a statistics module;
- estimating one or more parameters for the frame based upon the measured data and the statistical model, wherein the one or more parameters comprise at least one of field circuit impedance and field current noise using an estimation module;
- and
- predicting a flashover condition of the electrical generator collector based, at least in part, upon the one or more estimated parameters for the frame using a flashover prediction module.
A system for predicting flashover of an electrical generator collector, the system comprising:
- a receiver module for receiving a frame of measured data corresponding to a plurality of measured variables, wherein the frame of measured data comprises buffered measured data corresponding to the plurality of measured variables measured at multiple discrete time instances over a determined time period;
- a statistics module for fitting a statistical model to the frame of measured data by dividing the frame of measured data into a plurality of time windows and determining one or more coefficients of the statistical model using the measured data for each of the plurality of time windows;
- an estimation module for estimating one or more parameters for the frame based upon the measured data and the statistical model, wherein the one or more parameters comprise at least one of field circuit impedance and field current noise;
- and
- a flashover prediction module for predicting a flashover condition of the electrical generator collector based, at least in part, upon the one or more estimated parameter for the frame.
A computer program product, comprising:
- a non-transitory computer readable medium encoded with computer-executable instructions for predicting collector flashover, wherein the computer-executable instructions, when executed, cause one or more processors to:
- buffer measured data corresponding to a plurality of measured variables measured at multiple discrete time instances over a determined time period to generate a frame of measured data;
- receive the frame of measured data;
- fit a statistical model to the frame of measured data by dividing the frame of measured data into a plurality of time windows and determining one or more coefficients of the statistical model using the measured data for each of the plurality of time windows;
- estimate one or more parameters for the frame based upon the measured data and the statistical model, wherein the one or more parameters comprise at least one of field circuit impedance and field current noise;
- and
- predict a flashover condition based, at least in part, upon the one or more estimated parameters for the frame.
Dependencies are inferred from the claim text.