Distribution transformer data acquisition anomaly discrimination method based on multi-criterion fusion
A data anomaly, multi-criteria technology, applied in neural learning methods, character and pattern recognition, instruments, etc., can solve the problems of low real-time performance, low efficiency, high difficulty, etc., to reduce inefficiency and incompleteness, generalization. powerful effect
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[0174] In the embodiment of the present invention, based on the current, voltage, and active power data collected by the metering device in normal operation, random noise and interference of different degrees are added to the original data to form abnormal points. The above four models are used to test the interference and noise to check the accuracy. . In the test, the final outlier detection result is the intersection of the four model detection results. By setting random errors of different degrees, it is tested whether the above four models can effectively detect these outliers, so as to verify the effectiveness of the method. details as follows:
[0175] 1) Test 1: Select the meter numbered 15661, and the time range is from May 3 to May 31, 2017, a total of 2785 points. Among them, the average voltage of phase A is 228.891V, the maximum value is 232.8V, and the minimum value is 221.9V. Randomly generate normally distributed errors with mean 0 and standard deviation 6 (p...
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