Method for predicting radio disturbance of electric transmission line by using improved BP (back propagation) neural network
A BP neural network and radio interference technology, which is applied in forecasting, instrumentation, data processing applications, etc., can solve problems such as large prediction errors
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[0110] Such as Figure 1-2 As shown, the inventive method of this example is: obtain the factors that have influence on the radio interference Y of the transmission line as input data, including: voltage X 1 , current X 2 , wire diameter X 3 , wire section X 4 , split number X 5 , Splitting distance X 6 , soil resistivity X 7 , wire-to-ground distance X 8 , The distance between the wire and the measuring point X 9 , temperature X 10 , Humidity X 11 , air pressure X 12 , altitude X 13 ;
[0111] The input data contains 13 neurons, and the order of magnitude differs greatly. In order to ensure the equal status of each factor and speed up the convergence speed, the normalized preprocessing method is used to preprocess the input data and normalize the data to [-1 ,1] in the interval.
[0112] 1. Improved simulated annealing algorithm
[0113] Improved annealing process steps:
[0114] 1) given temperature t 0 , the initial state S is randomly generated, and the ini...
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