Power grid fault prediction method
A power grid fault and prediction method technology, applied in prediction, biological neural network model, chaotic model, etc., can solve problems such as slow convergence speed and falling into local optimum
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[0038] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0039] like figure 1 Shown is a flow chart of a grid failure prediction method provided by the present invention:
[0040] Step 1, according to the input and output fault samples of the BP neural network system, its network structure is clarified.
[0041] The present invention adopts 3 layers of BP network structure, such as figure 2 shown. It consists of input layer X, hidden layer Y and output layer O. Nodes are x i 、y k , o j . x i with y k The weight between is ωik , the threshold value of neuron k in the hidden layer is θ k ;y k and o j The weight between is ω kj , the threshold value of neuron j in the output layer is θ j ,. The characteristics of the BP network structure are: neurons in each layer are only fully connected with neurons in adjacent layers, there is no connection between neurons in the same layer, and there...
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