Prediction method of transformer winding hot-spot temperature based on neural network
A technology of transformer winding and neural network is applied in the field of prediction of hot spot temperature of transformer winding, which can solve the problem of not being able to find the location of hot spot.
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[0043] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0044] Such as figure 1 As shown, a neural network-based prediction method for transformer winding hot spot temperature includes the following steps:
[0045] (1) Take the ambient temperature θ a , initial top oil temperature rise Δθ oi , top oil temperature θ o and the load factor K as the input data, the oil time constant τ 0 And the oil index x is the output data, and determine the number of nodes in the hidden layer, according to the formula Determine the number of nodes in the hidden layer, where n 1 is the number of hidden layer nodes, n is the number of input neurons, m is the number of output neurons, and a is a constant between 1 and 10. For the neural network formed by the selection of the number of hidden layer nodes, 10 Different training times, take the number of hidden layer nodes when the average training error is the sm...
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