Abstract
Power transformer fault diagnosis is the key technology of electric power system. Niche genetic algorithm (NGA) was introduced to optimize Adaptive-Learning-Rate-Momentum Back Propagation (BP) network. NGA -BP model was established and applied to power transformer fault diagnosis. Compared with BP network, NGA-BP network has a better performance on convergent speed and stability. The experimental results demonstrate that fault diagnosis precision of NGA- BP network is 90%, which is higher than BP network.
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