KOHONEN NEURAL-NETWORK-BASED APPROACH TO VOLTAGE WEAK BUSES AREAS IDENTIFICATION/

The paper presents a neural network based method for the identificatio n of voltage-weak buses/areas. By using power flow analysis and the si ngular value decomposition method, a Kohonen neural network is trained to cluster/rank buses in terms of voltage stability. Special emphasis is placed on the selection of input information and analysis of the n eural network output results. The generalisation capability of the Koh onen network under various operating conditions has been tested on a n umber of systems. The results obtained for the IEEE 30-bus test system are very encouraging.