Using Artificial Neural Network Algorithm for Voltage Stability Improvement

This paper presents an application of Artificial Neural Network (ANN) algorithm for improving power system voltage stability. The training data is obtained by solving several normal and abnormal conditions using the Linear Programming technique. The selected objective function gives minimum deviation of the reactive power control variables, which leads to the maximization of minimum Eigen value of load flow Jacobian. The considered reactive power control variables are switchable VAR compensators, OLTC transformers and excitation of generators. The method has been implemented on a modified IEEE 30-bus test system. The results obtain from the test clearly show that the trained neural network is capable of improving the voltage stability in power system with a high level of precision and speed.

Authors:

• Omid Borazjani
• Mahmoud Roosta
• Khodakhast Isapour
• Ali Reza Rajabi

Keywords:

• Artificial Neural Network (ANN)
• Load Flow
• Voltage Stability
• Power Systems.

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