The stability index is a function of real & reactive power injected at that node as well as of node voltage. The report presents stability analysis of radial distribution networks. Two voltage stability indexes are used for identifying the node, which is most sensitive to voltage collapse. Therefore to calculate node voltages for varying operating conditions a simple load flow technique for solving radial distribution networks is used. This method involves only the evaluation of a simple algebraic expression of voltage magnitudes and no trigonometric functions as opposed to the standard load flow case. After load flow study, voltage at all nodes is known. The node, at which stability index is minimum, is more sensitive to voltage collapse

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Radial Distribution Networks voltage Stability Analysis