Load modelling in static voltage stability indices calculation

This paper is concerned with load modelling for static voltage stability in dices calculation. Static voltage stability is closely related to the maxim um active and reactive power flow a network can transmit to load or from ge nerator. A two-bus system is used to show that the assessment index may or may not indicate the maximum depending on the load model. A real system is used to show that results may be different, even leading to opposite assess ment conclusions. it is concluded that load model is to be excluded in the calculation of static indices for voltage stability. It is pointed out that static load models are to be included in the (static) power-flow problem. In the same sense, dynamic load models are also to be included in (dynamic) voltage stability studies.