A simplified approach to estimate maximum loading conditions in the load flow problem

A computationally efficient and simple approach to estimate maximum loading conditions in the load flow problem is described. These operating points are known to result in a number of undesirable phenomena such as the singularity of the Jacobian, solution bifurcations, and voltage collapse. The approach presented generates precise estimates of the maximum possible amount of load increase that the system can tolerate along a specified path, as well as the corresponding voltage vector. The method is simple and efficient since it is based primarily on conventional load flow solutions. Tests on several standard power networks confirm the accuracy and efficiency of the technique