Parallelization of the Fault Positions Method for Stocastic Assessment of Voltage Sags

In this paper, the parallelization of the Fault Positions Method for the stochastic assessment of voltage sags is presented. Using the GNU/Linux operating system, an algorithm was written in C programming language which exploits multi-thread programming by including functions defined by the POSIX threads header and library, in order to perform parallel calculations. A comparative analysis of the parallelized Fault Positions Method with respect to the traditional method is presented by analyzing a small 5-bus test system and the IEEE 118-bus test system. Results of case studies demonstrate the proper operation of the parallelized Fault Positions Method and the reduction in required computational time.