ABSTRACT
At present, the fuzzy load flow calculation’s main mathematical theory is based on the Zadeh’s fuzzy set theory[3]. There are many fuzzy load flow calculations’ methods built on it, and the most common is the incremental method[4-6]. The earliest use of fuzzy theory to solve the problem is in the literature[1]. The active power flow is represented by DC power flow while the reactive power flow is represented by AC power flow using the PQ decomposition method. It just uses the fuzzy arithmetic rules for solving equations for only one time but it has some limitations. In the literature[7], generator output and load forecast uncertainty was described by trapezoidal fuzzy number. It is a good way to solve the AC power flow with a central value plus fuzzy incremental number.
