부산대학교 도서관

The holomorphic embedding (HE) method is a novel recursive method for power flow analysis. Using the fixed flat start, the HE guarantees to yield the high-voltage solution and provides unequivocal signals if no solution exists. The fast and flexible HE (FFHE) method is adaptive with flexible initial values. However, the FFHE cannot start from arbitrary initial values because it is not globally convergent. This paper studies the convergence performance of the FFHE and finds their regularity. To further improve the practicality of this method, this paper finds a numerically common domain of convergence for cases with different scales, ranging from 2 to 2383 buses, using the FFHE. The proposed common domain of initial values is applicable for a variety of cases using FFHE.