Wang, BinLiu, ChengxiSun, Kai2023-06-262023-06-262018-01Wang, B., Liu, C., & Sun, K. (2018). Multi-Stage Holomorphic Embedding Method for Calculating the Power-Voltage Curve. IEEE Transactions on Power Systems, 33(1), 1127-1129. doi:10.1109/TPWRS.2017.27112601558-0679https://doi.org/10.1109/TPWRS.2017.2711260https://hdl.handle.net/20.500.12588/1933This version is the accepted manuscript. See final published version at https://doi.org/10.1109/TPWRS.2017.2711260. © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.The recently proposed non-iterative load flow method, called the holomorphic embedding method, may encounter the precision issue, i.e., the nontrivial round-off errors caused by the limited digits used in computing the power-voltage (P-V) curve for a heavily loaded power system. This letter proposes a multi-stage scheme to solve such a precision issue and calculate an accurate P-V curve. The scheme is verified on the New England 39-bus power system and benchmarked with the result from the traditional continuation power flow method.en-UScontinuation power flowholomorphic embedding methodHEMholomorphic error embedding methodmultistage HEMpower-voltage curveArticle