Multi-Stage Holomorphic Embedding Method for Calculating the Power-Voltage Curve




Wang, Bin
Liu, Chengxi
Sun, Kai

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Institute of Electrical and Electronics Engineers


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.


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continuation power flow, holomorphic embedding method, HEM, holomorphic error embedding method, multistage HEM, power-voltage curve


Wang, 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.2017.2711260


Electrical and Computer Engineering