2020/03/27 by Qiupin Lai, Lai, Qiupin, Chengxi Liu +3
Computer Science · Engineering · #FOS: Electrical engineering #Microgrid Control and Optimization #Optimal Power Flow Distribution #Power System Optimization and Stability #Systems and Control (eess.SY) #cs.SY #eess.SY #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2003.12287
3 pages, 5 figures, 9 equations
arxiv created 2020/03/27 · openalex publication_date 2020/03/27 · arxiv updated 2020/03/30 · openalex created_date 2020/04/03 · openalex updated_date 2026/07/28
This paper proposes a network decoupling method based on Holomorphic Embedding (HE) for voltage stability analysis. Using the proposed HE method with a physical load scaling factor s, it develops a set of decoupled two-bus circuit channels between a target bus and the swing bus. Accordingly, a complex-valued virtual index, named σ(s), is introduced in each channel to assess the voltage stability of prospective operating conditions with ensured accuracy. Then the stability margin at each bus can be analyzed by visualizing its respective σ(s) index on the σ plane with a unified boundary of voltage collapse. Moreover, benefitted by the embedding with physical loading, the trajectory of σ(s) for each bus with the variation of operating conditions can be analytically given about the scaling factor s. The effectiveness of proposed network decoupling method is verified on the IEEE 14-bus power system.