基于全纯嵌入的电压稳定网络解耦方法
A Network Decoupling Method for Voltage Stability Analysis Based on Holomorphic Embedding
摘要：
提出了一种基于全纯嵌入的电压稳定网络解耦方法。使用所提出的HE方法与物理负载比例因子s，它开发了一组解耦的两个总线之间的目标总线和摆动总线的电路通道。相应地，在每个通道中引入名为σ（s）的复值虚拟指标，以确保准确性来评估预期操作条件的电压稳定性。然后，在每个节点的稳定裕度可以通过可视化其各自的σ（s）指标在σ平面上与电压崩溃的统一边界进行分析。此外，由于嵌入了物理载荷，可以解析地给出各节点的σ（s）随工况变化的轨迹。在IEEE 14节点电力系统上验证了所提网络解耦方法的有效性。
英文摘要：
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.
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