中文摘要：

在基于受扰电压轨迹的暂态失稳判别方法的基础上，探讨了广域监测方案设计及暂态失稳门槛值设定方法，并进一步分析了所述方法在实际应用过程中的适用性与可行性。对IEEE39节点系统与南方电网实际系统进行了仿真研究，包括节点电压脆弱性分析、电压观测方案设计、不同故障下的暂态稳定性判别。结果表明，本文方法相比常规方法，能够更加快速而有效地识别系统暂态失稳，工程可实施性强，可用于不健全的广域量测环境。

英文摘要：

According to the transient instability detection method based on the perturbed voltage trajectories, methods for widearea monitoring scheme designing and instability threshold setting are discussed. Besides, the applicability and feasibility of the proposed method in the actual application process are analyzed. Numerical simulations are conducted for an IEEE 39-bus system and an actual power system of China Southern Power Grid, including the vulnerability analysis of bus voltage, voltage observation scheme design and transient stability detection under different fault conditions. Compared with conventional methods, the simulation results show that the proposed method can more effectively and quickly identify the transient instability of the system, and is easy to apply in projects. This method can be used for an incomplete wide-area measurement environment.