基于受扰后平衡点延拓的在线暂态稳定控制策略稳控措施求解

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关键词：暂态稳定控制；鞍结分岔点；灵敏度分析；在线稳定控制中图分类号：TM712文献标志码：ADOI：10.7652/xjtuxb202509003文章编号：0253-987X（2025）09-0022-11

An Online Transient Stability Control Strategy Based on Post-Disturbance Equilibrium Point Continuation： Stability Control Measure Solution

LI Chongtao¹，ZHANG Jianxin²，HE Jingjie¹，LIU Yuming³， LI Shiyang³，GAO Qin²，DUAN Chao1 （1.School of Electrical Engineering，Xi'an Jiaotong University，Xi'an 71oo49，China； 2.Power Dispatching and Control Center，China Southern Power Grid，Guangzhou 510663，China; 3.Electric Power Research Institute，China Southern Power Grid，Guangzhou 51O663，China）

Abstract： To address transient instability in power systems following disturbances， a novel control strategy based on the construction and continuation of post-disturbance equilibrium points is proposed. First，a mathematical model is established to solve for the proposed equilibrium point， which is then constructed and extended along the direction of disturbance. A three-stage control solution process is introduced，which involves solving for the saddle-node bifurcation point， extending the equilibrium point，and validating the control strategy. Furthermore， sensitivity analysis is employed to establish an analytical relationship between the extended equilibrium points and control parameters， optimizing the determination of control strategies. Finally， simulations based on the IEEE 39-bus standard test case and provincial-level actual power grid case are conducted for validation. The results demonstrate that the proposed control strategy effectively enhances the stability margin of the system following disturbances. Compared to traditional control strategies，the proposed strategy offers an analytical basis for control，enabling rapid and precise determination of the direction and magnitude of control parameter adjustments， thus achieving higher computational efficiency and accuracy. This study provides a solution for online emergency control that combines both analytical and reliable features.

Keywords： transient stability control; saddle-node bifurcation; sensitivity analysis；online stability control

电力系统安全稳定控制可依据时间尺度和控制目标划分为4个层级：预防控制、紧急控制、恢复控制和校正控制。（剩余17944字）