A Comprehensive Approach to Study Static and Dynamic Aspectsof Voltage Stability

9414131 Ajjarapu本项目的目标是开发一个统一的框架工作，可用于研究结构保持电力系统模型中的电压稳定性。 该项目将开发一个系统的敏感性分析，以确定可能导致电压崩溃的区域、组件和参数。 该项目的突出特点是： o包括推荐的所有关键动态设备 最近的CIGRE工作组， o小信号动态连续潮流 配方系统地跟踪整个PV曲线 利用动态稳定性信息， o现实的负荷增加和发电共享方案， 相关限制（特别是，它取代了常数 发电机磁场和电枢电流限制）， o代数方程的参数灵敏度的推导 状态参数灵敏度变量 变量 这基本上给出了任何 参数到特定的临界点， 〇推导出间接识别 接近临界点， o角度或电压相关问题的分类， 微分几何最新结果的应用 将DAE简化为ODE的方法， 时域模拟， o节点聚焦和1：1共振的实际意义。 ***

9414131 Ajjarapu The objective of this project is to develop a unified frame work, which can be used to study voltage stability in the structure preserving power system model. This project will develop a systematic sensitivity analysis that identifies the areas, components and the parameters which are responsible for possible voltage collapse. The salient features of this project are: o Includes all the key dynamic devices are recommended by the recent CIGRE task force, o Continuation power flow with small signal dynamic formulation systematically traces the entire PV curve with dynamic stability information, o Realistic load increase and generation sharing scheme with relevant limits (in particular, it replaces the constant generator field and armature current limits), o Derivation of parametric sensitivity of algebraic variables in terms of parametric sensitivity of state variables. This basically gives the contributions of any parameter to a particular critical point, o Derivation of dynamic index that indirectly identifies the approaching critical point, o Classification of angle or voltage related problems, o Application of recent results of differential-geometric methods to reduce DAE's into ODE's to obtain efficient time domain simulations, o Practical significance of Node-Focus and 1:1 resonance. ***