论文标题
考虑到发电机Q-Limits的混合电压稳定性和安全评估
Hybrid Voltage Stability and Security Assessment using Synchrophasors with Consideration of Generator Q-limits
论文作者
论文摘要
提高功率需求，推动经济学以及对电网基础设施的投资有限，使公用事业公司能够更接近其稳定性限制。电压不稳定性可能会触发级联绊倒，宽区域电压塌陷和电动机。通过部署相量测量单元（PMU），实时电压稳定性监视可能是必不可少的积极主动控制动作，并最大程度地减少对系统的影响。本文介绍了一种新型的在线算法，用于a）基于混合扰动分析的电压稳定性监测（HPVSM），b）包括电压稳定性指数中的Q-LIMIT和C）使用电压稳定性指数实时稳定性分析。基于HPVSM的电压稳定性指数是使用从线性状态估计器和PMU测量的数据计算的。通常，基于测量的方案忽略了发电机Q-Limits和安全性分析的影响。拟议的基于HPVSM的索引认为，通过使用实时PMU测量值预测关键发电机的发电机Q-LIMIT的影响。使用拟议的VoltageStability指数进行安全分析，对意外事件进行排名。模拟了9个总线WECC，IEEE 14、57和118公交系统的结果，突出显示了实时电压稳定性和安全性分析的拟议方法的效率
Increased power demands, push for economics and limited investment in grid infrastructure have led utilities to operatepower systems closer to their stability limits. Voltage instability may trigger cascade tripping, wide-area voltage collapse and powerblackouts. Real-time voltage stability monitoring possible with deployment of phasor measurement units (PMUs) is essential totake proactive control actions and minimize the impact on system. This paper presents a novel online algorithm for a) hybridperturbation analysis-based voltage stability monitoring (HPVSM), b) including Q-limit in voltage stability index and c) real timesecurity analysis using voltage stability index. HPVSM based voltage stability index is computed using the data obtained fromlinear state estimator and PMU measurements. Typically measurement-based schemes ignore the impact of generator Q-limitsand security analysis is not feasible. The proposed HPVSM based index considers the impact of generator Q-limits violationsby anticipating the critical generators using real-time PMU measurements. Contingencies are ranked using the proposed voltagestability index for security analysis. Results simulated for the 9-bus WECC, IEEE 14, 57 and 118 bus systems highlights thesuperiority of the proposed method in real time voltage stability and security analysis
