This paper investigates the impact of synchrophasor estimation algorithms in Under-Frequency Load-Shedding (UFLS) and Load-Restoration (LR) schemes, relying on frequency and Rate-of-Change-of-Frequency (ROCOF) measurements produced by Phasor Measurement Units (PMUs). We compare two consolidated window-based synchrophasor estimation algorithms, as representative approaches based on static and dynamic signal models, with a focus on the appropriateness of utilizing PMU-based ROCOF measurements. The performance of the proposed relaying scheme is assessed by means of a Real-Time Simulator implementing the time-domain full-replica dynamic model of the IEEE 39-Bus power system.

中文翻译：

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同步相量估计算法在基于 ROCOF 的低频减载中的影响

本文研究了同步相量估计算法在低频减载 (UFLS) 和负载恢复 (LR) 方案中的影响，依赖于相量测量单元产生的频率和频率变化率 (ROCOF) 测量(PMU)。我们比较了两种基于窗口的综合同步相量估计算法，作为基于静态和动态信号模型的代表性方法，重点是利用基于 PMU 的 ROCOF 测量的适当性。所提出的中继方案的性能通过实施 IEEE 39 总线电力系统的时域全副本动态模型的实时模拟器进行评估。