论文标题
识别基于逆变器的太阳能注入的振荡
Identifying Oscillations Injected by Inverter-Based Solar Energy Sources
论文作者
论文摘要
基于逆变器的太阳能能源正被广泛整合到现代电力系统中。但是，与常规机电振荡相比，很少研究它们对频域中系统的影响。本文提供了证据表明，基于逆变器的太阳能能源在Dominion Energy的服务领域注入了振荡模式。通过对现实世界环境同步和波点数据的分析来确认这种新模式。通过开发部署在Dominion Energy实施的PredictiveGrid^{TM}平台上的定制同步分析工具来执行分析。在此，我们描述并说明了从光谱图，功率谱密度图和模式形状估计中获得的初步分析结果。使用基于提议的频率成分能量指标的热图来说明这种新模式在Dominion Energy足迹中的出现和传播，这有助于评估该振荡的扩展和影响。
Inverter-based solar energy sources are becoming widely integrated into modern power systems. However, their impacts on the system in the frequency domain are rarely investigated at a higher frequency range than conventional electromechanical oscillations. This paper presents evidence of the emergence of an oscillation mode injected by inverter-based solar energy sources in Dominion Energy's service territory. This new mode was recognized from the analysis of real-world ambient synchrophasor and point-of-wave data. The analysis was performed by developing customized synchrophasor analysis tools deployed on the PredictiveGrid^{TM} platform implemented at Dominion Energy. Herein, we describe and illustrate the preliminary analysis results acquired from spectrogram observations, power spectral density plots, and mode shape estimation. The emergence and propagation of this new mode in Dominion Energy's footprint is illustrated using a heatmap based on a proposed frequency component energy metric, which helps to assess this oscillation's spread and impact.
