This paper reports a practical challenge in Distributed Energy Resources (DER) operation: open phase detection. The paper presents a wide variety of naturally occurred open phase events recorded by power quality meters in DER commercial operations. The events demonstrate the complexity of open phase detection due to electrical and magnetic interphase couplings through transformer winding and core configurations. The coupling effect could recreate the missing phase in various patterns so that the DER control and protection systems or control room operators may not detect the anomaly for prolonged period of time. This paper shares experiences of timely DER open phase detection by using power quality data and suggests practical detection guidelines based on waveform signature analytics. The original field records provide credible benchmarking references for algorithm development to meet the new DER open phase detection requirement in the IEEE Stdandard 1547–2018 revision.

中文翻译：

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使用电能质量数据分析在 DER 运行中进行开相检测

本文报告了分布式能源 (DER) 操作中的一个实际挑战：缺相检测。本文介绍了 DER 商业运营中电能质量计记录的各种自然发生的缺相事件。这些事件证明了由于变压器绕组和磁芯配置中的电和磁相间耦合导致断相检测的复杂性。耦合效应可能会以各种模式重新创建缺失的相位，因此 DER 控制和保护系统或控制室操作员可能无法在很长一段时间内检测到异常。本文分享了使用电能质量数据及时检测 DER 开相的经验，并提出了基于波形特征分析的实用检测指南。