With ever-increasing rooftop photovoltaic (PV) penetrations in the bulk power system, comes the growing interest in understanding the behavior of PV inverters during grid disturbances. Providing a wealth of experimental evidence, this article presents results from testing 25 off-the-shelf residential PV inverters subjected to voltage and frequency perturbations. Notwithstanding compliance with Australian standards, test results demonstrate that the inverter operation can be jeopardized by grid disturbances such as frequency variations, rapid voltage sags, and phase-angle jumps. It is shown that inverters may abruptly disconnect or undesirably curtail their output power, potentially disrupting the security of systems with high power contribution from rooftop PV. The findings of this work ultimately contribute to explain aggregate behavior of rooftop PV during grid events recently experienced in Australia, and compel key points to consider in the development of future standards, forming a worthwhile case study for any region of the world with high PV penetration.

中文翻译：

---

屋顶光伏逆变器对电网扰动响应的测试证据与分析

随着大容量电力系统中屋顶光伏 (PV) 渗透率的不断增加，人们对了解光伏逆变器在电网干扰期间的行为越来越感兴趣。本文提供了大量的实验证据，展示了对 25 台现成的住宅光伏逆变器进行电压和频率扰动的测试结果。尽管符合澳大利亚标准，但测试结果表明逆变器的运行可能会受到电网干扰（例如频率变化、快速电压骤降和相角跳跃）的危害。研究表明，逆变器可能会突然断开或意外减少其输出功率，这可能会破坏具有来自屋顶光伏的高功率贡献的系统的安全性。