Microgrids and inverter-based resources (IBRs) offer an exciting promise of clean, renewable, and resilient energy. However, these emerging technologies pose a new set of challenges due to simulated inertia, limited overload current contributions, firmware-based inverter behavior, and more. This article explains some of these challenges and shares several common techniques used to overcome them with programmable protective relays (PPRs).

中文翻译：

---

实用的微电网保护解决方案：承诺和挑战

微电网和基于逆变器的资源（IBR）为清洁，可再生和有弹性的能源提供了令人兴奋的希望。然而，由于模拟惯性，有限的过载电流贡献，基于固件的逆变器行为等，这些新兴技术提出了一系列新的挑战。本文介绍了这些挑战中的一些挑战，并分享了使用可编程保护继电器（PPR）克服这些挑战的几种常用技术。