Implementation of Voltage and Frequency Ride-Through Requirements in Distributed Energy Resources Interconnection Standards

The rapid deployment of distributed resources (DR), principally photovoltaic systems, is driving changes in distribution system interconnection standards. While much of the effort is on mitigating local issues such as voltage control and protection coordination, there is also an increasingly urgent need to consider the effect that DR have on bulk power system reliability. A major concern is that large-scale deployment of DR without adequate voltage and frequency tolerance will negatively affect bulk system reliability and performance by making disturbance recovery more difficult. This report describes the technical implications of incorporating minimum voltage and frequency disturbance ride-through standards as part of the context of DR interconnection standards (IEEE Standard 1547). We discuss approaches to incorporate voltage and frequency tolerance, while preserving the effectiveness of existing DR interconnection.