Rapid Voltage Change Detection: Limits of the IEC Standard Approach and Possible Solutions

摘要: Rapid voltage changes (RVCs) are power quality (PQ) events characterized by small and fast transitions between two steady-state root-mean-square (rms) levels. RVCs occur quite often at the distribution level expected to be even more frequent in future due increasing penetration of dynamic loads renewable-based generators smart grid. Unlike other PQ events, less critical, but also difficult detect than dips/sags swells, their smaller variations. Nevertheless, they can harmful generators’ control systems electronic equipment general. Moreover, strongly affect flicker. The IEC Standard 61000-4-3:2015 clearly describes an algorithm for RVC detection. However, this approach is poorly scientific literature. In fact, it suffers from some drawbacks. paper, them (e.g., rate-dependent detection limits delays) analyzed depth. addition, alternative based on estimation rate change rms proposed. Multiple simulation results show that considered sensitive noise, faster, especially when not so occur. allows measuring voltage, which currently disregarded Standard.