Robust Islanding Identification Technique for single DG Distribution Networks and Rank Based Load Shedding

With the development of Distributed Generation (DG) systems, there are new challenges in the operation of modern power systems. The identification and islanded operation of the system has become complex. Failure to detect islanding might result in decline of the system performance. This paper presents a technique for identifying the bus vulnerable for islanding (RIIT) in the presence of a single large DG unit. In the identified islands, power mismatch is alleviated by a Rank Based Load Shedding scheme. Investigations on standard IEEE radial bus systems have been carried out to evaluate the validity of the proposed schemes.