Abstract Accurate identification of fault source causing voltage sag is great significance to the governance and further research sag. In this paper, a method based on improved grey correlation analysis (GRA) proposed. view deficiency that traditional GRA only considers similarity, proposed geometric area slope sequence into calculation coefficient, so has attributes both similarity data closen...

The objective of this paper is to present the modeling and analysis of a 1.7 Mva SMES-based voltage sag corrector devices. The topology of the SMES-based system and its response to an upstream fault are described. This paper details various modeling aspects of the device including methods to generate a triangular signal and an internal reference voltage. Models to characterize the harmonic cont...

This paper presents a time-sequential simulation technique incorporating the effects of interruptions and voltage sags in the reliability cost/worth evaluation of distribution systems equipped with different overvoltage protection types. The interruption and voltage sag data for different overvoltage protection schemes was obtained from long-term measurements performed at a 110/20 kV substation...

Power quality assessment of the Bogotá distribution network has been performed using four different statistical methods. Data was collected during two years by CODENSA, the largest Colombian electricity utility. The strategies have been divided as quantitative and qualitative approaches. Quantitative strategies are based on the study of probability density functions as well as the analysis of p...

This paper presents development of an optimal control strategy for a hybrid photovoltaic/battery energy storage (PV/BES) system. The fluctuations at the DC bus voltage due to voltage sag were mitigated by using charge/discharge capability of the BES through the DC/DC buck/boost converter. Furthermore, an optimization of system control parameters responsible for DC bus voltage regulation within ...