Xác định vị trí bộ bù điện áp động (dvr) cho trạm biến áp xí nghiệp

Abstract

Short-term voltage sag (SAG) is a power quality phenomenon in which the effective value of voltage drops below 0.9 pu for a duration of less than 1 minute. The main cause of SAG is typically due to short circuits in the power grid, motor starting, and no-load transformer energization, with short circuits being responsible for over 90% of SAG events in the power system. The SAG phenomenon can result in economic losses. To mitigate SAG, enhance power quality, and ensure economic stability for businesses, there are various solutions, among which, the use of FACTS devices in general, and devices such as Dynamic Voltage Restorers (DVR) in particular, are increasingly being widely applied. Determining the optimal location for installing DVR in industrial plants is an essential task to ensure power quality and maximize economic benefits.