Hardware Implementation of Dynamic Voltage Restorer to Reduce Voltage Sag/swell

Voltage sag disturbances are the most common Power Quality issues in distribution systems. Dynamic Voltage Restorer is usually used as a way to reduce voltage sag. The suggested method requires fewer switching devices and has superior compensating capabilities compared to frequently utilised compensators. The Static Series Compensator (SSC), also known as Dynamic Voltage Restorer (DVR), is ideal for protecting sensitive loads from incoming supply disruptions. This project presents the hardware implementation of single phase Dynamic voltage restorer in mitigating voltage sag. The DVR is linked in series to the distribution feeder at medium voltages. DVR offers a cost-effective solution for protecting sensitive loads at medium voltage levels. For low voltage applications, a DVR may be less cost effective than an uninterruptible power supply. Voltage and power injections into the distribution system can be used to overcome voltage sags. The DVR has the ability to both produce and absorb reactive and active power in order to guard against drops in voltage.