Consider the following statements and choose the correct option.Statement 1: DVR (Dynamic Voltage Restorer) is a series compensation device.Statement 2: DVR protects sensitive electric load from power quality problems such as voltage sags, swells, unbalance and distortion through power electronic controllers."Statement 2: In a synchronous motor, at no-load condition, and with normal excitation the armature current

• A. Statement 1 is TRUE and Statement 2 is FALSE
• B. Both Statement 1 and Statement 2 are FALSE
• C. Statement 1 is FALSE and Statement 2 is TRUE
• D. Both Statement 1 and Statement 2 are TRUE

Answer: (D)

Dynamic voltage restoration (DVR) is a method of overcoming voltage sags and swells that occur in electrical power distribution. Devices used for DVR include static var devices, which are series compensation devices that use voltage source converters (VSC).
The DVR is used to inject three phase voltage in series and in synchronism with the network voltages in order to compensate voltage disturbances with a benefit of active /reactive power control.