Reducing the Voltage Sag and Swell Problem in Distribution System using Dynamic Voltage Restorer with PI Controller
Raunak Jangid1, Kapil Parkh2, Pradeep Anjana3

1Raunak Jangid, Electrical, Shrinathji Institute of Technology & Engineering, Nathdwara, Rajasthan. India.
2Kapil Parikh, Electrical, Shrinathji Institute of Technology & Engineering, Nathdwara, Rajasthan. India.
3Pradeep Anjana, Electrical, Malaviya National Institute of Technology Jaipur, Rajasthan. India.
Manuscript received on December 08, 2014. | Revised Manuscript received on December 15, 2014. | Manuscript published on January 05, 2014. | PP: 193-202 | Volume-3 Issue-6, January 2014. | Retrieval Number :F2044013614/2014©BEIESP
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Abstract: One of the major problems observed in distribution system in recent days is Power Quality. Today most of the people are using the sophisticated electrical equipment based on semiconductor device, these equipment pollute the power quality. The sag and swell problem not only occur by the disturbed power quality but also due to high system tapping at the point of common coupling in the system. The non linear load is also creating the same problem at the load end. The Dynamic Voltage Restorer is recognized as the best solution for mitigation of voltage sag and swell associated problems in the highly taped distribution system. This work presents the simulation modeling and analysis of advanced DVR system for solving these problems. The PI control scheme is used for generating the gate pulse for IGBT bridge converter. The reference DC voltages are taken from the battery. The three phase fault is creating in the system and for analyzing the result. The role of DVR is to compensate the load current and voltage is investigated during the fault condition. Over all the DVR is improving the voltage quality as well as the reactive power demand during the uncharacteristic condition
Keywords: Voltage sag, swell, DVR, PI controller, LC filte