1. INTRODUCTION
1.1 Over view of Power Quality The World is moving towards provide Continuous power with quality. In order to supply such quality power our Engineering persons did so many experiments since 18th Century. The world having so many power quality revolutions step by step such a way improve power quality aim, Saving power 1kWH at customer end is equal to generation power at 15-20kWH.The term “power quality” means different things to different people. One definition is the relative frequency and severity of deviations in the incoming power supplied to electrical equipment from the steady 50 Hz, sinusoidal waveform of voltage or current.
These deviations may affect the safe or reliable operation of equipment such as computers, Automation equipments, Drive control Desks, Console desk panel, SCADA,DCS Controlling system…show more content… The Voltage sag & swells can define also long interruption or short interruption based on voltage magnitude and Time period of same signal. if The small period signal interrupt our Large Thermal Power Station, again it take 8hr to 1Day time to come to stable operation condition, Let us take Ex: Rayalasima Thermal Power station Generating capacity 5X250 MW, If this much huge Generation plant go to Shut down state think loss of Power & Unit price. At this time End user receives Poor Power.
The terms “poor power quality” mean that there is ample deviation from norms in the power supply that may cause equipment malfunction or failure. In certain commercial and industrial electrical applications, it is critical that high quality and uninterrupted power be supplied. This Voltage sag & swells produces the Electromagnetic interfacing with Telecommunication lines and Community system such that RS485, RS232, Goose, CAN, WLAN, LAN & Peer-to-Peer