Synchrophasor Initiative in India - erldc

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SYNCHROPHASORS - INITIATIVE IN INDIA JUNE 20125.6.7 Case Study-35: Oscillations analysis (Western Region,18-Apr-2012)Oscillations under high power flow at Bhadrawati were also studied in Western region. Real timefield testing was conducted on 18-April 2012 by increasing the power order of HVDCBhadrawati back to back to 900 MW towards SR at 0930 hrs. The frequency and voltage profileduring the testing are shown below:• Scenario 1: HVDC Power Order < 900MWFigure 109: R phase voltage of Raipur and Bhadrawati when HVDC flow is 750 MWFigure 110: Frequency plot when power flow on HVDC Bhadrawati is 750 MWPOSOCO Page 110 of 143
SYNCHROPHASORS - INITIATIVE IN INDIA JUNE 2012• Scenario 2: HVDC Power Order = 900 MWFigure 111: Oscillations seen in Raipur and Bhadrawati when HVDC flow is 900 MWFigure 112: Oscillations in frequency when power flow on HVDC Bhadrawati is 900 MWPOSOCO Page 111 of 143
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Synchrophasor Initiative in India - erldc

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