Synchrophasor Initiative in India - erldc
Synchrophasor Initiative in India - erldc
Synchrophasor Initiative in India - erldc
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SYNCHROPHASORS - INITIATIVE IN INDIA JUNE 20125.6.6 Case Study-34: Oscillations analysis (Southern Region, 22-Apr-2012)<strong>India</strong>n grid is demarcated <strong>in</strong>to 5 regional grids namely North, East, West, North East and South.The first four grids are synchronously connected whereas Southern Region (SR) isasynchronously connected with the rest of <strong>India</strong> grid through HVDC l<strong>in</strong>ks namely Bhadrawatiback to back, Gazuwaka back to back and Talcher-Kolar bipole. Oscillations have beenreported from Ramagundam (NTPC) generat<strong>in</strong>g station <strong>in</strong> SR whenever the power-flow from thewestern region to southern region through HVDC Bhadrawati is <strong>in</strong>creased to 900MW andabove. This can be established with the help of figure no 107 and 108. As power flow <strong>in</strong>Bhadrawati is <strong>in</strong>creased, oscillations can be seen <strong>in</strong> flow on Hyderabad-Ramagundam.Figure 107: Flow on Hyderabad-Ramagundam (HVDC Bhadrawati = 690 MW)POSOCO Page 108 of 143
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