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ADDRESSSING THE ISSUE OF HIGH VOLTAGE

ADDRESSSING THE ISSUE OF HIGH VOLTAGE. Action taken to control High Voltage. Closing of Bus and Line Reactors Changing of Transformation Tap Position Export to WR/ER Region Optimisation of HVDC Set Points Var absorption by Generators Switching – off of Capacitors. ISSUES OF CONCERN.

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ADDRESSSING THE ISSUE OF HIGH VOLTAGE

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  1. ADDRESSSING THE ISSUE OF HIGH VOLTAGE

  2. Action taken to control High Voltage • Closing of Bus and Line Reactors • Changing of Transformation Tap Position • Export to WR/ER Region • Optimisation of HVDC Set Points • Var absorption by Generators • Switching – off of Capacitors

  3. ISSUES OF CONCERN STILL HIGH VOLTAGES IN SOME AREAS

  4. ONE CKT OF 400KV TALAGUPPA-NELAMANGALA LINE OPENED OUT ON REGULAR BASIS TO CONTAIN OVER VOLTAGE. • 400/220 KV TALAGUPPA ICT TAP POSITION AT 9 RESULTING IN • 400KV BUS VOLTAGE @ TALAGUPPA IS AT 431KV WHILE 220KV BUS VOLTAGE @ SHARAVATHY IS AT 219KV • OPENING OF ONE CKT OF 400KV TALAGUPPA-NELAMANGALA DROPS THE 400KV VOLTAGE BY 7 – 9 KV. • CHANGING THE TAP TO 11 WOULD BRING DOWN 400KV VOLTAGE BY 4 – 6 KV & CORRESPONDINGLY 220KV VOLTAGE WOULD ALSO RISE. HIGH VOLTAGE PROBLEMWESTERN PART OF KARNATAKA Graphs Map Kar GRAPH kAIGA

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