SPECIAL PROTECTION SCHEME FOR KOODANKULAM

SPS FOR KOODANKULAM CONTINGENCY LEVEL ABOUT THE SAME AS TALCHER-KOLAR SINGLE UNIT TRIPPING : 1000 MW STATION LOSS : 2000 MW LARGE DIPS IN FREQUENCY LIKELY CONVENTIONAL PROTECTION SCHEMES MIGHT BE INADEQUATE LARGE INCREASE IN NORTH-SOUTH FLOWS LIKELY DUE TO TRIPPING OSCILLATIONS IN THE SYSTEM REDUCED SECURITY TRUNK CORRIDOR LOADING

MULTI-CIRCUIT TOWER ON 220 KV EDAMON-KAYATHAR CORRIDOR TIRUNELVELI KOODANKULAM TRIVANDRUM EDAMON COCHIN THRISSUR MADURAI UDUMALPET ARASUR NLY-EXP NEYVELI BAHOOR PUGALUR TRICHY SALEM HOSUR MYSORE SP-BUDUR MELKOTTAIYUR ALMATHI CHITOOR KOLAR S’HALLI NLMNG HOODY KOODANKULAM TRANSMISSION SYSTEM AS APPROVED IN 17TH STANDING COMMITTEE MEETING HELD AT BANGALORE IN SEP03 KARAIKUDI HASSAN KOZHIKODE SUGGESTED SPS LOAD TRIP POINTS MULTI-CIRCUIT TOWER ON 220 KV EDAMON-KAYATHAR CORRIDOR

SUGGESTED FEATURES SCHEME TO BE MADE PART OF THE PROJECT GRANULARITY OF SIGNAL TO BE GENERATED TO BE DECIDED ONE SIGNAL ON ONE UNIT TRIP SECOND SIGNAL ON BOTH UNITS TRIP SIGNAL WOULD BE TRANSMITTED THROUGH WIDEBAND TO PRE DECIDED LOCATIONS SIGNAL WOULD BE INTERPRETED BU END EQUIPMENT ND ACCORDINGLY TRIP COMMAND WILL BE ISSUED SPINNING RESERVES COULD ALSO FORM PART OF THE SCHEME AUTOMATIC RAMP UP/START UP OF SOME DEDICATED HYDRO STATIONS SAY LIKE KADAMPARAI COULD ALSO FORM PART OF THE SCHEME PROTECTION OF UNITS ON EVACUATION LINE TRIPPING (LIKE RUNBACK OF TALCHER AND KAIGA HOUSE LOADING) COULD BE PUT IN PLACE