IMPACT OF ABT, NETWORK STRENGTHENING ON GRID OPERATION IN KARNATAKA SOUTHERN REGIONAL LOAD DESPATCH CENTRE POWER GRID CORPORATION OF INDIA LIMITED ADVANTAGE KARNATAKA

HARNESSING THE VAST HYDRO POTENTIAL –EFFECTIVE USE OF HYDRO TO SECURE BEST PRICES –DEPLETED RESERVOIRS SPARINGLY USED –CONSERVATION FOR PEAK OPTIMAL RESOURCE UTILISATION –EXEMPLARY PERFORMANCE IN UI MARKET –SCHEDULING FOR MAX RETURNS! GRID DISTURBANCES ARE A THING OF THE PAST VAST IMPROVEMENT IN GRID PARAMETERS LOSSES REDUCED SHARAVATHYUI SUMMARYSCHEDULEDISTURBANCESBLR VOLTAGETECHNICAL LOSS

THE COST OF GENERATION AT SHARAVATHY IS LESS THAN 20 Ps /UNIT AVERAGE SELLING UI RATE OF KARNATAKA IS 372 Ps/UNIT PLANT OPERATORS AT SHARAVATHY THINK OF THE RESERVOIR LEVEL IN RUPEES RATHER THAN IN FEET!!! Rs. OPTIMAL RESERVOIR UTILISATION SHARAVATHY IN KARNATAKA

SHARAVATHI GENERATION – TYPICAL DAY FREQ MW

UI SUMMARY – 116 WKS FROM 01/JAN/03 TO 20/03/05) STATE --->APKARKERTNPON Total Net UI in MUs exported(-) / Imported(+) Total Net amount in Rs. Crores Receivable(-) / Payable(+) Average rate of UI in paise/unit

INTER-REGIONAL EXCHANGES DETAILS UPTO 116 WKS (Till 20-MAR-05) WRER Net Energy Transaction 112 MU IMPORT BY SR 725 MU IMPORT BY SR Amount Due to SR Constituents Rs Cr.Rs Cr. Amount Credited TO SR Constituents Rs Cr.Rs Cr.

WRER Net Energy Transaction 82 MU IMPORT BY SR 707 MU IMPORT BY SR Amount Due to SR Constituents Rs Cr.Rs Cr. Amount Credited TO SR Constituents Rs Cr.Rs Cr. INTER-REGIONAL EXCHANGES DETAILS UPTO 105 WKS (Till )

52MU52MU 4247MU4247MU 6MU6MU 3874MU3874MU 1276MU1276MU 82MU82MU 1536MU1536MU 467MU467MU

Schedule Vs Actual Drawal by KAR Entitlement ά Capacity Charges Schedule ά Energy Charges Actual Drawal Frequency U I

NO DISTURBANCES DESPITE LOSING ENTIRE SUPER GENERATING PLANTS LIKE RAMAGUNDAM,VIJAYAWADA,KOTHAGUDEM, NORTH CHENNAI, SHARAVATHY ETC MAJOR AND MINOR DISTURBANCES SINCE 1994

REALITY BITE: FARMERS IN KARNATAKA ARE HAPPY WITH FEWER HOURS OF QUALITY POWER!!. EFFICIENCY OF PUMPS AT TG HALLI WATER WORKS IMPROVED! COMPARISION OF BANGALORE VOLTAGE-TYPICAL DAY BETTER VOLTAGE PROFILE MEANS LESS ELECTRICAL LOSSES

WATER SUPPLY TO BANGALORE LOW VOLTAGE PROBLEMS AROUND BANGALORE HAMPERED WATER SUPPLY EARLIER WITH BETTER VOLTAGE NOW, PUMPING EFFICIENCY HAS IMPROVED 400 KV STATION AT MYSORE BEING COMMISSIONED ON WAR FOOTING TO FURTHER FORTIFY THIS PART OF THE GRID PUMPING LOSSES REDUCED ENORMOUS SAVINGS TO THE STATE MOTOR BURNING AND MAINTENANCE COSTS ALSO CAME DOWN DRASTICALLY

Technical Losses w.r.t. Voltage Power (P)= Voltage * Current = V*I Losses = (Current) 2 * Resistance = I 2 *R Power is proportional to current, voltage remaining constant. To draw the same power at low voltage, one has to draw more current e.g.; 100 MW = 400kV * 250 Amps 100 MW = 320kV * 312 Amps Losses increases by 55% for 20%reduction in voltage. Losses doubles for about 30% reduction in voltage. e.g. Loss reduction in SR by 1% has given an annual saving of about Rs 290 crores

SOUTHERN REGION LOSS * **2005** LOAD (MW) LOSS (MW) LOSS % LOAD (MW) LOSS (MW) LOSS % LOAD (MW) LOSS (MW) LOSS % LOAD (MW) LOSS (MW) LOSS % AP KARNATAKA KERALA TAMILNADU PONDICHERRY CENTRAL GENERATING STATION SOUTHERN REGION *Source : Report of System Studies conducted for Accessing Shunt Compensation requirement in Southern Region – March 2004 and March SREB,CEA ** Projected figures