The Technical &Economical Impacts of the Upgraded Rehab Power Plant in Jordan Eng. Mamoun Shehadeh Operational Planning Department National Electric Power Company Amman-Jordan

Rehab Power Plant Location : North of the Jordanian Power System. Owner: Central Electricity Generation Company. Connection with the Grid : Connected with 132 kV transmission grid, and supply electricity to the northern area, and partially to the central area. Rated Capacity: 357 MW.

Rehab Power Plant (260 Mw) Generating Units Before Plant Upgrading : GT 10 : 30 MW Operating on LFO since 1994 ( Peaking Unit, Simple Cycle ). GT 11 : 30 MW Operating on LFO since 1995 ( Peaking Unit, Simple Cycle ). GT 12 : 100 MW Operating on LFO since 1996 ( Peaking Unit, Simple Cycle ). GT 13 : 100 MW Operating on LFO since 2002 ( Peaking Unit, Simple Cycle ).

Rehab Power Plant Plant Upgrading Included : 1. I nstallation of two heat recovery steam generators HRSG‚ s. 2. New steam turbine and new electric generator with rated capacity 97 MW. 3. New control and burner management systems operated on both types of fuel (NG) as primary fuel and (LFO) as secondary back up fuel (dual firing). The total CCPP capacity 297 MW on NG + 60 MW SCGT,s on NG

Rehab Power Plant Driving Factors for Conversion to CCPP : 1. The provision of natural gas to Jordan from Egypt through the Arab Gas Pipe Line. 2. Extra generation without additional fuel. 3. CO2 and NOx emissions reduction.

Rehab Simple Cycle Mode and Combined Cycle Mode of Operation Combined Cycle ModeSimple Cycle Mode

Rehab Power Plant Dispatch Order before and After Upgrading daily load curve After daily load curve Before

HTPS 66 MW ATPS REHAB GT DEISEL REHAB CCRISHASTATION MW Loading MW Loading ADD COST JD/H SYS LOAD GTSEGYPT HTPS33 MW Rehab Simple Cycle Mode and Combined Cycle Mode of Operation ( Cost Effective)

Heat Rates and Production Costs RCCGT 13GT 12GT 11GT 10UNIT LFO Before Upgrading 9,38614,12214,08014,72414,800 HR KJ/KWh PC Fils/KWh RCCGT 13GT 12GT 11GT 10UNIT NG After Upgrading 8,70913,10113,02613,07613,028 HR KJ/KWh PC Fils/KWh

Unit Efficiency (Average values) RCCGT 13GT 12GT 11GT 10UNIT Before After Efficiency (%) Efficiency (%)

Technical Impacts of Rehab Power plant Upgrading 1.High flexibility in scheduling the maintenance program of the generating units of Jordanian power system due to the additional extra power 97 MW produced from steam part of the combined cycle. 2.High flexibility in commitment of Hussein thermal steam units which burn an expensive heavy fuel oil (HFO) with average production cost 120 Fils/KWh referring to the present fuel prices. Before this upgrading TSO was forced to commit one or more of these units even during non-heavy loading days (spring and autumn seasons), where such operational policy leaded to increase the average generation cost of the whole power system.

Technical Impacts of Rehab Power plant Upgrading 3. The total transmission system losses have been decreased due to the location of Rehab power plant near of the central load area instead of transmit the electrical power from far southern area (Aqaba steam power plant and Egypt) over long 400 kV transmission lines. It was defined by simulation that 100 MW generated from Rehab power plant is equivalent to 102 Mw purchased from Egypt, which means 2 MW reduction in the electrical losses.

Technical Impacts of Rehab Power plant Upgrading 4. The probability of cascade tripping of 132 kV transmission lines in central area after the tripping of Rehab-Zarqa 132 circuit has been sufficiently decreased, which improved the capability of the power system to avoid voltage collapse phenomenon. Before Rehab power plant upgrading and due to the high cost of generated power from gas turbines operating on LFO and from Hussein thermal steam units operating on HFO, the double circuit 132 kV transmission line connected both power plants were in overload condition in case of tripping one of both circuits

Technical Impacts of Rehab Power plant Upgrading 5. The maintenance time duration has been decreased and maintenance management has been improved, which leaded to minimize the total maintenance cost and increase the Rehab power plant availability, where the availability performance indicators for GT10, GT11, GT12, GT13, and for combined cycle unit were 98.44, 98.56, 74.85, and respectively in The spinning reserve has been increased which improved the power frequency characteristic and frequency regulation of the Jordanian power system in steady state conditions and after disturbances.

After Successful Upgrading 5. The number of CCPP, s increased until 2010 : -SAMRA CCPP ( 2 CC 2X300 MW). -AMME CCPP IPP ( 1CC 370 MW). TOTALL MW FROM CCPP, s =1267 MW ( 48% INSTALLED CAPACITY ) 6. In 2011 New CCPP, s will operate : - QATRANA CCPP IPP ( 1X375 MW). -SAMRA3 CCPP( 500 MW).

BEST SOLUTION IN PRESENCE OF NATURAL GAS - BUILDING NEW CCPP & - UPGRADE THE EXISTING SIMPLE CYCLE GAS TURBINES TO COMBINED CYCLE MODE. Thanks for attention