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Frankfurt (Germany), 6-9 June 2011 EDP DISTRIBUTION AUTOMATION (r)EVOLUTION ROSA – PT – S3 – 0249 Frankfurt (Germany), 6-9 June 2011 Agenda Current Situation of DA in EDP Distribution Automation (DA) New Vision Pilot Project Goals New Generation Switching Devices – OCR3 Protection System and Reclosing Impacte Pilot Network Selection Conclusions ROSA – PT – S3 – 0249 Frankfurt (Germany), 6-9 June 2011 EDP Distribution Automation - Current Situation 390 Substations HV/MV 3.000 MV feeders 60.000 km MV overhead lines 2.500 MV Telecontroled switching devices on overhead MV lines Network Load Break Switches (OCR 1 + OCR 2) Remote operation and monitoring capability (OCR 1+2) Fault interrupting capabilities (OCR2) Year 2012: 4.000 telecontroled devices ROSA – PT – S3 – 0249 Voltage-time automatic functionality (OCR2) Frankfurt (Germany), 6-9 June 2011 Approach to further improve DA Software Simulation Localization Criteria KOLDA, costs for END, DA-devices and total, per DA-step KOLDA Back to results 900000 resulting value of END € , NPV period of 10 years excel 800000 cost of DA devices € 700000 total cost of ENDvalue and cost DA devices € costs (€) 600000 Validation 500000 400000 Comparison Total Costs, KOLDA versus Genodal, per feeder for Minho area 300000 Feitosa-Portulezo, optimal number of OCR3 switches 200000 Value € END 0 INV RECC 1600 1 3 3 3 5 5 € 250.000 TIEPI, END, €END Total Costs Before & after 100000 1800 5 step(s) KOLDA versus Genodal F.Anais Linear (KOLDA versus Genodal) F.Freixo T.Santar F.Refoios Linear (INV RECC) 1400 KOLDA approximation Power (Value € END) 1200 costs (€) y = 0,9494x + 8061,9 R2 = 0,9456 equality € 200.000 TC RECC 1000 800 € 150.000 T.Moure P.Ponte T.Arcos T.VilaVerde F.Portuzelo € 100.000 P.Geraz T. Geme T. Barca 600 F.PdeLima € 50.000 400 Note: R2=0,9456 200 Advise (decision) # and locations 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Marginal benefit in Total Costs €0 €0 € 50.000 € 100.000 € 150.000 € 200.000 € 250.000 Genodal optimum 19 number of switches Solution Specification Pilot Project Roll-Out decision Telecom HV MV CB1 R1 DA in Recloser mode DA in Sectionaliser mode R2 S4 N.O. R3 ROSA – PT – S3 – 0249 MV HV Real Field Test & Validation 800 TIEPI MT (min) 638 600 456 420 400 341 215 175 176 2004 2005 2006 200 111 113 2007 2008 0 2000 2001 2002 2003 Frankfurt (Germany), 6-9 June 2011 Results of computational study… TIEPI 100% Base, without DA 72% 25 DA Switches 56% 25 DA Switches & 15 Reclosers • The application of the first 25 DA Switches reduced TIEPI to 72% but increased MAIFI to 121% MAIFI 100% Base, without DA 121% 25 DA Switches ROSA – PT – S3 – 0249 The application of only 4 DA Switches per MV feeder may reduce the TIEPI to about half the value… 95% 25 DA Switches & 15 Reclosers • Despite the duration of interruptions to be smaller, customers are interrupted more often and may “perceive" a lower Quality of Service • The subsequent application of 15 Reclosers, besides reducing the TIEPI to 56%, reduced MAIFI to figures very similar to the starting values Frankfurt (Germany), 6-9 June 2011 Equipment Specification OCR3 “Intelligent” State of the Art Recloser Magnetic Actuators Voltage & Current Sensing To be used in NO and NC positions 100% modular approach Vendor independent FCI Coupling to MV overhead line – current transformers Individual units per phase line Lightning signalling of MV faults Local devices – without communications Sensitivity to di/dt Integrated Control-Micro RTU Mounting facilities with the overhead lines in service Integrated Protection (I>, I>> with inverse time characteristics) Low cost Two modes: Recloser and Sectionalizer Automatic Function ROSA – PT – S3 – 0249 Vendor independent ANSI/IEEE 495-1986 Frankfurt (Germany), 6-9 June 2011 Implementation Alternative 1: Automatic faul isolation Recloser programming: One fast reclose + one slow reclose Sectionalizer programming: Definite open after one event of current + 5s absence of voltage Fault isolated in 16,8s First test option for the Pilot Project ROSA – PT – S3 – 0249 Frankfurt (Germany), 6-9 June 2011 Implementation Alternative 2: Automatic network reconfig. OCR 2-1 OCR 2-2 Recloser programming: One fast reclose + one slow reclose On N.O. Points close after 20s of upstream voltage absence Sectionalizer programming: Definite open after one event of current + 5s of absence of voltage Fault isolated and network reconfigured in 21,8s ROSA – PT – S3 – 0249 Frankfurt (Germany), 6-9 June 2011 Impact on protection system & reclosing Issues: Answers: (1) Project team proposes short grading time between reclosers and adjustments at the substation (2) Project team proposes evaluating two reclosing schemes during the field pilot. ROSA – PT – S3 – 0249 10 MIF - PN LMT 1º OCR3 - Def. Time 2º OCR3 - Def. Time 3º OCR3 - Def. Time Tripping time (sec.) (1) How can coordination between the substation feeder protection and reclosers be guaranteed? (2) What should be the reclosing scheme at the substation? Phase overcurrent protection settings 1 0,1 0,01 100 1000 Fault current (A) 10000 Frankfurt (Germany), 6-9 June 2011 Pilot Network Selection Network requirements: (1) Earth grounded MV network (2) No investments in recent years (3) Reverse reconfiguration capacity (4) Quality of service problems (5) Additional criteria to optimize devices number and location ROSA – PT – S3 – 0249 Frankfurt (Germany), 6-9 June 2011 Communications Protocol and Technology IEC 60870-5-104 Standard protocol Relatively simple TCP/IP Multi-vendor Cost effective and efficient GPRS Proven wireless TCP/IP technology Low cost of modem and data plan Test if a public operator can deliver very tight SLA’s ROSA – PT – S3 – 0249 Frankfurt (Germany), 6-9 June 2011 1st Innovation level This pilot… HV MV CB1 OCR3 in Recloser mode OCR3 in Sectionaliser mode R1 R2 S4 S5 MV HV R3 Local Automation “OCR3” + FCIs 2 functionning modes: •Recloser •Sectionaliser Impact: TIEPI & MAIFI ROSA – PT – S3 – 0249 Operational Flexibility Independency from Communications and Dispatch Center Grid Resilience Frankfurt (Germany), 6-9 June 2011 Next Innovation level… (future) Communications channels Central Intelligence HV MV OCR3 in Recloser mode OCR3 in Sectionaliser mode Dumb No-Load Break Switch CB1 R1 R2 S4 DS1 MV HV R3 Hybrid Automation (central + local) Central Intelligence + OCR “…” Central algorithms for grid automatic control Dumb No-Load Break Switch (Low cost OCR) Impact: TIEPI ROSA – PT – S3 – 0249 Grid automatic reconfiguration Breaking of TIEPI saturation trend … in the path of Smart Grids Frankfurt (Germany), 6-9 June 2011 Conclusions Acquisition of solutions off-the shelf Evaluation of different suppliers Cost and delivery time reduction Improvement of overall quality of the equipments Philosophy change in Distribution Automation Decision for subsequent country roll-out ROSA – PT – S3 – 0249 Frankfurt (Germany), 6-9 June 2011 END Thank you for your Kind attention ROSA – PT – S3 – 0249