Post on 17-Jun-2018
Key Factors for Reliability & Efficiencyl
Evolution of KEPCO’s Gridll
The Roadmap of Korea’s Smart Gridlll
1. Key Factors for Reliability
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Reliability
Automation
(DAS, SCADA, EMS)
MaintenanceTechniques
(Hot-line operations)
Power QualityImprovement(SVC, STATCOM)
Protection System
(Fast and selectivedetection of faults)
Fault Prevention
(High –tech diagnosis devices)
Efficiency
2. Key Factors for Operational Efficiency
Peak Reduction
(DSM)
The Simplification ofVoltage Class
Energy TransmissionEfficiency
(UHV, HVDC,FACTs)
Automation
(S/A, DAS, EMS)
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1. KEPCO’s Grid Facility
Class Transformer(MVA) Line(C-km)
765kV 23,114 755
345kV 98,884 8,310
154kV 114,808 20,298
22.9kV 96,868 200,165
Total 333,674 229,528
Gen. Capacity : 73,372MW
: 63,212MW (’09. 8)Annual Peak
< ’08. 12 >
2. System Average Interruption Duration Index
0
50
100
150
200
250
300
350
1990 1995 2000 2005
SAIDI(min/customer/Yr.)
Hot-line Maintenance
DAS
NDIS(DistributionData Base)
Bypass Cabling
year
Min.
200,000
100,000
C-km(D/L)
300,000
T&D Manpower 6,000 (’92) 6,400 (’97) 6,600 (’02) 8,100 (’07)
3. Substation Fault – Bulk Grid Reliability
0.000
0.020
0.040
0.060
0.080
0.100
1992 1996 2000 2004 2008
S/S Automation, SCADA
Substation faults
Digital protection Ry.
Built-in diagnosis system
Faults/100MVA
year
Doble Test
TGIS(T/L)
240,000
60,000
MVA(above 154kV)
120,000
180,000
T&D Manpower6,400 (’97) 6,600 (’02) 8,100 (’07)6,000 (’92)
TGIS(S/S)
4. Annual Load Factor(%) – Demand Response
60
64
68
72
76
80
75 80 85 90 95 00 05
(%)
TOU (’78)Mid-nightTariff (’85)
Incentive for Peak Reduction (’85)
Remote-Controlled Air-Con. (’99)
DLC (’01)
Cooling Load,10GW (’04)
~ ’79 : Peak in Winter’80 ~ : Peak in Summer
Winter Peak (’93)
AMR Deployment (’99)
ICT Infrastructure Standardization
Smart Grid
New Service(DR, RTP)
Customer empowerment
WAMAC, Self-healing
Substation Automation
Smart DAS
Supply Optimization Efficient Utilization
Grid Intelligence Green Service
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Optimal Investments
Renewables, EV
High Efficiency
High Power Quality
2. Vision of Smart Grid Technology
Core Technologies Level
S / A, Smart DAS T&D Loss 4%SAIDI 16.2min
WAMAC Low
Renewables(Solar, Wind Power) Low
Intelligent Grid Operation
3. Main Issues for Smart Grid
Issues
Wind power output Solar power output
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Core Technologies Present Focuses in S/G
AMI140K(out of 18M)Large Customers
(Consumes 70% of electricity)
Metering Data Management, Consumption Consulting System
DR, RTP High Annual L/F 75~77%Peak reduction 5900MW Cost-effective DR Potential
Green Service
4. Main Issues for Smart Grid
Issues
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AMI installation for consumers using below 300kWh/month (10 million consumers), B/C Ratio 0.62
Economicfeasibility
Sm
art Grid
Managem
ent
Green S
ervice
ICT
Wide area Real-time Monitoring System
Wide area Protection and Restoration System
Wide-area Real-time Monitoring & Control
Operation of digital substation, Smart IED
Self-restoration Smart Operating System for Digital S/S
Smart distribution system,Eco-friendly Equipments Fault Anticipation Integrated Smart
Distribution Operation
ICT for Smart Grid,Comm. Security
Intelligent Comm. platform
Comm. Platform/ Security for Smart Grid
Setup of PHEV Infra. Operation of PHEV Infra
Grid Management using PHEV infra
AMI/AMR, DR System Smart DR operation
Field Test of Power IT
Smart GreenCity
EXPANSION OF SMART GRID, DG & LAST MILE INTELLIGENCE
Intelligent Grid
Setup of two way customer infrastructure New Services
Operating Platform for DER
Short-term (<3yrs) Mid-term (3~10Yrs) Long-term(>10Yrs)
2010 2015 2020 2030
Time Span
Field TestApplication
Green Service
Technology
Intelligent Grid
ManagementTechnology
ICT Infra.
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Technology Road Map for Smart Grid