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1Copyright ©2014 Tokyo Electric Power Co., Inc. All Rights Reserved
TEPCO’s “Smart Grid”Initiatives
TEPCOTEPCO’’s s ““Smart GridSmart Grid””InitiativesInitiatives
Toshiro TakebeToshiro TakebeManaging Executive Officer / President of Power Grid CompanyManaging Executive Officer / President of Power Grid Company
September 23, 2014September 23, 2014
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2Copyright ©2014 Tokyo Electric Power Co., Inc. All Rights Reserved
TEPCOTEPCO’’s Positions Position
12,073kmUG transmission line circuit length
1288kw/km2Demand density
64.3GW(July 2001)
50.9GW(Aug 2013)
TEPCO(FY2013)
28,247kmOH transmission line circuit length
45 millionPopulation in service area
39,542km2Service area
Peak demand
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3Copyright ©2014 Tokyo Electric Power Co., Inc. All Rights Reserved
Progress of Market Progress of Market LiberalizationLiberalization
EHVEHV((≧≧22kV)22kV)
HVHV((≧≧6kV)6kV)
LVLV200V200V100V100V
March 2000March 2000 April 2004April 2004 April 2005April 2005 April 2016April 2016
【【26%26%】】
【【74%74%】】
【【40%40%】】
【【60%60%】】
【【60%60%】】
【【40%40%】】
【【100%100%】】
≧≧2000kW2000kW
≧≧500kW500kW
≧≧50kW50kW
Voltage Voltage CapacityCapacity
RegulatedRegulated
LiberalizedLiberalized
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4Copyright ©2014 Tokyo Electric Power Co., Inc. All Rights Reserved
Holding Company System (2016Holding Company System (2016--))
Power Generation Operational Company
Power Generation Operational Company
Holding Company
Shared Services
Fukushima Daiichi D&DEngineering CompanyFukushima Daiichi D&DEngineering Company
Fukushima Headquarters
Nuclear Power StationsNuclear Power Stations CompensationCompensation
Reconstruction SupportReconstruction SupportManagement SupportManagement Support
Transmission and distribution operational company
Transmission and distribution operational company
Retail Sales operational company
Retail Sales operational company
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5Copyright ©2014 Tokyo Electric Power Co., Inc. All Rights Reserved
Power Grid Company CommitmentsPower Grid Company Commitments
1. Comprehensive Cost Reduction for Transmission and Distribution while also providing stable supply
2. More advanced environment for network use
3. Expanding the scope of business using technological expertise
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6Copyright ©2014 Tokyo Electric Power Co., Inc. All Rights Reserved
Overseas advancement / international contribution
System technology for greater introduction of RE
OverseasOverseas
WindWind
TransmissionTransmissionnetworknetwork
Organization for Promoting Organization for Promoting Nationwide CoordinationNationwide Coordination
Distribution Distribution networknetwork
Information and communication network
SolarSolar
HydroHydroNuclearNuclear
DC DC transmissiontransmission
SSSS
Next-generation monitor / control with ICT
Upgrading of network
Visualization of system characteristics
Upgrading voltage control
NationwideNationwidesystemsystem
60Hz60Hzareaarea
Control officeControl office
CoordinatedCoordinated
EVEVSmart meterSmart meter
Storage Storage batterybattery
Quick Quick charge EVcharge EV
ThermalThermal
CLDCCLDC
Expansion of inter-area power wheeling
50Hz50Hzareaarea Nationwide demand/
supply control
Dispersed Dispersed power sourcespower sources
LargeLarge--scale centralized scale centralized power sourcespower sources
TEPCOTEPCO’’s Intended Power Systems Intended Power System
Copyright ©2014 Tokyo Electric Power Co., Inc. All Rights Reserved
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Smart GridSmart Gridon the supply sideon the supply side
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8Copyright ©2014 Tokyo Electric Power Co., Inc. All Rights Reserved
Bulk Power Transmission SystemBulk Power Transmission System
Tokyo
500kV
500kV
275kV
1,000kV (UHV) Tower
(1,000 kV Design)
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Tokyo Area NetworkTokyo Area Network500 kV Cable275 kV Overhead 275 kV cable
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Utilization of underground space in Tokyo with environmental harmony
Effective Use of UndergroundEffective Use of Underground
275kV Underground Substation
500kV Underground Substation
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Reliable Distribution LinesReliable Distribution Lines
Pole Transformer withPole Transformer withBuiltBuilt--in Arrester in Arrester
Insulated WireInsulated Wire
6kV Discharge Clamp 6kV Discharge Clamp Insulator Insulator
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12Copyright ©2014 Tokyo Electric Power Co., Inc. All Rights Reserved
ArresterOverhead Grounding Wire
Air Switch with Built-in Arrester
6kV Discharge Clamp Insulator
Solid Type 6kV Tension Insulator
Pole Transformer with Built-in Arrester
Insulated Wire
Reliable Distribution LinesReliable Distribution Lines
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13Copyright ©2014 Tokyo Electric Power Co., Inc. All Rights Reserved
Trends of SAIDI & SAIFITrends of SAIDI & SAIFI from 1960 to 2013from 1960 to 2013
Insulated WireLightning Protection Measures
Distribution Automation System
(FY)
0
0.5
1
1.5
2
2.5
1960
1965
1970
1975
1980
1985
1990
1995
2000
2005
2009
2010
2011
2012
2013
SAIFI(
times)
0
20
40
60
80
100
120
140
160
SAID
I(mi
n)
SAIFI SAIDI
Earthquake
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:Communication line
★★ Remote setting Remote setting for control for control devicesdevices
東京電力
:Sensor built-in switch
Monitoring data
Measurement Data (V, I, θ etc)
<<Control OfficeControl Office>>DG
S/S
SVR, etc
Wind, PV
:Distribution Line
★★ Prompt system Prompt system impact study for impact study for interconnectioninterconnection
★★ Fault point Fault point detection by detection by monitoring V0, I0monitoring V0, I0
★★ Switching based Switching based on phase angle on phase angle measurementmeasurement
UpgradUpgrade ofe of Distribution SystemDistribution System
Sensor built-in switch
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Speedy Deployment ofSpeedy Deployment ofSmart Meters Smart Meters
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16Copyright ©2014 Tokyo Electric Power Co., Inc. All Rights Reserved
Installation ScheduleInstallation Schedule
Over 20kV Over 20kV SupplySupply
6kV Supply and6kV Supply andover 500kWover 500kW
27 million
3,000
6kV Supply and6kV Supply andbelow 500kWbelow 500kW
40%
40%Under 6kV Under 6kV SupplySupply
12,000
230,000 20%
Number of customers Ratio of Energy UseClassification Progress of Installation
・Finished
・will finish by 2016.
・have started to install from 2014 and will finish by 2020.
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17Copyright ©2014 Tokyo Electric Power Co., Inc. All Rights Reserved
Communication System ConfigurationCommunication System ConfigurationA Combination of “Wireless Mesh”, “PLC” and “Cellular Network”
Wireless Mesh
PLC
HEMSMain Site
Fiber-opticNetwork
(Owned by TEPCO)
HE MDMS
MDMMAMNM
MobileTerminal
Maintenance Terminal
Route B Route A
FAN WAN
Repeater
SST, L3SW etc
MassHousing
HEMS
HEMS
Backup Site
HE
Concentrator
Fiber-opticNetwork
(Owned byCommunicationCarrier)
Cellular PhoneNetwork
BaseStation
Cellular network
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Concept of Concept of ““Right Technology, Right PlaceRight Technology, Right Place””
Areas,Number of Smart Meters ratio
Wireless Mesh PLC(Power Line Communication) Cellular Network
Mesh created with meters with low cost. Suitable for relatively high-density areas.
Suitable for complex buildings where radio signals are likely to be blocked.
Cellular services such as 3G and LTE. Suitable for low density areas.
Concentrators
Smart MetersElectrical
Room
HV lineSubstation
Smart Meters
Cellular Base Station
1~9 10~29 30~59 60~99 100~ [meters / 250m × 400m unit area]0
70% 10% 20%
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19Copyright ©2014 Tokyo Electric Power Co., Inc. All Rights Reserved
・920MHz, wirelessIEEE802.15.4g/e(Wi-SUN)
・PLCITU-T G.9903(G3-PLC)
IPECHONET Lite
①Section ② ③ ④Data Format DLMS/COSEM DLMS/COSEM CIM/Legacy
Network Layer - IP IP
Transmission Medium
(PHY/MAC etc…)
Asynchronous Communication
FAN・Wireless Multi-Hop
IEEE802.15.4g/e・PLC
ITU-T G.9903WAN
IEEE 802.33GPP
IEEE 802.3
MeteringPart
HEMS
CommunicationPart
Smart Meter
MDMS② ③
①
③HS(Head end System)
Adoption of International StandardsAdoption of International Standards
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20Copyright ©2014 Tokyo Electric Power Co., Inc. All Rights Reserved
Early Installation of Smart MetersEarly Installation of Smart Meters
Approx. 3.2Mcustomers/year
Approx. 3.3 ~ 5.7M
customers/year
OriginalPlan
AcceleratedPlan
3.2 M
Early Stage Acceleration Stage
5.7 M
3.3 M
(FY)
(FY)
Legal Replacement
New houses
Front loaded installation
Year of “Tokyo Olympics”
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21Copyright ©2014 Tokyo Electric Power Co., Inc. All Rights Reserved
HEMSHEMSHEMS
EV
Safety confirmation Service etcSafety confirmation Service etc
Smart MeterSmart Meter
PVBattery
Visualization InformationVisualization Information
MDMSMDMS((Meter DataMeter DataManagementManagementSystemSystem))
TEPCOTEPCO(CSC)(CSC)
TEPCOTEPCO (PGC)(PGC)PPSPPS
AggregatorAggregator
Cell Phone/Internet
BigDataAnalysis
BigDataAnalysis
Company system
Possibility of new services utilizing Smart MetersPossibility of new services utilizing Smart MetersFunction
• Automatic Metering [kWh] [A] [V] • Remote Disconnect /Reconnect• Remote Demand Limit Change
FunctionFunction• Automatic Metering [kWh] [A] [V] • Remote Disconnect /Reconnect• Remote Demand Limit Change
Appliances
Energy Management ServicesEnergy Management Services
Advanced Community Information ServicesAdvanced Community Information Services
Advising on & Promotion
of Home Appliance Replacement
Advising on & Promotion
of Home Appliance Replacement
Demand ResponseDemand Response
Joint MeteringJoint Metering
Demand ResponseDemand Response
Variety of Rate menusVariety of Rate menus
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DR Signal
Measured Data
kW
TimeTime
Yen/kWh
CPP (Critical Peak Pricing)CPP (Critical Peak Pricing) PTR (Peak Time Rebate)PTR (Peak Time Rebate)
kW
TimePeak Time
Research on Introducing Dynamic Pricing for Residential Customers
Peak Time Peak Time
HEMSHEMSIn-Home Displays
Smart Meter
Server
Customers are Provided a Rebate Customers are Provided a Rebate for Reductions in Consumptionfor Reductions in Consumption
Demand Response utilizing Smart Meters Demand Response utilizing Smart Meters
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Integration of RENEWABLESsupported by Smart Grid
National Project
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24Copyright ©2014 Tokyo Electric Power Co., Inc. All Rights Reserved
Renewable Generation Capacity in JapanRenewable Generation Capacity in Japan[GW]
Before FIT Before FIT (~2012.6)(~2012.6)
After FIT After FIT (2012.7~2014.3)(2012.7~2014.3)
About 16GWIn TEPCO’s Area
0
10
20
30
40
50
60
70
80
InstalledCapacity
InstalledCapacity
CertifiedCapacity
PV(residential)PV(non-residential)Wind PowerSmall HydroBiomassGeothermal
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25Copyright ©2014 Tokyo Electric Power Co., Inc. All Rights Reserved
PV installations in TEPCOPV installations in TEPCO’’s areas area[number of spots]
x1000
(FY)(FY)
[capacity] [number of spots]
[MW]
3315
104 146 208 273 335 385 437 565787
1118
1692
518
401
299
218160
12410893755740270
500
1000
1500
2000
2500
3000
3500
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 20130
100
200
300
400
500
600
MW No. of Spots
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26Copyright ©2014 Tokyo Electric Power Co., Inc. All Rights Reserved
■Voltage rise and Protection due to reverse power flow→Additional installation of pole transformers, or voltage regulators→Upgrading protection relays for reverse power flow
■Voltage rise and Protection due to reverse power flow→Additional installation of pole transformers, or voltage regulators→Upgrading protection relays for reverse power flow
Issues in Integration of LargeIssues in Integration of Large--scale scale Renewable EnergyRenewable Energy
■Overload of Transmission Facilities→Coordination mechanism for power network upgrading cost
■Overload of Transmission Facilities→Coordination mechanism for power network upgrading cost
■Frequency ControlShortage of frequency adjustment ability against RE fluctuation
→Forecasting of RE output→Cooperation control of battery and existing generator→Nationwide coordination of power system operation
Surplus power during low demand period→RE output control →Nationwide coordination of power system operation→Control with pumped storage hydro power plants→Electricity Power Storage
■Frequency ControlShortage of frequency adjustment ability against RE fluctuation
→Forecasting of RE output→Cooperation control of battery and existing generator→Nationwide coordination of power system operation
Surplus power during low demand period→RE output control →Nationwide coordination of power system operation→Control with pumped storage hydro power plants→Electricity Power Storage
Ongoing MeasuresOngoing Measures
Coordinating MeasuresCoordinating Measures
Under DevelopmentUnder Development
P.27P.27
P.28P.28
P.32P.32
P.31P.31
P.31P.31
P.29P.29
P.33P.33
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27Copyright ©2014 Tokyo Electric Power Co., Inc. All Rights Reserved
Auto Voltage Regulator (SVR) Protection designed forreverse power flow
TransferTrip signal
Fault
Issues on Voltage Control & ProtectionIssues on Voltage Control & ProtectionReverse Power Flow Voltage control function of conventional distribution S/S transformers
cannot adjust voltage according to power flow direction, so distribution line voltage may deviate from control range
SVR
Residential PVResidential PVLargeLarge--scalescale
PVPV
Reverse Power FlowReverse Power Flow
DistributionDistributionSubstationSubstation
CountermeasuresTransferTrip signal
FaultPV
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Transmission DistributionSubstation
Capacity ・・・ ・・・
BeforePower Network designed for demand
After Integration of Large-scale REReverse power flow and Capacity shortage
Overload of Transmission Facilities Overload of Transmission Facilities
Large-scale Renewable Energy
We need to establish a coordination mechanismfor the power network upgrading cost.
The area suitable for integration of large-scale RE is normally a low demand area
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Distribution System
Grid-side Batteries
Thermal
Substation
CustomerCustomer--side Batteriesside Batteries
Battery Battery SCADASCADA
HydroLoad Frequency ControlDaily Demand & Supply BalanceSpinning Reserve
Virtual LargeVirtual LargeBatteryBattery
Central Loading Dispatch Center
Power SystemInformation Network
TransmissionSystem
Countermeasures for Frequency ControlCountermeasures for Frequency ControlNational ProjectBattery SCADA
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Battery SCADA
Control room
Battery Containers
HITACHI250kW/51kWh
or100kW/100kWh※1
MEIDENSHA/NEC
250kW/250kWh※1
TOSHIBA 300kW/100kWh※2
※1: nominal capacity ※2: operational capacity
Lithium ion Batteries
Battery SCADA Battery SCADA National Project
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Large-scale Wind Power Resource
High Demand Area
Inter-regional tie lines
Nationwide Coordination of Nationwide Coordination of Power System OperationPower System Operation
Increased wind power usingIncreased wind power usinginterinter--regional tie linesregional tie lines
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Prediction Ramp of Wind PowerPrediction Ramp of Wind Power
Installation ofObservation facilities 0
20
40
60
80
100
120
21 3 9 15 21 3 9 15 21
エリア発
電出力
時刻
発電出力予測
発電出力実績
Phase Error
Amplitude Error
Announcement
改善された発電出力予測
PredictedActual
Improvement
Meteorological Prediction Approach which considers changes in wind conditions and atmospheric fieldStatistical Prediction Approach which utilizes historic data and so onCombination of Meteorological Approach and Statistical Approach
National Project
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DG (Diesel Generator)
DG control panel
Integrated control of energy storage
(battery, time shift)
Control of outputs of Renewables PV
WTSmall PV (Customer Side)
Battery (Customer Side)Large Heat StorageEVEcoCute (Fast DR)
Large Battery (Grid Side)
Demand Prediction
Optimal Economical Operation of DG
New DevelopmentIntegrated EMS
Existing System
Prediction of outputs and fluctuations of RE
New DG control Panel
Development of Integrated EMSDevelopment of Integrated EMSfor Niijimafor Niijima
control
monitorG
MeteorologicalInformation
National Project
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Test facilities on NiijimaTest facilities on Niijima
WT300kWMeteorological Equipment
PV300kWBT300kWhMeteorological Equipment
PV10kW+BT12kWh(Elementary School)
PV10kW+BT12kWh(Junior High School)
PV10kW+BT12kWhEV + Rapid Charger(Village Main Office)
EV + Rapid Charger(Village Sub Office)
BT500kWh*2 Niijima
Wind Observation Tower1 2km
N
WT300kWMeteorological Equipment
National Project
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ConclusionsConclusions• TEPCO's Grid has secured a stable power
supply, utilizing scale merit of large capacity and bulk power transmission.
• Smart Grid will be a platform to realize efficiency and optimization of energy use through a revolution in energy services.
• TEPCO will work to realize this platform with:– Smart meters and new services pursuing the ideal
business model in the liberalized market– Various R&D challenges for the introduction of large-
scale renewables
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Thank yThank you ou ffororyoyour ur aattention!ttention!