the role of advanced technologies in power interconnection
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The role of advanced technologies in power interconnection
and emergency disaster response
Global Energy Interconnection Development and Cooperation Organization
May, 2020
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2. Measures against COVID-19
3. Advanced technologies on
Transmission and Smart Grid
4. Epilogue
1. COVID-19 in China
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1.1 COVID-19 in China—progress
2019.12.31
Wuhan reported 27
cases of pneumonia
with unknown cause
2020.01.29
Every province in China
reported COVID-19
Outbreak
2020.02.19
The first time new
cases per day lower
than 1000 in China
WHO upgraded its
coronavirus risk
assessment to “very high”
2020.02.28
ModeratedControlled and
work resumption
In China, COVID-19 is now under
control, and work and production is
being resumed in an ordered manner.
Now
3
In Worldwide, COVID-19 is growing
as a pandemic.
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1.2 COVID-19 in China—actions
Open and transparent
announcement
Separation and
traffic control
Timely and professional
treatment
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1.3 COVID-19 in China—work resumption
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Region-specific and risk-based
resumption of work
New infrastructure
development
Blockchain
Information infrastructure
5G IDC
Integrated infrastructure
Intelligent
transportation
Energy
Internet
Innovation infrastructure
Industrial
technology
Major science
and technology
Ensure employment and
help enterprises
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2. Measures against COVID-19
1. COVID-19 in China
3. Advanced technologies on
Transmission and Smart Grid
4. Epilogue
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2.1.1 SGCC—against COVID-19
Ensure power supply
—— 150,000 staffs and 1,000 emergency
generator cars
Support construction of mobile hospitals
——power supply for Huoshenshan
hospital within 5 days
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2.1.2 SGCC—for resumption
Restart key projects
—— UHV constructionFocus on new infrastructure
—— e.g. EV charging station
Reduce social electricity costs
—— 48.9 billion yuan
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① Interconnected large power grid constructs the base structure for
rapid response.
Northwest·
Southern
East
North-central
Tibet
2.2.1 Key foundations for F&E response
— National-wide Interconnected power grid
China’s power grid has experienced
the development process of voltage levels
from low to high, and the scale of
interconnection from small to large. Up to
now, six AC synchronous grids has been
formed, including North-central, East,
Northeast, Northwest, Southern China and
Tibet. The Interconnected power grid can
bring backup and mutual aid into full play in
case of emergency.
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Strong & Smart
Grid
Strong & Smart Grid
− the UHV backbone grid
− ICT-based , automated
and interactive
Smart Strong
② Intelligent and efficient grid infrastructure provide favorable
conditions for F&E response.
2.2.2 Key foundations for F&E response
— Wide application of smart grid
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National load dispatch centre
Regional dispatch centre
Provincial and county
dispatch centre
③ Unified dispatching and management make large power grid reach its
full potential.
For a long time, China has implemented
the integrated operation mechanism of power
grid dispatch, which realized efficient dispatching
and coordinated operation of power system and
reduced the risk of serious power grid accidents.
In normal times, the benefit of peak shave could
be obtained. In case of accidental disasters,
power grid of neighboring provinces and regions
can be used for emergency support. The
integrated operation mechanism of power grid
dispatch is the key foundation for fast and
efficient response in fighting against COVID-19.
2.2.3 Key foundations for F&E response
— Unified and strong management
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2. Measures against COVID-19
1. COVID-19 in China
3. Advanced technologies on
Transmission and Smart Grid
4. Epilogue
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transmission corridor(m/GW)
Larger transmission capacity
4~5 times
1GW(Natural Power)
2~3 times
Below 500 km
1/3~1/4
1/2~1/3
55m
±800kV 2~3 times
2 times±800kV
±500kV
Below 1/2±800kV
±500kV
±800kV
±500kV
3 GW
Below 1000 km
12.3 m
±1100kV 4~5 times
±1100kV 4~5 times
±1100kV Below 1/4
±500kV
4.5 m
3.7 m±1100kV
Loss per 100 km: 1%
3.1.1 UHV Technical Advantages
larger transmission capacity, longer transmission distance, lower transmission loss and
narrower transmission corridor.
Longer transmission distance
Lower transmission loss
Narrower transmission corridor
Loss per 1000 km: 8%
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⚫ UHV AC Technology & Equipment
➢ UHV GIS
➢ UHV series capacitor
➢ UHV controllable shunt reactor
➢ UHV grid power flow controller
➢ UHV control and protection equipment
⚫ UHV DC Technology & Equipment
➢ Complete equipment of DC power transmission
➢ UHV DC circuit breaker
➢ UHV DC flexible converter valve
➢ UHV DC cable
➢ Control and protection equipment for hybrid UHV
DC power transmission
⚫ T&E for New Types of Power Transmission
➢ Superconducting power transmission
➢ Gas insulated power transmission
3.1.2 UHV Transmission Technologies
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3.1.3 Research Direction
— (1) UHV AC Technology & Equipment
➢ UHV GIS➢ UHV GIS equipment with a long life span
➢ UHV AC instrument transformers in extremely cold, extremely hot and
other special environments
➢ UHV lightning arresters with high discharge current capacity, low
residual voltage and high voltage ratio
➢ UHV series capacitor➢ UHV series compensator for special environments such as extremely
cold, extremely hot, and high altitude
➢ High-power density capacitors, large-capacity solid state switches,
and other primary devices
➢ Scheme of compact series compensation platform
➢ UHV controllable shunt reactor➢ UHV-CSR with quick response and high compensation capacity
➢ Special UHV-CSR for extreme environments
➢ UHV grid power flow controller➢ Main circuit topology of reliable, flexible and economical power flow
control
➢ Prototype of mixed-type PFC
➢ UHV control and protection equipment➢ UHV AC control protection equipment for transnational and
intercontinental power grid interconnection
➢ New relay protection device based on state of the art technologies
1000kV AC arrester1000kV fixed series capacitor
500kV controllable reactor 500kV UPFC
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±500kV/25kA HVDC breaker
➢ Complete equipment of DC power
transmission➢ Prototype of ±1500kV converter valve, converter transformer,
and instrument transformer
➢ ±1500kV gas insulated DC circuit breakers, and DC bushing
➢ UHV equipment and DC bushings for extreme environments
➢ DC circuit breaker➢ Optimized design for the topology of UHV DC circuit breaks
➢ High-Speed mechanical switch and DC circuit breaker integrated
design technology
➢ Prototype of ±800kV UHV DC circuit breaker for engineering
applications
➢ Converter valve for UHV flexible DC➢ Optimized design of converter valve topology
➢ ±800kV/10GVA UHV DC flexible converter valve
➢ UHV DC cable➢ ±800kV and above DC cable systems
➢ Control and protection equipment for hybrid
UHV DC power transmission➢ DC power transmission control and protection technology, and
rapid recovery technology
➢ Converter station coordinating control technology, and ultra-high
speed communication technology
3.1.3 Research Direction — (2) UHV DC Technology & Equipment
±1100kV/650MVA converter transformer
Flexible DC converter valve towerCross-linked polyethylene DC
submarine cable
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上海
武汉
苏州
福州
南京
浙北
郑州
淮南
浙南
浙中
长沙
皖南
南昌
济南
泰州
潍坊
蒙西
临沂
晋中石家庄
青州晋东南
晋北
北京西
枣庄
榆横
天津南
北京东
张北
荆门
哈密
奉贤苏南
绍兴浙西
湘潭金沙江I期
锡盟
酒泉
准东
上海庙
南阳
宁东
扎鲁特
陕北
胜利
锦屏
菏泽
雅中
驻马店
青海
锡盟
2020
至厦门17
• 14 in operation
• 5 under construction
• 5 planned
• Total length > 20000 km
• Total power > 26 MVA
3.1.4 UHV Development in China
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Strong & Smart Grid
➢ based on the UHV backbone grid
and coordinating the development
of subordinate grids at all levels
➢ optimize energy resources
allocation, improve clean energy
integration, and hence facilitate
meeting power demand growth
3.2.1 Strong & Smart Grid — Connotation
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Strong &
Reliable
Clean &
Environmentally friendly
Friendly &
Interactive
Open &
Transparent
Economical &
Efficient
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⚫ T&E for Power Distribution
& Utilization ➢ Active distribution network
➢ Intelligent power utilization
➢ Charging and discharging of
electric vehicle
➢ Onshore power supply
⚫ T&E for Information
Communication ➢ Communication infrastructure
➢ Intelligent big data analysis
➢ Distributed cloud data center
➢ Mobile interconnection
➢ AI cognition
➢ Information security and
credibility
➢ Grid cyber-physical systems
➢ Energy interconnection of
smart city
3.2.2 Smart Grid — Technologies
⚫ T&E for AC power Transmission and Transformation➢ Flexible AC power
transmission equipment
➢ Smart HV equipment
➢ Smart substation
➢ Substation protection,
measuring and control
➢ Intelligent O&M
⚫ T&E for DC Grid➢ DC grid fault current limiter
➢ HV DC-DC converter
➢ Super-speed fault locating and
protection device
➢ DC grid power flow controller
➢ Intelligent DC network control
➢ Wide-bandgap power
electronic device
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3.2.3 Smart Grid—Key Equipment
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Inspection Robot UAV For Transmission Line Inspection
On-line monitoringdevice for
transformer oil
On-line monitoring
device for lightningarrester
Temperaturemeasuring device
Video monitoringdevice
Monitoring device forinsulator gravity and
leakage current
Monitoring device formicro-meteorological
phenomena
On-line monitoringsystem for ice coatingon transmission lines
G-sensor
Substation Transmission line
Condition Monitoring DevicesSmart dispatching system
EV Battery Charging and
Swapping FacilitySmart Meter
Merging Unit
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3.2.4 Research Direction— T&E for Information Communication
➢ Communication infrastructure➢ Space-earth coordinated intercontinental backbone of
communication network
➢ Coordinated utilization of multiple technologies for
communication network access
➢ Intelligent big data analysis platform➢ Storage and parallel computing of multi-source isomerous data
➢ Multi-level coordinated analysis of wide-area distributed data
➢ Forecast and early warning of GEI based on multi-source data
➢ Distributed cloud data center➢ Software/hardware framework and realization of high-performance
cloud computing platform
➢ Automatic O&M of data center
➢ Centralized O&M system of distributed cloud data centers
➢ AI cognition➢ Deep learning engine for power cables
➢ Multi-modal information processing platforms and terminals
➢ Information security and credibility➢ R&D on security and credibility mechanism and hardware/software
➢ Quantum cryptographic communication technologies and devicesManagement and control platform of
operation inspection of power grid
Early warning platform for risk monitoring of
power grid and information security
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3. Advanced technologies on
Transmission and Smart Grid
4. Epilogue
2. Measures against COVID-19
1. COVID-19 in China
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Power interconnection improves the power system resource allocation and ability to
respond to emergencies. The Global Energy Interconnection is a systemic solution for
global energy green transformation, climate change, environment and health issues.
Addressing climate change is an eternal challenge for human beings, the trend of
energy transformation will not be affected by this epidemic. Now COVID-19 has become a
disaster for mankind. No matter fighting against pandemic or climate change, all the
countries need to work together to build a clean, low-carbon and sustainable society.
Epilogue
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