Transcript Low Carbon London - Isaac Newton Institute

DNO Challenges
Change is the only constant
Agenda
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Distribution Network Operators
Electricity supply chain
UK Power Networks
Regulation – Ofgem
How to manage a network
Changes bringing challenges
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 2011. UK Power Networks. All rights reserved
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Distribution Network Operators
• Manage the distribution networks
from 132 kV to 400 V
• Monitor these networks
• Restore supplies following a fault
• Enable distributed generation
• Provide new connections
• Provide a level of security
24 April 2013
 2011. UK Power Networks. All rights reserved
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System voltages
132kV
132kV
132kV
132kV
11kV
66/33/22kV
National
Grid
400/275kV
400/230V
11kV
25kV
traction
supplies
Industrial & large
commercial
400/230V
Domestic & small
commercial
24 April 2013
 2011. UK Power Networks. All rights reserved
About UK Power Networks
• Since 1 November 2010 UK Power
Networks has been owned by the
Cheung Kong Group (CKG).
• UK Power Networks plans, constructs,
operates and maintains three
distribution networks in our regulated
business.
• Altogether, there are 170,000 km of
underground cables and overhead lines
and more than 130,000 substations.
• We also carry out these services for
customers who have their own Private
Distribution networks in our unregulated
business.
• We have 5,500 employees.
24 April 2013
 2011. UK Power Networks. All rights reserved
Operations Centre
Tactical Centres
Emergency Resource
Centres
What we do
• Our regulated business is responsible
for distributing electricity to a quarter of
the UK’s population, providing power
to eight million homes and businesses
across London, the South East and
East of England.
• We own and operate the network of
underground cables and overhead
power lines that bring electricity to the
customer.
• We are one of the largest developers
of electricity networks in the UK.
24 April 2013
 2011. UK Power Networks. All rights reserved
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The Regulator - Ofgem
• The Office of the Gas and Electricity Markets.
• Protecting consumers is their first priority.
• They do this by promoting competition and regulating the monopoly
companies
• The interests of consumers are taken as a whole, including their
interests in the reduction of greenhouse gases and in the security of
the supply.
• Price Control Mechanisms are changing
– From 2015 RIIO ED1 comes into force
– Revenue = Incentives + Innovation + Outputs
• Emphasis on incentives to drive the innovation needed to deliver a
sustainable energy network at value for money to existing and future
consumers.
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 2011. UK Power Networks. All rights reserved
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Networks around Cambridge
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 2011. UK Power Networks. All rights reserved
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Schematic diagrams
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 2011. UK Power Networks. All rights reserved
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A Typical 11 kV Distribution Network
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 2011. UK Power Networks. All rights reserved
A Typical LV Distribution Network
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 2011. UK Power Networks. All rights reserved
Typical Primary Substation Demand Curve
How much demand is masked by generation?
DG with CB postcodes numbers 2600 and 8.5 MW mostly PV.
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 2011. UK Power Networks. All rights reserved
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Distributed Generation
• Small scale Generation connected to the low voltage and
11kV networks.
• Connected to domestic and commercial premises
• What impact do they have?
• Clusters
• Reverse power flow
• Triggers network investment
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 2011. UK Power Networks. All rights reserved
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Increased Levels of Distribution Monitoring
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 2011. UK Power Networks. All rights reserved
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The Next Twenty Years
• What could the network look
like?
• Work of Supergen 1 scenarios
• DECC Foresight workshops
• How much of the network will
change?
• Targets of 20% by 2020 and
beyond
• Will the network be flexible
enough?
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 2011. UK Power Networks. All rights reserved
What are we doing about it?
• Currently we model the worse case scenario
• Does PV assist the network during peak demand
periods?
• Could we do something different?
• Ofgem Introduced Low Carbon Network Fund
• UK Power Networks has three tier 2 projects
– Low Carbon London
– Flexible Plug and Play
– Smarter Network Storage
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 2011. UK Power Networks. All rights reserved
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Low Carbon London - A learning
journey
Learning how to create a smart low carbon city
Low Carbon London
A pioneering demonstration project,
trialling new technologies, commercial
innovation and strategies…
 Distributed generation
 Electric vehicles and heat pumps
 Smart meters
 Demand Side Management
 Wind Twinning
 Learning Lab
 Video
 Conclusions
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 2011. UK Power Networks. All rights reserved
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Flexible Plug and Play
Cheaper and faster
connection of
renewable generation
to the network by
trialling smart
technologies and
smart commercial
agreements
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 2011. UK Power Networks. All rights reserved
Existing renewable
generation projects:
 100 MW
Proposed renewable
generation projects:
 200 MW
Trial Location
Characteristics:
 Thermal/Voltage
Constraints
 Reverse Power Flow
 Legacy protection
arrangements
Smarter Network Storage
Storage Hardware
Storage
Commercial
Models
Smart Control &
Operating
Systems
24 April 2013
• Storage Technology assessments and procurement
• Installation and commissioning of storage unit at Leighton Buzzard
primary (6MW / 10MWh expand to 8MW / 24 MWh)
• Investigation of the value in a range of different ownership and
operating models, leveraging benefits from:
• Peak-lopping for network support – avoiding UKPN
reinforcement
• Transmission system stability and reserve – STOR and
Frequency Response
• Energy arbitrage and market trading opportunities
• Investigation and development of smart control and operating system
to maximise the value from storage, and facilitate shared utilisation,
network visibility and management
 2011. UK Power Networks. All rights reserved
Smart Meters by 2019
• Every domestic and SME will have a smart meter.
• Energy suppliers will have accurate kWh profiles
• Small scale generation will no longer be assumed use
• Will this produce value for the DNO?
• Will customers wish to participate in ToU tariffs?
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 2011. UK Power Networks. All rights reserved
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Challenges facing us
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Tsunami of data approaching
Storage of necessary data
Facilitate DG connections
Understand the impact of Demand Response
How can we increase our network awareness with
limited monitoring?
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 2011. UK Power Networks. All rights reserved
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