prof. dr. ir. ronnie belmans, k.u. leuven bevoorradingszekerheid in belgiË
TRANSCRIPT
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Prof. Dr. ir. Ronnie Belmans, K.U. Leuven
BEVOORRADINGSZEKERHEID IN BELGIË
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Security of electricity supply "Can we keep the lights on in Belgium?"
Ronnie BelmansProfessor KU Leuven
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The European Framework
Sustainability
Security of supplyCompetitiveness& affordability
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Regulation of
Monopolies
Innovation and
Competitiveness
Low Prices
And Efficiency
Primary Energy
Sources
Reliability and
Quality
Capacity
Inte
rnal
Mar
ket
Security of Supply
Environment
Lisbon Agenda
The European Framework
NaturePreservation
ClimateChange
Kyoto andPost-Kyoto
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Targets:
• A 20% reduction in EU greenhouse gas emissions from 1990 levels;
• Raising the share of EU energy consumption produced from renewable resources to 20%
• A 20% improvement in the EU's energy efficiency.
Climate Action
-20% -20%
+20%
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Targets:
Where are we now?
Climate Action
-20% -20%
+20%
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Binding national targets by 2020 - Belgium 13%
Renewables
End 2012:Wind: 1335 MWPV: 1790 MW
=
On track
POWER
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Effects:o Reduced emission due to economic crisiso More renewable energy
Energy Roadmap 2050
Reducing Greenhouse gas emissions to 80-95% below 1990 levels by 2050
Decarbonisation
On track
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Not on track
Reaction: Energy Efficiency Directive: Binding targets• Public bodies need to buy energy-efficient buildings, products and
services, and refurbish 3% of their buildings each year to drastically reduce their energy consumption.
• Energy utilities have to encourage end users to cut their energy consumption through efficiency improvements
• Industry expected to become more aware of energy-saving possibilities, with large companies required to undertake energy audits every 3 years.
Energy Efficiency
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Increasing energy consumption with trend towards more electrification
Can generation and grid follow?
First conclusion
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Ageing assets
Ronnie Belmans - Areva T&D Comex meeting -
Bremen, Germany11
Source: RWE (CIRED2007)
Source: KEMA (based on data Dutch DSO)
Source: PB Power/IBM(based on data UK DSOs)
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Belgium Nuclear phase out
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E.on shut down?
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• Federal Act of 31 January 2003o Prohibited the building of new nuclear power plants o Limited the operating lives of existing ones to 40 years
(to 2014-2025)o Possibility to be overridden by CREG if Belgium's
security of supply is threatened.
• Effect: Uncertain investment climate no significant investments
Belgium Nuclear phase out
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• 11 march 2011: Fukushima
• 15 march 2011: German Nuclear phase out plano 8 plants shut down (5,065 MW)o Complete phase out by 2022
• Summer 2012: Doel 3 (1.006 MW) and Tihange 2 (1.008 MW) closed due to possible cracks, in the tank containing the reactor’s core.
Belgium Nuclear phase out
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Energy produced in 2011 [%]
Importance of nuclear power in Belgium
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Consequences: Generated Electricity
2011 20120
100020003000400050006000700080009000
10000
Others Wind Water Coal Natural Gas Nuclear
[MW
]Average Production September 2011 vs 2012
[MW] 2011 2012TOTAL 9195 7142DEMAND 8677 8411NET 518 -1269
exporting region importing region
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• Adjustments product mix: o Nuclear power partly replaced by coal o Additional capacity of renewables
• Still total production < demand
Belgium depended on import
Consequences: Generated Electricity
2011 2012TOTAL 9195 7142DEMAND 8677 8411NET 518 -1269
exporting region importing region
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What about transmission
• No margin left• Nuclear: loss of 2 GW
(vessel cracks)
• Nuclear: currently 1 GW planned outage (Doel 4)
• E.on Vilvoorde: 385 MW CCGT out of operation (jan 2014)
• Interconnection capacity: 3.500 MW
• Belgium dependency on imports
• Winter periods
• Finding sellers
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• Forecast said:o Under severe conditions regarding load (temperature)
and generation availability, Belgium might have to rely on structural imports from neighbouring countries
o No lack of energy on the European scale
No problem to import
Situation last year: winter 2011-2012
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• Forecast says:o Belgium: no margin left
• Nuclear capacity• Shut down conventional power plants
o German nuclear moratorium, it is possible that the necessary energy is not available in extreme winter conditions
Possible problem to import
Situation this year: winter 2012-2013
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Europe when facing extreme winter conditions
No Import Required
Imports at least one week during winter
Weekly Imports Required
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• Two critical situations can arise:
1.) Predictable shortage when local generation is insufficient to cover consumption, e.g., at the peak time of the day (traditionally after sunset, around 6:15 p.m. in winter).
What if things go wrong?
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• Two critical situations can arise:
2.) Unexpected incident leading to a major imbalance• Germany: 4 November 2006• Impact on Belgium:
• 800MW of power wasinterrupted (10% demand)
• Quick-start generation units were brought online
What if things go wrong?
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• Who is responsible:o The government, represented by the Minister for Energy
o Power generators/suppliers obliged to balance generation with consumption in its portfolio.
o TSO provides services to maintain a constant balance between generation and consumption in its control area.
Security of supply
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• The market
• TSO
• Smart Gridso Consumerso VPP
Who can solve the problem?
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• Consequences for the market price?o Summer period 2011 vs 2012o 5 day moving average price Belpex
Who can solve the problem: the market?
€ 0.00
€ 10.00
€ 20.00
€ 30.00
€ 40.00
€ 50.00
€ 60.00
5 day Mov. Avg 2011
5 day Mov. Avg. 2012
€/M
Wh
Doel 3 Tihange 2
Price effect moderate
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• Consequences for the Belpex hourly traded volume?o Summer period 2011 vs 2012o 5 day moving average
Who can solve the problem: the market?
01/M
ay
08/M
ay
15/M
ay
22/M
ay
29/M
ay
05/J
un
12/J
un
19/J
un
26/J
un
03/J
ul
10/J
ul
17/J
ul
24/J
ul
31/J
ul
07/A
ug
14/A
ug
21/A
ug
28/A
ug
04/S
ep
11/S
ep
18/S
ep
25/S
ep0.0
500.0
1,000.0
1,500.0
2,000.0
2,500.0
5 Day Mov. Avr 2012
5 Day Mov. Avr. 2011MW
h
Doel 3 Tihange 2
• Volumes on the Belpex have grown 21% year-on-year
• Traded volume: 20.8 % of the Belgian load
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Who can solve the problem: TSO?
“Keep the lights on”
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Responsibilities:• Exploitation and maintenance transmission grid
o Constant monitoring of system conditions o Ensure stable frequency level (50 Hz)o Ensure stable voltage levels
• Grid investementso Ensure security of supplyo Facilitate marketo Accomodate generation
• Interconnections with other control zones
Who can solve the problem: TSO?
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• Constant monitoring of system conditionso State estimation
• To get best possible picture of system conditions• Find a best-fit load flow• Based on metered values
o Contingency analysis• N-1 security rule
• One accident cannot bring the system in danger• Redundancy
Who can solve the problem: TSO?
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• Ensure stable frequency level (50 Hz)o Balance generation & demand
• Generation>Demand Frequency ↗• Generation<Demand Frequency ↘
o 5 steps to tackle a frequency drop in UCTE:
Frequency
Frequency (Hz) Actions
49.8 step 1 : activation of reserves in generation units
49 step 2 : 10-15 % load shedding
48.7 step 3 : additional 10-15 % load shedding
48.4 step 4 : additional 10-15 % load shedding
47.5 step 5 : all generation units operate in island-mode
Who goes first into the dark? Belgian load shedding plan is determined by law. http://staatsbladclip.zita.be/staatsblad/wetten/2005/08/18/wet-2005011264.html
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Frequency
Source: Elia System Operator N.V.
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•Primary control (0-30 seconds)oCompensate for short-term unbalances at local leveloStabilize frequency within range around set pointoFull automatic control
• e.g. -Generation units with speed control -Start-up/shutdown of pumping units
oProvided by many power plantsoPrimary reserves in former UCTE: 3000MW
• cfr. outage of 2 largest plants• of which ±100 MW reserved in Belgium
Who can solve the problem: TSO?
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• Secondary control (30 sec – 15 min)o Control zone with a contingency acts to restore balanceo Adjusting output and start-up of reserve unitso 137 MW reserved in Belgiumo TSO sends signal to providers of secondary reserves
• Every 10 seconds• Providers respond automatically
o Typically gas fired CC units and pumped storageo Compensation
• Reservation Price• Activation Price
Who can solve the problem: TSO?
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• Tertiary control (> 15 min)o Free & assist secondary controlo Manually controlledo Also interruptible load contractso Belgium: 400 MW generators, 261 MW interruptible load
Who can solve the problem: TSO?
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2006 2007 2008 2009
Number of activations
2 0 5 11
Activated volume (MWh)
57 0 1007 1386
Average price of activation (€/MWh)
181 0 137 125
Who can solve the problem: TSO?
Tertiary Control: interruptible load
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Selective load shedding
• After exhausting all other possibilities
• Elia will out role its selective load shedding plan:o Reduces the energy demand of a limited number of
consumers o Amount of time necessary
• Legislation determines which types of consumer are susceptible to outages in the first instance and which must have power
Who can solve the problem: TSO?
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• Which type of consumer?o Economic value of Businesses <> Citizens
• Which Area?o Rural <> Dense populated areaso Economic value of provinces
Antwerp, Brussels <> Limburg
Who can solve the problem: TSO?
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Who can solve the problem: TSO?
Economic value of businesses and households (2001)
Value per district (mlj €)
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Who can solve the problem: TSO?
Also overgeneration may cause problemsIncompressibility of production: wind and solarLack of flexibilityCritical moments 2012
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Who can solve the problem: TSO?
Offshore Grid Proposal by Statnett (Source Statnett, 2008)
Offshore Grid examined in the Greenpeace study (Source: Woyte et al, 2008)
Vision of High Voltage Super Grid (Source: Dowling and Hurley, 2004)
DLR
Czisch
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BUT difficulties in transmission investments• Transmission grid remains a monopoly
o Regulated business• It is all about getting a fair long-term return on investment
o EU does not support merchant projectso How to convince private investors or nationalized ?
• Virtual moratorium on overhead lines• It takes ages to get permissions-Everyone hates them
o NIMBY syndrome• Not In My Back Yard
o NIMTO syndrome• Not In My Term of Office
o Even worse – people go BANANAs• Build Absolutely Nothing Anywhere Near Anything
o Final result – CAVE people• Citizens Against Virtually Everything
Who can solve the problem: TSO?
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• Generation-sideo Energy efficiencyo Nuclearo CCSo Renewables
Who can solve the problem: consumers?
• Demand-sideo Energy efficiency & Intelligent
consumption• Residential
• Smart appliances• Intelligent heating/cooling• insulation
• Transportation• Electric vehicles
Required paradigm shift on the demand-side
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• Smart meters
Consumers respond to pricesignals
Consumers contribute to system balance
Investments in back-up generators
Who can solve the problem: consumers?
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Ronnie Belmans - Areva T&D Comex meeting -
Bremen, Germany
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Who can solve the problem: Smart grids?
User-centric
Stakeholder ownership
Networks renewal
Environmental policy
Distributed and central generation Demand response
Interoperable European Electricity Networks
Liberalisedmarkets
Why SmartGrids?
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Ronnie Belmans - Areva T&D Comex meeting -
Bremen, Germany
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From passive grids towards active grids
• Passive grids = Fit and Forgeto Fault detection: bidirectional flowso Power Quality: responsibility?o Voltage control: responsibility?o Grid Planning: deterministic peak planning, cfr ER P2/5 in UK
Significant grid problems at low levels of decentralized generation
• Active gridso Normal operation
• Curtailment of generation• Reactive power control• Coordinated voltage control by On-Load Tap Changing transformers• Voltage regulators in-line
o Fault situations
Who can solve the problem: Smart grids?
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Ronnie Belmans - Areva T&D Comex meeting -
Bremen, Germany
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Who can solve the problem: VPP?
Virtual Power Plants (VPP)Flexible representation of load & generation, acting as 1 entity towards DSO/TSO
Cell concept (Denmark)Hierarchical structure in the power system in which each cell coordinates local balance (market for DG), clears fault situations and communicates with other cells in energy trading
(Source: www.fenix-project.org) (Source: Risö)
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• Virtual Power Plant: Dispersed generation Dispersed Storage Controllable loads
• Not necessarily by physically connecting plants but by interlinking them via soft technologies (ICT)
• VPP as key delivery mechanism to provide access of DERo to energy market (commercial aggregation)o to ancillary and network management services markets (grid
aggregation) The goal is to manage DER to provide as much services as a
conventional generators
Who can solve the problem: VPP?
Aggregated to work as a conventional power plant
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• Advanced IT is the core element of a virtual power plant!
Who can solve the problem: VPP?
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• Opportunities for VPP Dispatchability: Aggregation creates units dispatchable
by TSO (several MW) and DSO Visibility: Aggregators can give transparency to
TSO/DSO of their aggregated resources, providing real-time information
Deterministic behaviour: Adequate aggregation can perform close to conventional power plants (e.g.: Wind+CHP+DSM)
Entry of new agents: Non-network owners can create value thanks to the existing flexibility of DER and DSM
Who can solve the problem: VPP?
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• Services of VPPo Locally performed ancillary services
• Voltage control and reactive power supply• Optimize grid losses, local power quality• Local (distribution network) congestion management• Islanded operation capacity
o System wide ancillary services Frequency control Active power reserve Network restoration
Who can solve the problem: VPP?
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• Belgian generation capacityo Nuclear unavailability
-2014 MW due to vessel cracks
-1038 MW planned outage currently
o Loss of conventional generation
• European generation capacityo German nuclear phase out
-5,065 MW
Conclusion
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• Lack on investment: need for a positive investment climateo Generation: flexible capacity + replacement aging
infrastructureo Transmission: supergrids
• TSO has a plan + different tools
• Smart grids offers new tools to balance the systemo Flexible consumerso VPP
Conclusion
We need it nowINVESTMENTS
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• Need for energy policy
• Need for investment climate
• Need for permits
• Tell the truth
Final Conclusions