A new issue in the planning and operation of
electricity systems is gaining importance with the increase of installed
capacity of wind power, namely the handling of fluctuating electricity
production. Recent projects such as
WILMAR have developed
optimisation models that endogenously include the information contained in wind
power production forecasting to make decisions that are more robust towards the
fluctuations in the wind power production. In the
GreenNet/GreenNet-EU27 project, a tool
for endogenously determining optimal investment strategies in grids with
large-scale wind integration has been developed.
Building on the tools developed and experiences
gained in these projects, the SUPWIND project will demonstrate the applicability
of optimisation models that support transmission system operators (TSOs) and
other relevant actors in both the day to day operation of the power
system and the long-term planning of investment in transmission lines and
In order to advance on these key success
factors, the following objectives are defined:
Therefore the tools developed
in the WILMAR
project will be used as starting point for the development and application
of a set of decision support tools. These tools are expected to contribute
to substantial improvements in the cost effectiveness of grid operation and
the security of supply with increased fluctuating renewables.
The set of tools developed
project will be extended and complemented. The application of the improved
tools will demonstrate their usefulness by assessing new investments, new
operation modes and changes in the market structure.
A particular focus will be
laid on the comparative analysis of different market designs and their
capability to cope with increasing shares of fluctuating wind energy.
System operators have so far only partly
been interested in detailed models for operating grids with increased wind
energy shares. Currently this is mainly an issue for operators in Denmark
and Germany. But with the EU strategy to increase the share of Renewables
throughout the EU the issue becomes of increasing relevance also for other
countries. By demonstrating the successful application of such management
tools both in countries with a high share of fluctuating renewables and in
others, the consortium aims at proving the relevance of such approaches.
The project contributes to secure the
operation of the European electricity supply system and to develop it
further in view of a sustainable energy future. Through the development of
detailed simulation and optimisation models and their application, the
project allows to identify system configurations and operation modes which
fulfil best the concurrent and partly conflicting objectives for sustainable
electricity systems: security of supply, economic efficiency and
environmental friendliness. It thereby focuses on the large scale
integration of wind energy, which is expected to contribute substantially to
the reduction of CO2 and other emissions but at the same time raises new
challenges for guaranteeing the security of supply given the large scale
The tools developed in the
project have already been tested by grid and plant operators in the
Scandinavian electricity system. The new set of tools will be specifically
designed to fit the different analysis and planning needs of the various
actors in liberalised electricity markets with high wind energy penetration.
The project especially contributes to an
improved ex-ante assessment of the impacts of increased renewables
generation on the electric grid and notably to the assessment of
corresponding risks. The primary stakeholders interested by these analyses
are grid operators, but also wind farm and power plant operators.
The grid operators are the primary
addressees of the newly developed tools. On an operational level, the
developed tools will allow the dispatchers to assess ex-ante the
implications of extreme events (e.g. maximum wind supply at minimum load) by
running simulations of the grid and system operation. This enables the
operators to analyse the effectiveness of possible counter-measures and to
be thus better prepared to such extreme events. By providing a connection to
online wind measurements and power plant data as well as corresponding
analysis tools, the operation tools allow furthermore to identify
potentially critical situations at an early stage and provide hence the
operators an increased response time lag.
Furthermore by including load uncertainty
and stochastic outages of power plants and transmission lines in the tools
used in operational planning, estimates of the need for power reserves in
different supply and wind prediction situations can be made. Thereby the
reservation of power reserves made by transmission system operators can be
The strategic decision support provided to
the grid companies is based on the detailed analysis of the operational
characteristics of the electricity system. The tools used for this purpose
are incorporating detailed simulations of the grid and market operations
derived from the day-to-day operation management. At the same time the
strategic analysis tools allow to define scenarios, which enable the grid
companies to assess the usefulness and viability of investments under
various assumptions. Especially transmission line investments can be
evaluated with the strategic analysis tools but also investment in dedicated
wind power integration measures such as electricity storages can be assessed
with these tools.
Wind farm and power plant
The wind farm and other power plant
operators are benefiting similarly to the grid operators from the
operational management tools developed in the project. The connection to
online wind measurements will allow the operators to adapt timely the
production schedules of their power plants or/and to submit appropriate bids
on spot and reserve markets. Also for strategic planning, they may use the
corresponding tool to assess the viability of new investments in the future
market. Also the developers of wind farms and corresponding hardware and
software will benefit from the analyses carried out through improved data
and concepts for assessing the profitability of new projects. Furthermore
they can derive from the analyses carried out the value of technical
improvements or increased geographical diversification in a system context.
Contribution to policy
Important stakeholders in this field are market operators,
regulators as well as national governments and the EU. The benefits of
SUPWIND for these stakeholders are summarized in the following.
operators and regulators
Market operators and regulators will benefit mostly from the
application studies carried out within the project. They will gain detailed
insight into the environmental, economic and system stability impacts of
various alternative market designs and regulation modes. The analyses will
e.g. highlight the pros and cons of day-ahead vs. hour-ahead spot markets
and of various types of reserve market operation (e.g. German model,
Scandinavian model, UK model). Thus the efficiency of the market and system
operation will be improved, contributing to an increased competitiveness of
the European electricity system, which will in turn enhance the
competitiveness of the European industry through reduced electricity costs.
National Governments and the European Commission can benefit
from the project outcomes insofar as the project will provide detailed
insights into the feasibility and the cost of wind energy integration in
various EU member states. It will analyse in detail the impacts of increased
on-shore and off-shore wind production on grid operation and necessary grid
investments. Also the value of new storage technologies and capacities is
analysed under different scenarios in the case studies. By analysing the
required investments not only from a national but also from a European
perspective, the project will enable the decision makers to analyse also the
trade-offs between investments in cross-border transmission capacities and
reinforcements of the national grids.
Description of work
In order to
achieve the objectives, two phases comprising a total of nine work packages are
foreseen. Phase I covers the first 18 months of the project duration and is
completed, when the key research activities, being WP 2 and WP 3, are completed.
Phase II is entirely devoted to the application of the developed extended tools
in several case studies.
work package structure is as follows:
covers the general project management activities.
WP2 and 3 are
key research activities, since the tools necessary to achieve the objectives of
the project are developed there. In
the functionality of the Wilmar Planning Tool is extended to include evaluation
of transmission line and power plant investments.
extends the Wilmar Planning Tool by including online status information of power
plants and transmission lines and online wind power forecast data. The tool will
be extended to include load uncertainty and stochastic outages in the stochastic
As part of the demonstration
of the applicability of the tools, the input data to these decision support
tools has to be collected. This includes data for the existing power systems in
the EU and scenarios for the development of the power systems in the future.
takes care of the scenario generation, and
addresses the collection of data for the present power systems. WP4 develop
possible overall scenarios on the future of the European electricity market.
extends the data bases constructed in the
projects to cover EU27 except
Cyprus and Malta but including Norway and Switzerland. Furthermore the data
needed to analyse more specific operational cases, such as the operation of the
Nordel system in a situation with large scale installation of onshore and
offshore wind power in the Nordic countries, will be collected in close
corporation with the relevant TSO.
the European Power System scenarios developed in WP4 are analysed with the
strategic planning tool complemented with input from the analysis of selected
operational cases. The scenarios will focus on large scale deployment of wind
power and the resulting need and costs of investments in transmission lines and
new flexible generation facilities including storages. Covering EU27, the tool
will enable analysis of the bottlenecks arising in the European power system as
a result of the location of wind power in high wind resource areas being in some
cases remotely situated relatively to the high consumption centres.
selected operational cases will be analysed in close corporation between model
developers and TSOs. The results from the strategic planning tool will provide
boundary conditions for the geographical cases selected. Each case will be
evaluated with regard to the usefulness of the operational tool in helping with
the day to day planning especially the estimate of the need for power reserves.
The specific issues related to inclusion of online power system data in the
operational tool will be analysed for each case. Furthermore the ability of the
operational tool in testing the robustness of the power system towards extreme
events will be evaluated.
will analyse changes in the market design for day-ahead and regulating power
markets and use the tools developed in WP2 and WP3 to see how much this
influences the feasibility and costs of wind power integration.
WPs are complemented by WPs devoted to internal and external communication
issues, notably project management (WP1)
and dissemination (WP9).
Graphical presentation of work packages
Work plan and time table
The project started in
October 2006 and will run for 36 months until September 2009.