WILMAR Wind Power Integration in Liberalised Electricity Markets

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Project Objectives

A fast introduction of large amounts of intermitting renewable power production as wind power can cause technical and economic problems of the power systems. These problems might arise due to unpredictability of wind power or due to unbalance between local power demand and intermitting power produced causing grid instabilities. The main objective of this project is to investigate these problems and to develop a modelling tool, which can be used to simulate alternative solutions providing a firm basis for decision making by system operators, power producers and energy authorities. Both the possibilities for integrating fluctuating power production by optimising the interaction of the existing units in a given electricity system, the possibilities lying in power exchange between regions, and the performance of dedicated integration technologies like electricity storages are evaluated. 

Description of work

The modelling and simulation efforts can be divided into two parts. One part consists in an investigation of the issue of system stability, i.e. the wind integration aspects connected to the fast (below 10 minutes) fluctuations in the wind power production, with the use of dedicated power system simulation tools. It includes the analysis of a number of case studies especially selected for large-scale integration of renewable energy generation and with expected potential stability problems.

Secondly the wind integration ability of large electricity systems with substantial amounts of power trade in power pools is investigated. With the starting point in existing models an hour-per-hour simulation model is developed, and this modelling tool is used to investigate the technical and cost issues of integrating large amounts of wind power into the electricity system. The model will cover the two power pools: NordPool and European Power Exchange, i.e. Germany, Denmark, Norway, Sweden and Finland. The developed model will be tested by different end-users, e.g. systems operators and power producers, which are expected to be users of the final model as well. Finally the results obtained will be summarised and used to provide recommendations about the technical integration possibilities, the integration costs of wind power and the organisation of electricity markets and power pools.

The figure below gives an overview of the workpackages

Expected results

A planning tool suitable for the analysis of the integration of renewable power technologies to be applied by system operators, power producers and energy authorities is developed in the project. The costs connected to the integration of large shares of wind power in a liberalised electricity system will be quantified in the project, and recommendations will be given, about how the electricity and heat markets should be organised to enable exploitation of the most cost-effective mix of wind power integration possibilities in a given electricity system. Finally recommendations about the usefulness and performance of different types of integration measures will be presented.

Duration

The project started in November 2002 and will run for 36 months until October 2005.