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Thesis work Verification of connection
requirements for wind farms

• A new Grid Code is under development in the EU.
  Entso-e that is working on the new requirements
  has announced that only small changes of the
  current draft are to expect. The new Grid Code
  will result in stricter requirements for
  connection of generators to the grids in Sweden
  and the northern countries. The new requirements
  will contribute to higher investment costs
  regarding devices and power plants, but also more
  comprehensive analysis and tests have to be done,
  to verify that the power plant is fulfilling the
  new requirements. In this thesis work, the aim is
  to estimate how much the investment costs will
  increase and to describe how necessary tests and
  calculations should be done in practice, to
  verify and fulfill the new requirements in Sweden
  and the northern countries. The study will be
  very useful for both grid owners who will make
  the demands on the connection point, and for the
  power plant owners who are responsible for that
  the requirements are fulfilled and due to that,
  have to make demands on the manufactures. The
  thesis work will include - comparing new and old
  requirements, describing the need of new devices,
  describing the possible need of a more robust
  system and developing a proposal on how the tests
  and calculations have to be done. The study can
  also occur measurements and tests in power
  plants, calculations and estimates on how much
  this will increase the costs, due to the new
  requirements. In the study will one or maybe two
  already existing wind farms be used as reference
  plants.
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• Project start planned to August- September 2013

Implementation
Activities

• Study of literature concerning current SvK
  requirements, new EU requirements, ASP
  (Association of larger production facilities) and
  any previous studies on the connection
  requirements.
• Create a checklist with actions for verification
  of a new wind farm according to requirements.
  International requirements, requirements as may
  be decided by Swedish authorities, the
  requirements which may be included as a
  certification from the manufacturer and the
  requirements described in ASP that are not
  included in the EU requirements.
• Develop Study Outlines with descriptions of
  necessary input data, models and methods
  regarding calculations and analysis.
• Develop a test plan for necessary verifying and
  validating of measurements describing how these
  tests should be done in practice.
• Perform measurements and tests according to test
  plan on an existing power plant.
• Perform calculations for verification of the new
  requirements on an existing power plant.
• Describe possible need of a more robust power
  plant and extra control equipment.
• Estimate the increasing investment costs for new
  power plants regarding the new requirements.
• Compile the results in a report, written in
  English, which can be used in Nordisk Vindkrafts
  and Midrocs future projects.

We are looking for

• 1-2 masters students in electrical power
  engineering. The students need to be able to read
  and understand Swedish
• For more information contact
• Pehr Brunnegård, Midroc, 010-4707035
• Pehr.brunnegard_at_midroc.se
• or
• Jonas Strandberg, Nordisk Vindkraft, 031-339 59
  71
• jonas.strandberg_at_nordiskvindkraft.se
• At Chalmers Ola Carlson, 031 772 1637
• ola.carlson_at_chalmers.se

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The thesis work will contain following parts,
which will be time estimated and defined in the
initial phase of the study