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How to set up and analyse a grid connection (Onshore)

Learn how to include the grid connection in your cost and energy estimates.

Julie Louise Johnsen avatar
Written by Julie Louise Johnsen
Updated this week

๐ŸŒŠ Looking for the offshore version?

A grid connection setup enables:

  • Calculation of electrical losses due to cables and transformers

  • Visualisation of transmission line loading and voltage

  • Granular cost modelling for components


Before you begin

Make sure:

  • Your park has turbines and an inter-array cable layout

  • A park substation that connects the inter-arrays


Step 1: Place a grid connection point

A substation will represent your connection to the external grid (we are working on adding grid connection point as a separate type that is excluded from the power flow analysis). Place it manually from Add menu or use the Power substation centroids GIS layer to locate existing substations:

  • Open GIS layers โ†’ Browse layers, search for Power substation centroids, and click Add to map.

  • Identify the substation, add it to elements, and select type Substation.

โ˜๏ธ Add new or edit a substation type or transmission line type
Open Components and then either edit the inputs of an existing type or add a new one.
โ€‹
โ€‹For substations: Define transformer properties - either input project-specific values or use default values.
โ€‹For transmission lines: Use either your own electrical values or choose from the internal library.

Step 2: Draw the transmission line

Step 3: Enable and analyse grid connection losses

๐Ÿ‘† Make sure that the Grid connection losses under Electrical settings are enabled in Project configuration.

In Production statistics, youโ€™ll see grid connection losses reflected in net energy and capacity factor results.

โœ… Youโ€™ve now set up and analysed a grid connection, with cost and energy impact fully modelled.

๐Ÿ“–Read more about how the electrical calculations in Vind AI are performed here.

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