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Template: KraftNAV - New connection of conventional generation plants

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Template version: v1

Country:

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DE

Software required:

PowerFactory
PSCAD™

Source: TenneT Germany | Power plant grid connection procedure according to KraftNAV | 21 November 2019

Preview of template's gridmo Flow showing Nodes

How to add this template to your project

  1. From within your gridmo project, open the flow dropdown and select 'Add flow'.
  2. Select the template you want to use and click 'Add to project'.

screenshot of the gridmo web app adding a flow to a project

Background​

TenneT Germany is responsible for connecting new generation systems in accordance with KraftNAV. The document, "Kraftwerks-Netzanschlussverfahren nach KraftNAV- Unterlagenliste", which translates to "Power plant grid connection procedure according to KraftNAV document list", contains tests to prove behaviour during particular events.

Reference​

Common assumptions​

  • Supporting documentation like the requirements of Appendix A are required but are not included in this template.
  • The tests in this document focus on the requirements of clause 3.2.
  • The source document primarily refers to connecting "conventional generating plants" (i.e. synchronous generating systems). However, it is assumed that this template can also be used for asynchronous generating systems
  • Although not specifically requested, equivalent tests have been included for PSCAD™ in case of adoption of the software in the future. By default, these Nodes are disabled.
  • gridmo's commands use Xf/Rf, rather than Rf/Xf - as specified in the source document. Equivalent values have been chosen where appropriate.
  • Faults are applied at 5s, not 1s to accommodate running an equivalent simulation in PSCAD™.

3.2.1: Balanced faults​

The purpose of section 3.2.1 is to demonstrate your generating system's ability to ride through balanced faults.

Assumption

gridmo's commands use Xf/Rf, rather than Rf/Xf (i.e. as specified by TenneT). The test requires Rf/Xf = 0, which corresponds to Xf/Rf=INF. We don't currently have the ability to set Xf/Rf = INF. Therefore, Xf/Rf is set as a very high value (i.e. 9999) such that Rf/Xf ≈ 0.

3.2.2: Stability limit​

The purpose of section 3.2.2 is to find the stability limit of your generating system. This test is primarily designed to find the fault duration which will cause a synchronous generator to lose synchronism. However, this test may still be useful for asynchronous generating systems to investigate the system's fault ride-through capability.

Sources​

Revision history​

Version 1 | 6 August 2025​

New
  • First release.
  • N/A