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Error 129 | [Various software] | Invalid internode variable definition


Relevant software:

PSS®E
PowerFactory
PSCAD™


Emitted message:

Internode variable definition appears incomplete - you might be missing a curly bracket

Description:​

This error indicates that an Internode Variable has been defined with incorrect syntax. This is often due to a missing curly bracket {{ or }}.

Internode Variables are used to pass data between different Nodes in a gridmo project. They must follow a specific format to be recognised by the gridmo Engine.

For example, the following Internode Variable is invalid as it is missing a closing double curly bracket }}.

{{variable_name}
danger

This error indicates a syntax issue that will prevent the gridmo Engine from correctly resolving the variable, which will likely cause the task to fail.

Possible impact:​

  • The simulation will fail to start or will terminate when it attempts to use the malformed variable - as the gridmo Engine cannot resolve what value should be used in place of the Internode Variable.

Potential fixes:​

To resolve this error, you need to correct the syntax of the Internode Variable.

  • Check the syntax: Review the field where the error occurred. Internode variables must be in the format {{variable_name}}.
  • Ensure matching brackets: Make sure that every opening curly bracket {{} has a corresponding closing curly bracket }}.