Skip to main content

Warning 153 | [Various software] | TOVTEST QCAP argument is too low


Relevant software:

PSS®E
PowerFactory


Emitted message:

Specified QCAP= argument is so low as to cause simulation errors

Description:​

This warning indicates that the QCAP= argument in a TOVTEST command is very low. While not strictly invalid, a very small capacitor value can lead to numerical instability or simulation errors in some power systems software.

danger

This warning indicates that the specified capacitor value may be too small for the simulation software to handle correctly, potentially leading to convergence issues or simulation failure.

Possible impact:​

  • The simulation may fail to converge or may produce unexpected results during the TOV test.

Potential fixes:​

  • Review the QCAP= value: Check the QCAP= value in the TOVTEST command.
  • Ensure the value is realistic: Ensure the value is physically realistic for the intended test.
  • Increase the value: If you are seeing simulation errors, try increasing the QCAP= value to a more reasonable level.