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Grid Thumper

A new way to test the stability of microgrids, back-up power systems, and distribution grids

Precision load bank and data recorder for mission-critical resiliency testing

The PSL Grid Thumper™ is a tool for testing, measuring and characterizing the stability of the electric grid. By drawing large precisely timed pulses of resistive and reactive power, Grid Thumper subtly perturbs local steady-state voltage and phase angles so as to reveal unique stability characteristics of the local grid.

  • What is the natural frequency where forced oscillations will have the greatest effect?
  • What is the damping coefficient (i.e., how long do oscillations “ring”)?
  • How “rigid” is the grid ?
  • How do distributed energy resources affect grid stability?

PSL provides a shipping container sized device that is placed on customer-selected sites to conduct active grid-probing tests in various modes of operation. Precision PSL sensors measure test events locally and selected distances from the source. Time stamped data is compiled in a database for analysis.

Power Standards Lab
980 Atlantic Ave.
Alameda, California 94501
TEL: ++1.510.522.4400
US: 1.888.SEMI.F47 or 1.888.736.4347

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