What new requirements do the new grid-connection standards place on PCS
High and low voltage ride-through, primary frequency regulation and harmonic limits are stricter, and these points require close attention during selection.
The new grid-connection standards place higher demands on the grid support capability of power conversion systems. High and low voltage ride-through, primary frequency regulation response and harmonic limits have all been updated.
Selection Recommendations
When purchasing a PCS, it is advisable to verify the device's low voltage ride-through curve, frequency regulation response time and THDi figures, and to request third-party test reports.
- Low voltage ride-through: longer zero voltage ride-through time
- Primary frequency regulation: faster response time
- Grid-connection harmonics: stricter THDi limits
