Ireland (EirGrid) — ride-through requirements

The LVRT envelope a grid-scale battery must meet under Ireland (EirGrid) (Ireland), digitized breakpoint by breakpoint and checked against the clause it came from.

By Sergey Syrvachev — Director of Product Engineering, grid-scale BESS · 10+ GWh delivered

Part of: the grid-code ride-through chart — compare this against 63 other standards in 42 countries.

What this is, and is not. A reading aid compiled from the clause cited below — not a compliance document. The primary text governs. Every value here was read from a current primary source.

Breakpoints

Times are seconds from the start of the disturbance. Voltage is per-unit of nominal; frequency in hertz. An LVRT curve is a lower boundary (stay connected while voltage is on or above it), an HVRT curve an upper boundary, and FRT gives the band between its High and Low boundaries.

Event Duty Breakpoints Status
low-voltage ride-through (LVRT) ride-through 0.001s → 0.15 pu; 0.625s → 0.15 pu; 0.626s → 0.209 pu; 1s → 0.209 pu; 1.001s → 0.347 pu; 1.5s → 0.347 pu; 1.501s → 0.505 pu; 2s → 0.505 pu; 2.001s → 0.663 pu; 2.5s → 0.663 pu; 2.501s → 0.821 pu; 3s → 0.821 pu; 3.001s → 0.9 pu verified

Where these values come from

  • LVRT EirGrid Grid Code v6 (22 July 2015), clause WFPS1.4.1 and Figure WFPS1.1 'Fault Ride-Through Capability of Controllable WFPSs': heavy black boundary at 15% U/Un from 0 to 625 ms, rising linearly to 90% at 3000 ms; axis ticks 0, 150, 625, 3000 ms. Verified by rendering the figure page directly.

Last checked against the source document on .

Other grid codes in Europe