Morocco (CRENT) — ride-through requirements

The HVRT, FRT envelopes a grid-scale battery must meet under Morocco (CRENT), digitized breakpoint by breakpoint and checked against the clause it came from.

By Sergey Syrvachev — Director of Product Engineering at HyperStrong

Applies to: transmission connections — Generation connected to the national transmission grid (CRENT).

Part of: the grid-code ride-through chart — compare this against 65 other standards in 44 countries.

What this is, and is not. A reading aid compiled from the clause cited below — not a compliance document. The primary text governs. Some values on this page are marked partial: the level is confirmed but at least one duration step could not be read directly from the 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. These are the boundaries, not the behaviour: what holding one demands of the converter — reactive current injection, thermal stress, protection timing — is stepped through in the LVRT / HVRT ride-through visual.

EventDutyBreakpointsStatus
high-voltage ride-through (HVRT)ride-through0.001s → 1.2 pu; 20s → 1.2 pu; 20.001s → 1.15 pupartial
frequency ride-through (FRT)ride-throughHigh: 0.1s → 53 Hz; 10s → 53 Hz; 10.001s → 52 Hz | Low: 0.1s → 46.5 Hz; 10s → 46.5 Hz; 10.001s → 47 Hzverified

Where these values come from

  • HVRTCRENT Article 78 §5 'Tenue aux variations de la Tension', table for 225 kV / 150 kV / 60 kV connection voltages (ANRE, anre.ma/crent_chapitre/article-78/).
  • FRTMaroc, Code du Reseau Electrique National de Transport (CRENT), Article 78 §3 'Tenue aux Variations de Frequence', published by ANRE (anre.ma/crent_chapitre/article-78/); CRENT in force since 3 January 2022.

Any event not in the table above is not plotted for this code. Where an absence is itself the finding — a code that defines no high-voltage envelope, or one whose curves circulate under another country's name — it is recorded in the grid codes with no ride-through curve.

Last checked against the source document on .

How Morocco compares

Each event this code defines, put side by side with every other code that defines it:

Other grid codes in Africa