Morocco (CRENT) ride-through requirements
High-voltage ride-through, Frequency ride-through for Morocco. Every breakpoint below is read from the code itself, and where a point was taken off a published figure rather than stated in the clause, the section under that chart says so — an envelope the source only partly defines.
What is the high-voltage ride-through envelope for Morocco (CRENT)?
The plant must ride through for any voltage that stays on or below this envelope. The envelope holds 1.2 pu from t = 0 to 20 s; then 1.15 pu from 20 s onward — the last band the envelope defines, with no stated end time.
Covers only the part of the envelope the source defines.
Applies to Generation connected to the national transmission grid (CRENT)
| From | To | Voltage | Between the points |
|---|---|---|---|
| 0 | 20 s | 1.2 pu | Held flat |
| 20 s | no stated end | 1.15 pu | Held flat |
The clause this came from
CRENT 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/).
What is the frequency ride-through envelope for Morocco (CRENT)?
The plant must ride through between the upper and lower bands. The upper (over-frequency) band holds 53 Hz from t = 0 to 10 s; then 52 Hz from 10 s onward — the last band the envelope defines, with no stated end time. The lower (under-frequency) band holds 46.5 Hz from t = 0 to 10 s; then 47 Hz from 10 s onward — the last band the envelope defines, with no stated end time.
Every breakpoint is stated in the clause cited below.
Applies to Generation connected to the national transmission grid (CRENT)
Upper limit
| From | To | Frequency | Between the points |
|---|---|---|---|
| 0 | 10 s | 53 Hz | Held flat |
| 10 s | no stated end | 52 Hz | Held flat |
Lower limit
| From | To | Frequency | Between the points |
|---|---|---|---|
| 0 | 10 s | 46.5 Hz | Held flat |
| 10 s | no stated end | 47 Hz | Held flat |
The clause this came from
Maroc, 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.
Who does Morocco (CRENT) bind, and since when?
Generation connected to the national transmission grid (CRENT). The FRT clause quoted above carries the date of effect — "in force since 3 January 2022".
These figures are a reading aid, not legal advice. Grid codes are reissued: verify against the current edition before you design to them.
Digitised operating parameters beyond ride-through — droop, reactive capability, operating ranges — are published for 36 of the 66 codes in this atlas, not yet for Morocco (CRENT). That is a gap on this site, not a statement that Morocco (CRENT) sets none — the atlas hub marks the codes that carry them.
Curve data last checked against the code on — 66 standards, 130 envelopes, published by bess.engineer under CC BY 4.0.
Questions this page answers about Morocco (CRENT)
- Does Morocco (CRENT) require ride-through, or only that the plant does not trip?
- Ride-through. Every envelope on this page is a performance duty the plant must meet, not a protection-setting no-trip boundary — they are different obligations. That is what these curves are; they are not everything Morocco (CRENT) contains. The requirement sentence under each chart says which side of the curve is the compliant one.
- Are the numbers on this page taken from Morocco (CRENT) itself?
- Every breakpoint is read from the code, and where a point was taken off a published figure rather than stated in the clause, the section under that chart says so — on this page that includes an envelope the source only partly defines. The clause each curve came from is quoted under it.
- Which events are charted for Morocco (CRENT)?
- Morocco (CRENT) is charted here with 2 envelopes — high-voltage ride-through, frequency ride-through (HVRT, FRT). No low-voltage envelope is charted here — check Morocco (CRENT) itself before concluding it sets none.
Ride-through, in context.
An envelope is a compliance boundary; understanding why it exists is a different question. The ride-through and grid-forming entries cover the engineering, and the Engineering Foundations course builds it from the physics up.
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