Turkey (TEİAŞ Şebeke Yönetmeliği Ek-18) ride-through requirements
Low-voltage ride-through, Frequency ride-through for Turkey. 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 that stops where its published chart stops or a curve with no recorded source class.
What is the low-voltage ride-through envelope for Turkey (TEİAŞ Şebeke Yönetmeliği Ek-18)?
The plant must ride through for any voltage that stays on or above this envelope. The envelope holds 0 pu from t = 0 to 150 ms; then ramps linearly from 0 pu at 150 ms to 0.9 pu at 1.5 s; then 0.9 pu from 1.5 s, plotted to 2 s.
The clause states this boundary as a line; intermediate points are interpolated between its stated vertices. The envelope stops where the published chart stops; the code states no end time. Check these points against the clause quoted below before relying on them.
| From | To | Voltage | Between the points |
|---|---|---|---|
| 0 | 150 ms | 0 pu | Held flat |
| 150 ms | 1.5 s | 0 → 0.9 pu | Ramps linearly |
| 1.5 s | plotted to 2 s | 0.9 pu | Held flat |
The clause this came from
Elektrik Şebeke Yönetmeliği (EPDK/TEİAŞ), EK-18 §E.18.2 'ÜRETİM TESİSLERİNİN ARIZA SONRASI SİSTEME KATKISI' + Şekil E.18.1, as introduced by the amendment of 22.04.2017 (Resmî Gazete 30046) — verified in the official annex PDF resmigazete.gov.tr/eskiler/2017/04/20170422-8-1.pdf, p. 1. The code defines a linear recovery ramp; the vertices are read from the clause and the chart draws the segment between them.
What is the frequency ride-through envelope for Turkey (TEİAŞ Şebeke Yönetmeliği Ek-18)?
The plant must ride through between the upper and lower bands. The upper (over-frequency) band holds 51.5 Hz from t = 0 to 30 min; then 51 Hz from 30 min onward — the last band the envelope defines, with no stated end time. The lower (under-frequency) band holds 47.5 Hz from t = 0 to 30 min; then 48.5 Hz from 30 min to 60 min; then 49 Hz from 60 min onward — the last band the envelope defines, with no stated end time.
Check these points against the clause quoted below before relying on them.
Upper limit
| From | To | Frequency | Between the points |
|---|---|---|---|
| 0 | 30 min | 51.5 Hz | Held flat |
| 30 min | no stated end | 51 Hz | Held flat |
Lower limit
| From | To | Frequency | Between the points |
|---|---|---|---|
| 0 | 30 min | 47.5 Hz | Held flat |
| 30 min | 60 min | 48.5 Hz | Held flat |
| 60 min | no stated end | 49 Hz | Held flat |
The clause this came from
Elektrik Şebeke Yönetmeliği, EK-18 §E.18.4 'FREKANS TEPKİSİ' as replaced by MADDE 10 of the amending regulation of 21.01.2025 (Resmî Gazete 32789), Tablo E.18.1 'Rüzgar ve güneş enerjisine dayalı fotovoltaik üretim tesisleri için frekans aralıklarındaki çalışma süreleri'.
Who does Turkey (TEİAŞ Şebeke Yönetmeliği Ek-18) bind, and since when?
This code does not carry a short scope statement — read the clause quoted above for who it binds. No date of effect is published here — grid codes are reissued, so check the current issue before relying on it.
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 Turkey (TEİAŞ Şebeke Yönetmeliği Ek-18). That is a gap on this site, not a statement that Turkey (TEİAŞ Şebeke Yönetmeliği Ek-18) 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 Turkey (TEİAŞ Şebeke Yönetmeliği Ek-18)
- Does Turkey (TEİAŞ Şebeke Yönetmeliği Ek-18) 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 Turkey (TEİAŞ Şebeke Yönetmeliği Ek-18) 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 Turkey (TEİAŞ Şebeke Yönetmeliği Ek-18) 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 that stops where its published chart stops or a curve with no recorded source class. The clause each curve came from is quoted under it.
- Which events are charted for Turkey (TEİAŞ Şebeke Yönetmeliği Ek-18)?
- Turkey (TEİAŞ Şebeke Yönetmeliği Ek-18) is charted here with 2 envelopes — low-voltage ride-through, frequency ride-through (LVRT, FRT). No high-voltage envelope is charted here — check Turkey (TEİAŞ Şebeke Yönetmeliği Ek-18) 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.
Elsewhere in Europe: France (RTE), Germany (VDE-AR-N 4120, draft summary), Greece (ADMIE/IPTO RfG), Ireland (EirGrid), Italy (TERNA), Netherlands (TenneT), and 13 more