Switzerland (Swissgrid TC-CH 2019) ride-through requirements
Frequency ride-through for Switzerland. Every breakpoint below is read from the code itself, and carries the clause it came from — so you can check it, not just cite it.
What is the frequency ride-through envelope for Switzerland (Swissgrid TC-CH 2019)?
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 49 Hz from 30 min onward — the last band the envelope defines, with no stated end time.
Every breakpoint is stated in the clause cited below.
Applies to Generation and storage on the Swiss transmission grid
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 | no stated end | 49 Hz | Held flat |
The clause this came from
Swissgrid / VSE, 'Transmission Code 2019 (TC-CH)', section 6.5.2, Figure 12 'Robustness against frequency or voltage fluctuations' (p. 47) and paragraph 6.5.2(7) - NOT section 6.5.4; corroborated for storage by Swissgrid CESS minimum requirements v1.1 (29.05.2026), section 4.1, Figure 6.
Who does Switzerland (Swissgrid TC-CH 2019) bind, and since when?
Generation and storage on the Swiss transmission grid. 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 Switzerland (Swissgrid TC-CH 2019). That is a gap on this site, not a statement that Switzerland (Swissgrid TC-CH 2019) 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 Switzerland (Swissgrid TC-CH 2019)
- Does Switzerland (Swissgrid TC-CH 2019) 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 Switzerland (Swissgrid TC-CH 2019) 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 Switzerland (Swissgrid TC-CH 2019) itself?
- Yes. Every breakpoint is read from the code, and each envelope carries the clause it came from, quoted in full under its chart — so you can check the figure against the standard rather than cite it from this page.
- Which events are charted for Switzerland (Swissgrid TC-CH 2019)?
- Switzerland (Swissgrid TC-CH 2019) is charted here with 1 envelope — frequency ride-through (FRT). No low-voltage or high-voltage envelope is charted here — check Switzerland (Swissgrid TC-CH 2019) 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.
Also for Switzerland: Switzerland (Swissgrid CESS minimum)
Elsewhere in Europe: UK G99 (Type D), Austria (E-Control TOR Typ D), Belgium (Federal Grid Code), Denmark (TR 3.3.1), Finland (Fingrid VJV2024), and 13 more