Kenya (KNTGC VRPP) — ride-through requirements

The LVRT, HVRT, FRT envelopes a grid-scale battery must meet under Kenya (KNTGC VRPP) (Kenya), 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 pu; 0.15s → 0 pu; 0.151s → 0.14 pu; 0.77s → 0.14 pu; 0.771s → 0.43 pu; 1.38s → 0.43 pu; 1.381s → 0.71 pu; 2s → 0.71 pu; 2.001s → 0.85 pu; 3s → 0.85 pu; 3.001s → 0.9 pu verified
high-voltage ride-through (HVRT) ride-through 0.001s → 1.2 pu; 2s → 1.2 pu; 2.001s → 1.1 pu verified
frequency ride-through (FRT) ride-through High: 0.1s → 52 Hz; 4s → 52 Hz; 4.001s → 51.5 Hz; 1800s → 51.5 Hz; 1800s → 51 Hz; 3600s → 51 Hz; 3600s → 50.5 Hz | Low: 0.1s → 47 Hz; 20s → 47 Hz; 20.001s → 47.5 Hz; 180s → 47.5 Hz; 180.001s → 48 Hz; 1800s → 48 Hz; 1800s → 49 Hz; 3600s → 49 Hz; 3600s → 49.5 Hz verified

Where these values come from

  • LVRT Kenya National Transmission Grid Code (KNTGC), clause 7.2.3.1 'Fault Ride-through Requirements for VRPPs', Figure 7-2 'Voltage Must Remain Connected Area', Area B — verified against the KETRACO-published KNTGC Final 30-04-2021 (identical clause numbering and wording to the March-2024 edition cited).
  • HVRT KNTGC clause 7.2.3.1(iii), Figure 7-2 Upper Bound / Area D — verified against KNTGC Final 30-04-2021.
  • FRT KNTGC clause 7.2.3.5 and Table 7-1 'Frequency Limits in the Kenya National Transmission System' (plus clause 7.1.3(c) for the 47.0-47.5 Hz / 20 s band) — verified against KNTGC Final 30-04-2021.

Last checked against the source document on .

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