Mexico (Codigo de Red) — ride-through requirements

The LVRT, HVRT, FRT envelopes a grid-scale battery must meet under Mexico (Codigo de Red), digitized breakpoint by breakpoint and checked against the clause it came from.

By Sergey Syrvachev — Director of Product Engineering at HyperStrong

Applies to: both connections — Power plants interconnecting to the SEN (RNT or RGD).

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. 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. 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
low-voltage ride-through (LVRT)ride-through0.001s → 0 pu; 0.25s → 0 pu; 0.35s → 0 pu; 0.45s → 0 pu; ↗ 1.05s → 0.45 pu; ↗ 1.5s → 0.9 puverified
high-voltage ride-through (HVRT)ride-through0.001s → 1.3 pu; 0.2s → 1.3 pu; 0.201s → 1.1 puverified
frequency ride-through (FRT)ride-throughHigh: 0.1s → 62.4 Hz; 900s → 62.4 Hz; 900.001s → 61.8 Hz; 1800s → 61.8 Hz; 1800.001s → 61.2 Hz | Low: 0.1s → 57 Hz; 900s → 57 Hz; 900.001s → 58.2 Hz; 1800s → 58.2 Hz; 1800.001s → 58.8 Hzverified

Where these values come from

  • LVRTCodigo de Red, CRE Resolucion RES/550/2021, DOF 31 December 2021, pp.1068-1069; 'Manual Regulatorio de Requerimientos Tecnicos para la Interconexion de Centrales Electricas al Sistema Electrico Nacional', Capitulo 4, seccion 4.2.1, Tabla 4.2.1.B / Figura 4.2.1.B. Verified from the official DOF PDF (dof.gob.mx/2021/CRE/CRE_311221.pdf), text extracted directly.
  • HVRTCodigo de Red, CRE Resolucion RES/550/2021, DOF 31 December 2021, p.1069; 'Manual Regulatorio de Requerimientos Tecnicos para la Interconexion de Centrales Electricas al Sistema Electrico Nacional', Capitulo 4, seccion 4.2.1, Tabla 4.2.1.B points PA1/PA2/PA3, and Figura 4.2.1.B. Verified from the official DOF PDF, text extracted directly.
  • FRTCodigo de Red, CRE Resolucion RES/550/2021, DOF 31 December 2021, pp.1053-1054; 'Manual Regulatorio de Requerimientos Tecnicos para la Interconexion de Centrales Electricas al Sistema Electrico Nacional', Capitulo 2, seccion 2.1, Tabla 2.1. Verified from the official DOF PDF, text extracted directly.

Last checked against the source document on .

How Mexico compares

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

Other grid codes in North America