Taiwan (TPC) — ride-through requirements

The LVRT, HVRT, FRT envelopes a grid-scale battery must meet under Taiwan (TPC), 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 — ESS paralleled to Taipower LV, HV or EHV systems.

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; 0.15s → 0 pu; ↗ 3s → 0.9 pu; 4s → 0.9 puverified
high-voltage ride-through (HVRT)ride-through0.001s → 1.2 pu; 0.25s → 1.2 pu; 0.251s → 1.15 pu; 1s → 1.15 pu; 1.001s → 1.1 puverified
frequency ride-through (FRT)ride-throughHigh: 0.1s → 62 Hz; 300s → 62 Hz; 300.001s → 61.5 Hz | Low: 0.1s → 57 Hz; 20s → 57 Hz; 20.001s → 57.5 Hz; 300s → 57.5 Hz; 300.001s → 58.5 Hzverified

Where these values come from

  • LVRT台灣電力公司 儲能系統併聯技術要點 (issued 2020-03-06, amended 2025-09-05), clause (二)1: '電壓降低至 0 p.u. 時，持續運轉時間應至少 0.15 秒', figure 附圖二 低電壓持續運轉能力示意圖 (0 pu to 0.15 s, ramp to 0.9 pu at 3.0 s, flat thereafter). Same curve = 再生能源發電系統併聯技術要點 附圖三. The code defines a linear recovery ramp; the vertices are read from the clause and the chart draws the segment between them.
  • HVRT台灣電力公司 儲能系統併聯技術要點 (amended 2025-09-05), clause (二)2: '電壓驟升至 1.2 p.u. 時，持續運轉時間應至少 0.25 秒；電壓驟升至 1.15 p.u. 時，持續運轉時間應至少 0.75 秒' + 附圖三 高電壓持續運轉能力示意圖. Identical to 再生能源發電系統併聯技術要點 附圖四.
  • FRT台灣電力股份有限公司 儲能系統併聯技術要點 (中華民國114年9月5日修正), clause (十) 故障持續運轉能力(頻率): 責任分界點頻率之正負百分之二點五範圍內 (58.5–61.5 Hz) 應能持續運轉; (十)1 低頻率持續運轉能力(LFRT) 附圖五 — '頻率介於 57.5 至 58.5Hz 時，持續運轉時間應至少 5 分鐘；頻率介於 57.0 至 57.5Hz 時，持續運轉時間應至少 20 秒'; (十)2 高頻率持續運轉能力(HFRT) 附圖六 — '頻率介於 61.5 至 62.0 Hz 時，持續運轉時間應至少 5 分鐘'.

Read it yourself: Taipower storage interconnection requirements (PDF) ↗

Last checked against the source document on .

How Taiwan compares

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

Other grid codes in Asia-Pacific