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Frequency Stability

The ability of a power system to maintain steady frequency following a severe system upset.

Definition in an Article by a Task Force

Source: 1

Frequency Stability refers to the ability of a power system to maintain steady frequency following a severe system upset resulting in a significant imbalance between generation and load.

Definition in a European Union Regulation

Source: 2 (p6)

'frequency stability' means the ability of the transmission system to maintain frequency stable in the N-situation and after being subjected to a disturbance;

Definition in China grid operation code

Source: 3 (p8)

频率稳定：电力系统受到扰动后，系统频率能够保持或恢复到允许的范围内，不发生频率振荡或崩溃的能力。

Translation:

Frequency Stability: The ability of a power system to maintain or restore system frequency within an allowable range after being subjected to a disturbance, without the occurrence of frequency oscillation or collapse.

Last modified: 2026-01-18

Related: stability · fast-frequency-response · primary-control · secondary-control · tertiary-control · frequency-regulation · automatic-generation-control · n-situation

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  1. P. Kundur and others (2004). Definition and classification of power system stability IEEE/CIGRE joint task force on stability terms and definitions. https://doi.org/10.1109/TPWRS.2004.825981 ↩

  2. (2017). Commission Regulation (EU) 2017/1485 of 2 August 2017 establishing a guideline on electricity transmission system operation. http://data.europa.eu/eli/reg/2017/1485/oj ↩

  3. SAMR and SAC (2022). GB/T 31464-2022: The Grid Operation Code. https://openstd.samr.gov.cn/bzgk/std/newGbInfo?hcno=2E138E6A6D540124290DBBA47FFA1E14 ↩