Visit for the latest on our upcoming conferences and webcasts

Three types of reserves

"Regulating reserve" actually comprises several types of generation plant. "Frequency response" plant act automatically, increasing or decreasing output in response to changes in system frequency. A fall in frequency means demand exceeds supply, so more power is needed. A rise in frequency indicates supply is exceeding demand. "Spinning reserve," as the name implies, is operational, but at less than full output. "Standing reserve" is not generating, but ready to do so.

The requirements for each type of reserve depend on the uncertainty margins in scheduled production and estimated demand at various timescales. The way the requirements for reserves are calculated is based on statistical principles (see box page 36: Strains on the System).

Have you registered with us yet?

Register now to enjoy more articles
and free email bulletins.

Sign up now
Already registered?
Sign in

Before commenting please read our rules for commenting on articles.

If you see a comment you find offensive, you can flag it as inappropriate. In the top right-hand corner of an individual comment, you will see 'flag as inappropriate'. Clicking this prompts us to review the comment. For further information see our rules for commenting on articles.

comments powered by Disqus

Windpower Monthly Events

Latest Jobs