Frequency regulation

Example

Use in Lemonergy

Start with mission energy, peak power and operating conditions.

This is a reference concept. No executable Lemonergy block has been verified for this term.

Connected concepts

Related concepts from the knowledge graph. Connections show context, not cause and effect. Hover or focus a linked term for its definition.

Energy arbitrage

Charging a battery when electricity is cheap and discharging when it is expensive, the simplest revenue of grid storage. Peak shaving is the same idea applied to a site’s demand charges.

Equivalent full cycle

Total charge throughput divided by nominal capacity, so that many shallow cycles count as the equivalent number of full ones. It lets cycle life be compared across different duty cycles.

Rate of change of frequency

How fast grid frequency moves after a sudden imbalance such as a large generator tripping. Grids with less rotating inertia see steeper slopes; Great Britain has relaxed its loss-of-mains protection settings from 0.125 Hz/s to 0.5–1 Hz/s. Fast battery response and grid-forming inverters that emulate inertia help keep it within limits.

Specific power

Deliverable power per unit mass, in watts per kilogram; power density is the same per litre. A cell is designed for energy or for power, rarely both: thin electrodes give power, thick ones give energy.

Stationary storage

Batteries installed in a fixed place — a container at a solar farm, a cabinet in a home — to shift energy in time or support the grid. LFP cells dominate because cost per cycle and safety matter more than mass.

References & further reading

Technical references

1. DOE/EPRI 2013 Electricity Storage Handbook in Collaboration with NRECA

   Sandia National Laboratories · 2013

   Technical reference · Storage technologies and grid services. The publisher notes that its historical cost and deployment figures are outdated.