It is anticipated that in the coming years, the increase in energy produced from renewable sources may result in the electrical power generated in the grid being insufficient to meet demand.

One requirement that exists today and is not being changed is ‘low frequency demand disconnection’, which involves disconnecting loads to avoid blackouts when the grid frequency drops too low. To maximise service continuity, system providers aim to introduce a new operating mode, called ‘limited frequency sensitive mode - underfrequency consumption (LFSM-UC)’. This assumes that when the mains frequency changes within the specified limits and according to certain profiles, the connected devices, including residential heat pumps with power outputs greater than 800 W, m ...