. . . It must be possible to design a battery inverter system that mimics the response of a rotating plant in terms of output vs frequency and, given that most conventional plant can run at 110% of rated output for an hour or so, the battery capacity could be designed on the same basis, I.e. 10% of the local wind or solar generator.
The trouble is they are still worlds apart. If you severely overload an inverter it switches off immediately. If you severely overload a conventional 500MW or 660MW generator, it gradually slows down until it trips off the grid on underspeed. Until this difference is resolved, automatic demand reduction schemes have their place in saving the grid from a total collapse.
. . . It must be possible to design a battery inverter system that mimics the response of a rotating plant in terms of output vs frequency and, given that most conventional plant can run at 110% of rated output for an hour or so, the battery capacity could be designed on the same basis, I.e. 10% of the local wind or solar generator.
The trouble is they are still worlds apart. If you severely overload an inverter it switches off immediately. If you severely overload a conventional 500MW or 660MW generator, it gradually slows down until it trips off the grid on underspeed. Until this difference is resolved, automatic demand reduction schemes have their place in saving the grid from a total collapse.
