allowances analysis applications auctions bifurcation bifurcations chilean competitive consequences considering control damping definition digsilent distribution doubly dynamic electricity electronically emerging emissions energy example farms flywheel frequency generation generators impact improving induced induction inertia integration inter interfaced issues language limit loadability location machine market markets modal model modeling operation order oscillations parameterized participation photovoltaic power powerfactory product programming reduced regulation residential resources scheduling short smart stability storage supervisory supply system systems towards turbine under understanding using voltage