Revenue Stacking for BESS: Fast Frequency Regulation and Balancing Market Participation in Italy

Algorithm 1

BESS FR set-point management.

	Input: Frequency deviation Δft with respect to 50 Hz, measured each second
	Output: Power set-point of the BESS for each second within the simulated period TimePeriod
	counter = 0, j for underfrequency levels, i for over-frequency levels
	for t in TimePeriod do
	← Apply droop curve
	if counter = = 30 do
	Start BESS fade-out from current power set-point PFRU to 0 in 300 seconds
	else if Δftis indo
	Increment the counter
	counter ← counter + 1
	else counter = 0
	if Δf > level #2i (level #1j) or Δf > level #2j (level #1i) do
	← Apply droop curve
	counter = 0
	return BESS power set-point PFRU