Internal power limitation
Parameters for external power limita-
tion
Parameters for power limitation
Maximum apparent power S
lim
=
100000 VA
“WMaxLimPct” = 50% P
lim
(approx. 40000 W)
“WMaxLimPct_RvrtTms” = 60 s
“WMacLimPct_RmpTms” = 2 s
“WMaxLim_Ena” = 1
Maximum active power P
lim
= 80%
(approx. 80000 W)
AC fallback active power Pfb = 75% P
lim
(approx. 60000 W)
PT1 settling time = 1 s
Tab. 7:
Sample parameters for power limitation
If the ramp time
“WMaxLimPct_RvrtTms”
in the SunSpec model is specified as 0 s, then the internal output gradient
is used. Otherwise, the set value will be used.
Irrespective of the communication protocol used, the settling time
“WMaxLim_Ena”
is used in order to transfer the new
power value. Otherwise, the internally configured value will be used.
The additional ramp time “
WMaxLimPct_RmpTms”
specifies the jump time from a power value to the new power
value.
The following formulae are used to calculate the gradient S
lim/min
:
Power / kVA resp. kW
Time / s
S
lim
=100
P
lim
=80
P
fb
=60
WMaxLimPct =40
10
20
30
40
50
60
70
Gradient = -600 % S
lim
/min
Fig. 60:
Power gradient according to sample parameters and calculation
The following formulae are used to calculate the Q filter parameter and cos ϕ gradient:
Fig. 61:
Formula for calculating the Q filter parameter
Fig. 62:
Formula for calculating the cos ϕ gradient (internal power gradient)
10.4.1.1 Parameters for permanent power limitation
Country-
spec. Set-
tings
Men
u
level
Display/
Setting
Action in this menu/meaning
Power limitation
Check activation
Activate or disable the power limitation.
Powador 30.0-72.0 TL3
Page 68
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