7. Normal operation
7. Normal operation
.43.
.42.
Canadian Solar US version inverters have Seven working modes:
1. NULL
2. Volt-watt
3. Volt-Var
4. Fixed-PF
5. Reac-power
6. Power-PF
7. VgWatt-UL
Based on UL1741SA, working mode 1,3,4,7 can be used by grid operator.
7.5.8.1 Working Mode Set
7.5.8.1.1 With UL Standard selected
There are TWO situations with different grid standards selected.
This function is for maintenance personnel only, wrong operation
will prevent the inverter from reaching maximum power.
2. Volt-Watt (Not Required)
Description: Inverter will change the active output power based on voltage change.
Note: This Setting is NOT required by UL1741SA Standards.
1.NULL
Description: Inverter is not under any working mode.
3. Volt-Var (Default)
Description: Inverter will change the reactive output power based on voltage change.
Q1
,
cap
Q2
=
Q3
=
0
Q4
,
ind
V1
V2
Vnom
V3
V4
Figure 7.22
Volt
-
VAR curve for Q
(
V
)
Default Settings for UL1741SA:
Q1: (0-60%) D30% Q4: (-60%-0%) Default -30%
Rated 600V Grid
V1:(478-599V) Default 525V V2: (478-599V) Default 589V
V3:(599-719V) Default 605V V4: (599-719V) Default 660V
Rated 800V Grid
V1:(640-800V) Default 736V V2: (640-880V) Default 774V
V3:(800-960V) Default 826V V4: (800-960V) Default 856V
Figure 7.23 Volt-VAR (600V for 185K)
Voltage1
:
0525V
Voltage2
:
0589V
Figure 7.24 Volt-VAR (800V for 255K)
Voltage1
:
0736V
Voltage2
:
0774V
