6. Normal operation
6. Normal operation
.51.
.50.
Canadian Solar US version inverters have Ten working modes:
1. NULL
2. Volt-watt
3. Volt-Var
4. Fixed-PF
5. Reac-power
6. Power-PF
7. VgWatt-UL
6.7.8.1.2 With Rule21 Standard selected
NOTE
The other three working mode"P1-V-Watt","P1-V-Var" and
"P1-V-P&V-Q" are NOT applicable for settings.
Based on Rule21, working mode 1,2,3,4 can be used by grid operator.
1.NULL (Mode Reset)
Description: Inverter is not under any working mode.
2. Volt-Watt
Description: Inverter will change the active output power based on voltage change.
Note: This is the Volt-Watt Setting for Rule21 Standards.
Figure 6.27 Volt
-
Watt
characteristic
No Real Power
Production Zone
0%
106%
108%
110%
Real Power
Reduction Zone
Full Power Production
Capabilities Zone
50%
100%
Active Power
as % of
Nameplate
% Voltage
NOTE
The following modes are for "R21P3-480", "R21P3-48A".
Default Settings for Rule21 Standards:
Rated 480V Grid
V1:less than Vstart
V2 (Vstart): (221-304V) Default 293V
V3 (Vstop): (277-332V) Default 304V
V4: larger than Vstop
P1:100% P2:100% P3: 0% P4:0%
3. Volt-Var
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 6.28
Volt
-
VAR curve for Q
(
V
)
Default Settings for Rule21 Standard:
Q1: (0-60%) D30% Q4: (-60%-0%) Default -30%
Rated 480V Grid
V1:(221-277V) Default 254V V2: (221-304V) Default 268V
V3:(277-332V) Default 286V V4: (277-332V) Default 296V
Figure 6.29 Volt-VAR
Voltage1
:
254V
Voltage2
:
268V
4.Fixed-PF
Description: Inverter will output power with fixed power factor.
Setting Range: -0.8 to +0.8
Default value is PF = 1
