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Section 10: Appendix A
Grid Support Functions: Parameter Values and Range of Adjustability
The table below contains information about the default values and range of adjustment for the parameters of UL 1741
Supplement B Functions evaluated on the PWRcell Inverter. Advanced Grid Support Functions are listed with
Parameter Labels in the order specified in IEEE 1547.1-2020 Annex B per IEEE 1547-2018. The default values below
are implemented in the 'IEEE 1547-2018' PWRcell Grid Profile. Grid Support Function default activation states are per
IEEE 1547-2018 and not specified.
Table 10-1 Advanced Grid Support Functions: Parameter Values and Range of Adjustability.
Grid Support
Function /
Parameter Label
Funct. Abbr.
Volt-VAr / Q(V)
QV_REF
QV_VREF_OLRT
QV_CURVE_V2
QV_CURVE_Q2
QV_CURVE_V3
QV_CURVE_Q3
QV_CURVE_V1
QV_CURVE_Q1
QV_CURVE_V4
QV_CURVE_Q4
QV_OLRT
Watt-VAr / Q(P)
QP_CURVE_P3_GEN
QP_CURVE_P2_GEN
QP_CURVE_P1_GEN
QP_CURVE_P1_LOAD
QP_CURVE_P2_LOAD
QP_CURVE_P3_LOAD
QP_CURVE_Q3_GEN
QP_CURVE_Q2_GEN
QP_CURVE_Q1_GEN
QP_CURVE_Q1_LOAD
QP_CURVE_Q2_LOAD
QP_CURVE_Q3_LOAD
QP_OLRT
Volt-Watt / P(V)
Installation and Owner's Manual for Generac PWRCell Inverter
Parameter
Default /
Parameter
Inverter
Range
Setting
1.00
0.95 – 1.05
300
300.0 – 5000.0
0.98
0.97 – 1.00
0*
-1.00 – 1.00**
1.02
1.00 – 1.03
0*
-1.00 – 1.00**
0.92
0.82 – 0.98
0.44*
0 – 1.00**
1.08
1.02 – 1.18
-0.44*
-1.00 – 0**
5.0
1.0 – 90.0
1.0
0.6 – 1.0
0.5
0.4 – 0.8
0.2
0 – 0.4
-0.2
-0.4 – 0
-0.5
-0.8 – -0.4
-1.0
-1.0 – -0.4
0.44*
-1.00 – 1.00**
0*
-1.00 – 1.00**
0*
-1.00 – 1.00**
0*
-1.00 – 1.00**
0*
-1.00 – 1.00**
0.44*
-1.00 – 1.00**
N/A
max 10
Units
Comments
Per Unit voltage based on Nameplate Nominal
V p.u.
Voltage.
Use of the Vref Adjustment time constant parameter
s
to be specified by Local Area EPS Operator.
V p.u.
Per Unit voltage based on Reference Voltage (Vref).
Per-unit reactive power. Negative value indicates
VAr p.u.
absorption.
V p.u.
Per Unit voltage based on Reference Voltage (Vref).
Per-unit reactive power. Negative value indicates
VAr p.u.
absorption.
V p.u.
Per Unit voltage based on Reference Voltage (Vref).
Per-unit reactive power. Negative value indicates
VAr p.u.
absorption.
V p.u.
Per Unit voltage based on Reference Voltage (Vref).
Per-unit reactive power. Negative value indicates
VAr p.u.
absorption.
s
Open Loop Response Time; Time in seconds.
W p.u.
Per-unit rated active power output.
W p.u.
Per-unit rated active power output.
W p.u.
Per-unit rated active power output.
W p.u.
Per-unit rated active power absorption.
W p.u.
Per-unit rated active power absorption.
W p.u.
Per-unit rated active power absorption.
Per-unit reactive power. Negative value indicates
VAr p.u.
absorption.
Per-unit reactive power. Negative value indicates
VAr p.u.
absorption.
Per-unit reactive power. Negative value indicates
VAr p.u.
absorption.
Per-unit reactive power. Negative value indicates
VAr p.u.
absorption.
Per-unit reactive power. Negative value indicates
VAr p.u.
absorption.
Per-unit reactive power. Negative value indicates
VAr p.u.
absorption
s
Open Loop Response Time in seconds.
Appendix A
67
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