User Manual

43
03 OTHERS
User Manual V1.3
3.4.3 Grid Parameter Setting
For parameter, which used in grid support and protection function, adjustable requirement
of CA Rule 21, HECO 14H and IEEE1547, the relevant explanations and setting methods can
obtain by reading Parameter Adjustable Method Of Grid Support Utility Interactive Inverter, the
document can be obtained by contacting the after-sales.
Time frame Steady-state measurements Transient measurements
Parameter
Minimum
measurement
accuracy
Measurement
window
Range
Minimum
measurement
accuracy
Measurement
window
Range
Voltage, RMS (± 1% V
nom
) 10 cycles
0.5 p.u. to
1.2 p.u.
(± 2% V
nom
) 5 cycles
0.5 p.u. to 1.2
p.u.
Frequency
b
10 mHz 60 cycles
50 Hz to
66 Hz
100 mHz 5 cycles 50 Hz to 66 Hz
Active Power (± 5% S
rated
) 10 cycles
0.2 p.u. < P <
1.0 p.u.
Not required N/A N/A
Reactive
Power
(± 5% S
rated
) 10 cycles
0.2 p.u. < Q <
1.0 p.u.
Not required N/A N/A
Time
1% of
measured
duration
N/A 5s to 600s 2 cycles N/A 100 ms < 5 s
a Measurement accuracy requirements specied in this table are applicable for voltage THD <
2.5% and individual voltage harmonics < 1.5%.
b Accuracy requirements for frequency are applicable only when the fundamental voltage is
greater than 30% of the nominal voltage.