16
Product Overview
2.7.4 Peak Shaving Mode
Peak shaving mode is set for leveling out peaks in electricity use. The system is intelligently
controlled to ensure charging takes place during off-peak hours and discharging occurs
during peak hours.
Chag rin g Stan db y
Disc harging
Pu rchase electricity
Peak Shaving Mode
(Assum in g p ea k po w er f rom 7 : 00 to 9: 00 and from 18:00 to 23:00)
Id ea : Leveling out peaks in electricity use
7:0 0
PV an d b attery pow er th e lo a d
18 :00 23: 00
Power
Time Line
Chargin g Stan db y Charging
Battery
status
Battery
SO C
Working
mode
A
B
C
A
ChargeFromGrid Period
Peakshaving
Period 1
PVCharge Period
Grid
consumption
curve
D
Peak Shaving Period 2
Th e g rid charges
the battery
Th e g rid
powers the load
PV p owers
th e lo ad
Charge th e b attery
until SOC reaches
Reserved SOC
Th e g rid
powers the load
Battery powers the load
9:00
Peak
Discha rg in g Stan db y
shaving 1
Load fluctuation
Store electricity
Purchase
ele c tric ity
Peak shaving 2
Self use
PV p owers th e lo ad
PV input power
Figure 2-13 Peakshaving mode
Table 2-7 Description of peakshaving mode
Time Period Inverter working status
Period A
• The grid can charge the battery to MaxSOC within the set
ChargePowerLimits. In this period, the battery will not discharge
power.
Period B & D
Grid consumption power < PeakLimits
(PV + grid
→
load)
• The PV and grid will power the load. The battery will not charge or
discharge power.
Grid consumption power
>
PeakLimits
(PV + battery + grid
→
load)
• The battery will discharge energy for loads and thus reduce the
amount of energy purchased from the grid.
Period C
(PV
→
battery
→
load
→
grid)
• The battery does not discharge power. The PV charges the battery up
to the Reserved SOC before supplying power to the loads. Any excess
power beyond the load requirements is first supplied to the loads, and
then fed into the grid.
Note:
MaxSOC: The energy taken from grid to charge the battery. 50% by default, the settable
range is 10%-100%.
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