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Operating Test
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8.4.4 PV-Auto Mode
This mode is divided into three types depending on the state of the Battery power.
8.4.4.1 Weak
Solar energy generation and Battery discharging are available. The solar-generated power is supplied
to sub and load. In case of insufficient power, the battery is discharged on the EMS decision. When Load
Output Power (Sub) is higher than power generation of PV and Battery, Grid power is supplied to the Sub.
• Use smart meter. The energy supply priority is : load (sub+main) > grid
• Not use smart meter. The energy supply priority is : sub_load > grid
8.4.4.2 Strong
Solar energy generation and Battery charging are available. The solar-generated power is charged
to the Battery based on the EMS decision.
• Use smart meter. The energy supply priority is : load (sub+main) > battery > grid
• Not use smart meter. The energy supply priority is : sub_load > battery > grid
[ Figure 8-6 : Diagram of PV-Auto Weak Mode ]
[ Figure 8-7 : Diagram of PV-Auto Strong Mode ]
Grid Output
Power
Load Output
Power(Main)
Load Output
Power(Sub)
PV Input
Power
Energy
Meter for
Utility
Battery
Power
One Way
Bi-directional way
Inactive
Grid Output
Power
Load Output
Power(Main)
Load Output
Power(Sub)
PV Input
Power
Energy
Meter for
Utility
Battery
Power
One Way
Bi-directional way
Inactive