Energy Metering For PV Systerm
1. Distributed Photovoltaic Solutions
1.1 Application
Nowadays, grid companies usually require photovoltaic grid-connected systems to be irreversible , that is the electricity generated by photovoltaic grid-connected systems is consumed by local loads and excess electricity is not allowed to supply to the grid.
The system can regulate power generation in order to prevent the photovoltaic grid-connected system from generating reverse power.
1.2 Structure
1.2.1. Solution for PV anti-backflow
1.2.2. Solution for PV DC coupled energy storage
1.2.3. Solution for photovoltaic AC coupled energy storage
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● Rated voltage: AC 100V or 400V ● Rated Current: AC 80A ● RS485(MODBUS-RTU) ● Certificate: CE |
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● Rated voltage: 3X220/380V ● Rated Current: 60A ● Communication:RS 485 Modbus RTU ● Certificate: CE |
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● AC 3×220/380V，3×380V，3×57.7/100V，3×100V ● 3×1（6）A，3×10（80）A ● RS485(MODBUS-RTU) ● LCD display ● Frozen data ● 2-31st Harmonics ● kWh Class 0.5S, kVarh Class 2 |
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● AC 400V, 100V ● 5A 1A ● RS485(MODBUS-RTU) ● LCD display ● Cut Size:88*88mm |
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● Single phase three wire ● Rated voltage: AC 120V/208V，240V(88%~110%) ● Application: inverters in Australia, Europe, North America and other areas ● DIN 35 mm |
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● DC0-1000V ● Current support 75mV Output of shunt, 0-5V, 0-20mA output of hall ● Certificate: CE UL ● DIN 35 mm |
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● Measurement Input 0~(50-500)A ● AC, DC, pulse and other complex current |
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● Measurement ● Common Specification: 300A/75mV |
2.Centralized PV Solutions
2.1 Application
In the solar PV power generation system, the smart PV combiner box reduces the connection between the solar PV cell array and the inverter. The box can monitor the operating status of the solar panels, lightning protector and DC circuit breaker. With RS485 interface, the device can upload the measured and collected data and equipment status.
2.2 Structure
AGF Series Confluence Acquisition Device
Functions
Current specification: 20A, perforation connection 3 DI
Temperature measurement
Busbar voltage measurement: DC 1500V
LCD display
APQM Power Quality Monitoring Device
Functions
Measurement of electrical parameters, harmonics, inter-harmonics, voltage fluctuation, flicker
Monitoring of voltage swell, voltage sag, voltage interruption
Statistics of power quality limit times, voltage qualification rate, and form the report
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