Photovoltaic System Solutions

Photovoltaic System Solutions

Mar 28, 2022

1. Distributed Photovoltaic Solutions

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. Solution for PV anti-backflow

2. Solution for PV DC coupled energy storage

3. Solution for photovoltaic AC coupled energy storage

1. Anti-reflux





Single phase






Two phase



UL 1741

Three phase




• Measure power generation and the use of electricity,
• Data refresh rate: 250ms,

• Split core CT, 300A current,

• Communication: RS485 and grid-connected inverter or energy storage inverter
DJSF1352-RN DC Energy Meter

• Accuracy: 1, voltage output: ±12V

• Communication: infrared and RS485 communication, Modbus-RTU and 645 protocol

• DIN rail installation

• Support hall sensor or shunt input

2, Centralized PV Solutions

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.
AGF Series Confluence Acquisition Device
  • 1) Combiner box
    ● Accuracy:0.5
    ● DC ± 18A
    ● Communication:RS485 Modbus RTU
  • 2) PV Confluence Acquisition Device
    ● Accuracy:0.5
    ● Rated Current: DC 0-20A
    ● Voltage: DC1000V,DC1500V
    ● Communication:RS 485 Modbus RTU
• Current specification: 20A, perforation connection

• 3 DI

• Temperature measurement

• Busbar voltage measurement: DC 1500V

• LCD display
APQM Power Quality Monitoring Device
• 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.