Anti-backflow, dual-circuit, and wireless communication – Accreto ADL200W/ADL400W's precise metering practice in new energy power generation systems

With the transformation of the global energy structure and the rapid development of new energy technologies, distributed photovoltaic, energy storage systems, micro-inverter systems, and AC-coupled systems are gradually becoming important components of household and industrial energy consumption. Against this backdrop, how to achieve efficient monitoring, accurate metering, and intelligent management of electricity has become a focus of industry attention.

Acrel's ADL200W and ADL400W series external current transformer dual-loop wireless power meters are high-precision intelligent instruments tailored for these new energy scenarios. The products not only feature small size, fast response speed, and convenient installation, but also fully consider the complexity and diverse needs of current new energy systems in their functional design.

Current Situation Analysis: New Challenges to Electricity Metering from New Energy Systems

In grid-connected photovoltaic (PV) and energy storage systems, bidirectional flow of electricity has become the norm. Traditional unidirectional metering methods can no longer meet the requirements for accurate recording of both forward (electricity consumption) and reverse (surplus electricity fed into the grid) energy. Furthermore, with the widespread adoption of residential distributed PV, data interoperability and coordinated control between the system and inverters/energy management systems (EMS) have become particularly critical. Effectively preventing reverse flow, regulating power generation, and optimizing battery charging and discharging strategies have become core issues for improving energy efficiency.

Product Application Scenarios: The ADL200W (single-phase) and ADL400W (three-phase four-wire) series electricity meters comprehensively cover key aspects of new energy, specifically designed for the following scenarios:

Grid-connected Photovoltaic System: Real-time monitoring of photovoltaic power generation and grid-connected electricity, supporting bidirectional metering, accurately recording both forward power consumption and reverse power grid connection, facilitating reverse current control.

Energy Storage System: Monitoring electrical parameters during battery charging and discharging, optimizing charging and discharging strategies through linkage with EMS, improving the operating efficiency of the energy storage system.

Micro-inverter and AC Coupling System: Suitable for small-scale distributed generation scenarios, real-time acquisition of multi-dimensional data such as voltage, current, and power, providing data support for stable system operation.

Residential Distributed Energy Management: Data interaction with home energy management systems or inverters via Wi-Fi or LoRa wireless communication, supporting remote monitoring and adjustment, truly achieving smart electricity usage.

Core Product Features: Precise, Flexible, Intelligent

High-Precision Metering: Voltage and current measurement error ±0.5%, active energy accuracy up to Class B or 1, meeting stringent metering requirements.

Dual-Circuit Design: Supports two independent energy monitoring channels, suitable for multi-circuit or complex power distribution scenarios, improving system integration.

Multiple Communication Methods: Supports RS485 (Modbus-RTU), Wi-Fi (Modbus-TCP/Http), and LoRa communication, flexibly adapting to different network environments and facilitating access to various energy management platforms.

External Current Transformer: Simplifies installation process, improves safety, and adapts to more field wiring needs.

Bidirectional Metering Function: Completely records forward and reverse active/reactive energy, providing reliable data for distributed energy billing and energy efficiency analysis.

In conclusion

driven by both the energy internet and the goal of carbon neutrality, refined, intelligent, and networked electricity metering has become an inevitable trend in the industry. Acrel's ADL200W/ADL400W series electricity meters, with their powerful integrated functions, flexible communication methods, and high-precision measurement capabilities, provide a solid technical guarantee for the stable operation and efficient management of new energy systems.

Aaron Shi

Electrical Engineer Expert, Providing Service, consultant, product expert, professional manufacturer of energy efficiency management systemic solutions, and energy meters.