1、 Background: The pain points of safety and efficiency in distributed power generation urgently need to be addressed

With the popularization of distributed power generation systems such as photovoltaics and energy storage, the coordinated operation of the power grid and distributed power sources faces two core challenges: on the one hand,Reverse power problemDirectly threatening the stability of the power grid. When the power generation of distributed power sources exceeds the load consumption, excess electricity flows back into the power grid, which may interfere with the frequency and voltage stability of the power grid, and even affect the safety of maintenance personnel; On the other hand,Energy waste during the low-power phaseIf the sudden drop in load leads to excess power generation, and some power generation components are not cut off in a timely manner, it is not only easy to cause reverse power, but also result in low energy utilization efficiency.

In this context, traditional protection devices can either only cope with reverse power alone or cannot accurately adapt to the complex requirements of distributed power generation scenarios. There is an urgent need for a dedicated device that combines "safety protection+lean measurement and control" capabilities to safeguard distributed power generation systems.

2、 Product Overview

Ankerui AM5SE-PV anti backflow protection measurement and control device is a specialized power equipment designed according to IEC international standards, with a core positioning ofThe "safety barrier+data center" of distributed power generation systems with voltage levels of 110kV and below.

The device not only has basic functions such as full power measurement (voltage, current, power, frequency, etc.), power statistics, power quality analysis (harmonics, voltage fluctuations, etc.), event recording, etc., but also can flexibly select DI/DO modules and AO modules to achieve electrical circuit switch status monitoring and analog output, providing full process data support and control capabilities for the "safe operation+efficient management" of distributed power generation systems.

3、 Product features and parameters: Safe, precise, and flexible technological advantages

（1） Core product features

1. Dual core protection: from "anti backflow" to "lean power control"Reverse power protection+recovery: Real time monitoring of power flow direction. When reverse power (negative power) is detected and exceeds the set value, the risk is quickly cut off through a set delay action; After troubleshooting, if the power returns to a positive value and meets the standard, the recovery mechanism will be automatically triggered to ensure the orderly grid connection of the power generation components. Eight stage low-power graded control: In response to load reduction scenarios, the power generation components are cut off through eight stage low-power protection grading to avoid excessive power; Simultaneously equipped with 8-stage low-power recovery function, the components are precisely deployed in the order of "from the back to the front", maximizing the utilization of generated electricity and reducing power consumption in the grid.

2. Flexible Communication: A "Long Distance+High Reliability" Solution Adapted to Distributed ScenariosFiber optic direct jump: supports multi-mode fiber optic (within 1.5 kilometers) and single-mode fiber optic (within 20 kilometers) transmission, solving the problem of long distance between distributed photovoltaic system switches and protection devices, and achieving remote tripping and closing control; GOOSE Communication: Equipped with a ring network switch to adapt to GOOSE fiber optic ring network, meeting the complex scene requirements of multiple incoming lines and multiple grid connection points, ensuring real-time and stable signal transmission.

3. High precision measurement+high safety complianceMeasurement accuracy: Voltage and current measurement errors are ≤± 0.2%, power errors are ≤± 0.5%, and electrical energy measurement meets the D-level (0.2S) standard, providing reliable data for energy assessment; Multiple certification support: Through UL and CE certification, it meets the market access requirements in North America and Europe, and has been tested in electrical insulation, flame retardant performance, anti-interference, and other aspects.

4. Modular design: on-demand customization, strong scalability

5. The standard configuration includes 24 input channels (supporting active/passive contact access), and G221 output board and G101/G125 communication board (supporting IEC61850 and optical Ethernet) can be added according to needs to flexibly adapt to the functional requirements of different distributed power generation scenarios and reduce the cost of later transformation.

（2） Key technical parameters

4、 Application scenario: Covering the full scenario requirements of distributed power generation

1. Distributed photovoltaic/energy storage systemAs the core protection and measurement unit, it realizes reverse power protection, power grading control, and metering coordination for power generation, consumption, and energy storage, ensuring the safe grid connection and efficient utilization of energy in the system.

2. Projects with voltage levels of 110kV and belowAdapt to industrial and commercial distributed power stations, infrastructure supporting power sources, and other projects to meet the protection and measurement needs of medium and low voltage power grids.

3. High standard data centerIn response to the high requirements for power continuity and power quality in data centers, we provide energy efficiency sub metering and grid health monitoring (harmonics, voltage fluctuations) to avoid power supply risks.

4. Intelligent Factory and Intelligent Manufacturing: As an industrial Internet perception layer device, it provides accurate data for factory energy monitoring, equipment energy consumption analysis, and cost sharing, and helps lean energy management.

5. Overseas Compliance ProjectsWith UL and CE certification, it can be directly applied to distributed power generation projects in North America, Europe and other regions without additional adaptation and modification.

5、 Summary: The 'weapon' for safe operation of distributed power generation

The Ankerui AM5SE-PV anti backflow protection measurement and control device solves the safety pain points of distributed power generation with a dual core protection of "reverse power+low power". It adapts to multi scenario requirements with high-precision measurement, flexible communication, and modular design, while ensuring compliance through UL/CE certification. Whether it is to ensure the stability of the power grid, improve energy utilization efficiency, or support the landing of overseas projects and assist in smart factory energy management, it can provide a "safe, reliable, accurate and efficient" solution, becoming the core supporting equipment for distributed generation systems from "grid connected operation" to "lean management".