ARMxy + IEC 61850: Grid Four Capabilities for Distributed PV

Grid “Four Capabilities” Exam: ARMxy Edge Gateway + Boyang Xunlian IEC 61850 Software

New Infrastructure Edge Computing Case Series · Special Edition

The Challenge: More PV, Less Certainty

Distributed PV is surging. In the first half of 2026, China added 42.22 GW of distributed PV, 59% of all new PV. Cumulative capacity reached 576 GW—45% of total PV. But dispatchers face a familiar problem: PV “depends on the weather,” and scattered rooftop installations are hard to see and control.

China’s 2025 regulation requires distributed PV to be “observable, measurable, adjustable, and controllable”—the “Four Capabilities.” The new GB/T 34932-2025 standard (effective April 2026) mandates DL/T 698.45 and GB/T 19582 protocols, prohibiting proprietary ones. Without compliance, new projects may fail grid acceptance; existing ones risk curtailment and fines.

Why It’s Hard

• Observable: Scattered sites need real-time visibility.
• Measurable: Older inverters use inconsistent protocols and data formats.
• Adjustable: Many inverters lack remote regulation support.
• Controllable: End-to-end control from dispatch master to inverter requires protocol conversion, links, and encryption.

The key is not just seeing data—it’s being able to control.

Hardware + Software: A Joint Answer

Hardware alone is insufficient; software alone is insufficient. The ARMxy edge gateway plus Boyang Xunlian’s IEC 61850 software provides a ready-made combination.

Hardware: ARMxy BL440

• Rockchip RK3576: quad-core Cortex-A72 + quad-core Cortex-A53 + Cortex-M0
• 6 TOPS NPU
• Configuration: BL440 + X20 + 2× Y63 = 12× RS485
• Allocation: 4 inverters, 2 combiner boxes, 2 smart meters, 2 environmental monitors, 2 spare for storage PCS
• -40°C to 85°C, EMC Level III, fanless all-metal enclosure

Software: Boyang Xunlian IEC 61850

Shenzhen Boyang Xunlian provides protocol stacks, configuration tools, and a complete runtime for IEC 61850. It helps integrators achieve compliant access without writing protocol stacks from scratch.

It addresses the Four Capabilities:

• Observable:Modbus RTU data mapped to IEC 61850 information models—dispatch sees “inverter No. 1 active power,” not raw register values.
• Measurable:Full collection of voltage, current, power, generation, irradiance, and module temperature.
• Adjustable:Dispatch commands parsed and converted to Modbus register writes for inverters.
• Controllable: Remote start/stop with “flexible regulation + rigid control” modes.

The software runs on ARMxy’s Linux system. ARMxy provides hardware and interfaces; Boyang Xunlian provides protocol stacks and tools. Together they form an edge gateway that can translate, compute, and be remotely maintained.

What It Solves

It turns PV plants from “blind dispatch” to “controllable,” and from “passive grid connection” to “active response.”

A “Virtual Power Plant Town” project completed full Four Capabilities joint debugging by reusing existing PV monitoring equipment—no large-scale new hardware. A Shenzhen Power Supply Bureau representative noted customers can achieve low-cost grid connection without significantly increasing debugging budgets. The ARMxy + Boyang Xunlian approach follows the same path: integrators handle data mapping and business logic; the underlying work is done.

Open Platform for Industrial Software

Beilai Technology welcomes industrial software partners. ARMxy is an open Linux hardware platform—any Linux-compatible industrial software (IEC 61850 stacks, AGC/AVC, SCADA, databases, AI frameworks) can run on it. Cooperation models include joint validation, joint branding, and joint delivery. “You do software, we do hardware.”

Summary

The Four Capabilities exam demands many serial ports, full protocol support, local decision-making, wide-temperature operation, EMC ruggedness, and remote manageability. ARMxy BL440 + X20 + 2×Y63 delivers 12× RS485 + 6 TOPS NPU + EMC Level III. Boyang Xunlian provides the IEC 61850 stack and tools. Hardware + software—a complete answer.

With so much PV and such an urgent grid, let ARMxy and Boyang Xunlian handle the underlying work—you focus on serving customers.