Energy Storage System Ring Network Solution¶

1. Solution Overview¶

1.1 Project Background¶

The photovoltaic (PV) industry, also known as the solar industry, uses solar-grade semiconductor electronic devices to absorb solar radiation energy and convert it into electrical energy. As the renewable energy source with the greatest potential, solar energy is increasingly favored for its inexhaustible reserves, universal availability, clean utilization, and practical economics. Vigorously developing the PV industry and actively harnessing solar energy have received unprecedented attention worldwide and have become an important part of the sustainable development strategies of many countries. Energy storage plays a particularly critical role throughout the photovoltaic power generation process.

1.2 Construction Objectives¶

Provide a stable and reliable data transmission channel for the energy storage system
Support ring network redundancy to ensure network reliability

1.3 Applicable Scenarios¶

Photovoltaic power generation energy storage systems
Energy storage power station monitoring
New energy power generation sites
Network communication in harsh industrial environments

2. Requirements Analysis¶

2.1 Current Equipment Status¶

Equipment types: energy storage systems, monitoring systems, industrial switches
Communication interfaces: gigabit RJ45 network interfaces, single-mode single-fiber gigabit SC optical ports
Communication protocols: 802.1Q VLAN, STP/RSTP/MSTP ring network redundancy protocols, ITU-T G.8032
Deployment environment: harsh industrial environments such as power, transportation, and industrial applications
Quantity and scale: multiple sub-station rooms serving as sub-units of the monitoring system

2.2 Core Requirements¶

Temperature adaptability: support normal operation under harsh temperatures of at least -40 to +50°C
Optical port requirements: support 2 or more single-mode single-fiber gigabit SC optical ports, accessible via optical modules, with a transmission distance of 20 km or more
Optical module requirements: the optical modules must be wide-temperature optical modules, supporting a temperature range of at least -40 to +50°C
Network port requirements: support 4 or more gigabit RJ45 network interfaces
Network management requirements: support Web-based management
Protocol requirements: support Layer 2 switching protocols such as 802.1Q VLAN and ring network redundancy protocols

3. Overall Architecture Design¶

Each sub-station room serves as a sub-unit of the monitoring system and is connected in a ring topology, ultimately enabling the monitoring system in the main control room to remotely monitor, control, and manage all points. In the system, the InHand Networks ISM5010D-S industrial-grade managed switch—designed to meet the demands of harsh industrial environments such as power, transportation, and industrial applications—is deployed. The switches are redundantly interconnected in a ring topology using existing spare optical fibers plus optical modules. Meanwhile, the Spanning Tree Protocol (STP) is enabled on the switches to ensure network reliability, and VLAN partitioning is used to logically isolate different applications to safeguard application data security.

3.1 Four-Layer Architecture¶

Topology

Perception layer: energy storage system equipment, on-site monitoring equipment
Network layer: ISM5010D-S industrial-grade managed switches, supporting ring network redundancy and optical fiber interconnection
Platform layer: main control room monitoring system
Application layer: remote monitoring, control and management, data analysis

3.2 Data Flow¶

Energy storage equipment → ISM5010D-S switches (ring network interconnection) → main control room → remote monitoring/control and management

4. Network and Access Solution¶

4.1 Networking Method Selection¶

An industrial Ethernet ring network topology is adopted. The switches are redundantly interconnected in a ring topology via optical fiber plus optical modules, and the STP/RSTP/MSTP spanning tree protocols are enabled to ensure network reliability.

4.2 Edge Device Selection Highlights¶

ISM5010D-S industrial-grade managed switch features:

Supports normal operation under harsh temperatures of at least -40 to +50°C, with actual wide-temperature operation from -40 to +85°C
Supports 2 or more single-mode single-fiber gigabit SC optical ports, accessible via optical modules, with a transmission distance of 20 km or more
The optical modules are wide-temperature optical modules, supporting a temperature range of at least -40 to +50°C
Supports 8 RJ45 gigabit Ethernet interfaces and 2 gigabit optical ports, offering high network scalability
Supports Web-based management and multiple management methods such as console
Supports Layer 2 switching protocols such as 802.1Q VLAN and ring network redundancy protocols
Supports the open international standard protocol ITU-T G.8032, with a ring network self-healing time of <5 ms
Supports STP/RSTP/MSTP ring network redundancy protocols for high network reliability
The product complies with FCC, CE, and ROHS standards
Features a rugged metal enclosure and protective coating that resists pressure and corrosion, with IP40 protection against dust and contamination
EMC rating reaches industrial level 4, providing the high stability required in industrial sites
Operates normally under harsh conditions of 5–95% humidity (non-condensing)

5. Protocol and Data Acquisition Solution¶

5.1 Supported Protocols¶

Layer 2 switching protocols: 802.1Q VLAN, STP/RSTP/MSTP
Ring network protocol: ITU-T G.8032 (ring network self-healing time <5 ms)
Management protocols: Web-based management, console management

5.2 Northbound Protocol Support¶

Supports Web-based management protocols
Supports enhanced network management protocols
Supports VLAN partitioning for logical isolation of applications

6. Solution Highlights Summary¶

Wide-temperature adaptability: supports wide-temperature operation from -40 to +85°C and normal operation under harsh conditions of 5–95% humidity (non-condensing), meeting the requirements of harsh industrial environments such as power, transportation, and industrial applications
High ring network reliability: supports the open international standard protocol ITU-T G.8032, with a ring network self-healing time of <5 ms. Supports STP/RSTP/MSTP ring network redundancy protocols for high network reliability
Rich interfaces: supports 8 RJ45 gigabit Ethernet interfaces and 2 gigabit optical ports, offering high network scalability
Network security: supports the 802.1Q VLAN protocol and can logically isolate different applications through VLAN partitioning to safeguard application data security
Industrial-grade quality:
The product complies with FCC, CE, and ROHS standards
Features a rugged metal enclosure and protective coating that resists pressure and corrosion, with IP40 protection against dust and contamination
EMC rating reaches industrial level 4, providing the high stability required in industrial sites
Convenient management: supports enhanced network management protocols and multiple management methods such as Web and console
Long-distance transmission: supports single-mode single-fiber optical module access, with a transmission distance of up to 20 km or more