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Wintop’s industrial switches and optical transceiver product lines cover every stage from substations to distribution networks. Designed for wide-temperature operation, they deliver high reliability and stable performance. We tailor solutions to your needs to help you meet the toughest environmental challenges.

Digital Substation Communication Network Solution

Time：2025-06-19 Views：745

1. Overview:

The digital substation consists of primary equipment, secondary equipment, and communication monitoring equipment. The entire system forms a three-layer device and two-layer network structure. The primary equipment is intelligent, adopting digital output electronic transformers, intelligent switches (or traditional switches with intelligent terminals), and other intelligent primary devices. These use standard information interfaces to integrate intelligent primary equipment technologies such as condition monitoring, measurement and control protection, and information communication. Secondary equipment is networked: communication networks are used between secondary devices to exchange analog quantities, switch quantities, and control commands, eliminating control cables.

2. Solution Topology:

Ø Solution features: This solution complies with the IEC61850 protocol and adopts dual-network communication with a star network redundancy, greatly improving communication network reliability and achieving real-time high-efficiency communication. Optical fiber is used as the communication medium, ensuring communication security, stability, and anti-interference capability. Meanwhile, the bandwidth of optical fiber is far greater than ordinary cables, capable of handling high-volume data communication in substations.

Ø Networking methods: SV networking and GOOSE networking, both transmitted through switches (GOOSE data volume is small, SV data is shared across the entire network).

Ø Network structure: Dual-star redundant network, with independent A and B networks to enhance network reliability and security.

Ø Different ports are used for SV and GOOSE between switches, and data transmission through three or more switches is not allowed (not recommended).

Ø Time synchronization method: SNTP (Simple Network Time Protocol).

Ø Recommended wintop optical products: For the process layer: YT-CM6020-G-F16G4 (provides 4 Gigabit optical ports and 16 Fast Ethernet optical ports). For process layer aggregation: YT-CM6016-G-G16 (provides 16 Gigabit SFP optical ports). For the station control layer: YT-CM6028-Z-E24G4 (provides 4 Gigabit optical ports and 24 Fast Ethernet electrical ports).

3. Digital Substation Network Switch Requirements:

1. Zero packet loss design
2. QoS priority guarantee
3. Fast redundancy technology and RSTP function
4. Broadcast storm suppression function
5. VLAN and port mirroring support requirements for digital substations
6. Industrial Ethernet delay < 10 µs
7. Powerful multicast processing IGMP Snooping (Multicast Filtering)
8. Industrial grade 4 design, certified by State Grid Class A
9. Support for GOOSE and SV port rate limiting, priority delivery of power messages

10. Electromagnetic environment requirements according to IEC61850-3 standard

4. wintop Product Advantages

• Supports cumulative delay function of SV sampled data frame switching in substations;

• Supports GOOSE and SV port rate limiting, priority delivery of power messages;

• Supports IGMP Snooping and GMRP to filter multicast traffic;

• Supports 2 relay alarm outputs, as well as power, port, and temperature alarms;

• Supports independent dual power redundancy, safe and reliable.

• Supports bandwidth management to ensure network stability;

• Supports substation SNTP clock synchronization protocol;

• QoS (IEEE 802.1p and DSCP) improves data transmission determinacy and increases network stability;

• Supports static link aggregation to maximize bandwidth utilization;

• Supports port mirroring for convenient online debugging;

• Supports two independent MMS communication ports for convenient debugging, configuration, and monitoring;

• Monitoring and statistics of optical port temperature, voltage, and power consumption.

• Industrial level 4 EMC standard, wide temperature operating range of -40 ~ 70℃

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Solutions

Advanced R&D Capabilities

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a global leader in industrial connectivity

Digital Substation Communication Network Solution

Solutions

Advanced R&D Capabilities

Committed to becominga global leader in industrial connectivity

Digital Substation Communication Network Solution

Committed to becoming
a global leader in industrial connectivity