I. Solution Overview
This solution is designed for a 102MWh-level energy storage system, adopting a "communication topology" architecture, connecting to the 35kV side bus of a 220kV step-up station through two 35kV collector lines. The system is configured with 8×6.8MWh energy storage units (1 collector line) and 7×6.8MWh energy storage units (1 collector line), with a total capacity of 102MWh, suitable for large-scale industrial and commercial energy storage scenarios.
Overall network architecture concept: Each energy storage unit is equipped with one IES6520P-4GX16GT-4BT-D industrial-grade gigabit 4-fiber 16-electrical PoE++ access switch, every 3 units share one IES8528-4GX24GT-D-L2+ industrial-grade gigabit 4-fiber 24-electrical aggregation switch,forming a star uplink. The 15 energy storage units are divided into 3 small rings, and then centralized by one IES8728-4XS16GF8GC-D-L3+ industrial-grade three-layer core switch (4×10 G SFP+, 16×1 G SFP, 8×Combo 1 G) to carry the upstream traffic of 5 groups of aggregation switches, realizing a gigabit-to-unit, 10-gigabit-core layered architecture,support DI/DO/Rs485 connected.
II. System Architecture
1. Energy Storage Unit Configuration
Capacity Distribution: 8×6.8MWh + 7×6.8MWh = 102MWh
Collector Lines: Two 35kV lines, connecting two groups of energy storage unit clusters respectively
Access Method: 35kV side bus access to 220kV step-up station, compliant with grid interconnection standards
2. Network System
Monitoring Network: 4-core single-mode fiber + 2-core multi-mode jumper, enabling full system status monitoring
Control Network: 4-core single-mode fiber, supporting real-time control command transmission
Topology Features: Adopts distributed architecture, supports multi-machine parallel expansion, has off-grid operation capability
3.Industrial Communication Network
Related Product Introduction
IES8728-4XS16GF8GC-D-L3 is is an AI-era data-center core switch, delivering 40GE uplinks, intelligent traffic engineering and carrier-grade high availability.
28-Ports L3 Managed Industrial Ethernet Switch,16x1000Base-X SFP,8x1G Combo RJ45/SFP with 4x1G/2.5G/10GBase-X SFP+ slot,Support DI/DO/RS485,Rack-mount,36~75VDCRedundant Supply, -40 ~ 75°C wide-range
IES8528-4GX24GT-D-L2+ switch offers 4x1G/2.5G uplinks, providing a cost-effective distribution layer for communication networks.
28-Ports L2+ Managed Industrial Ethernet Switch,24x10/100/1000M RJ45 with 4x1G/2.5GBase-X SFP slot, Rack-mounting,36~75VDCRedundant Supply, -40 ~ 75°C wide-range,DI/DO/RS485 supported.
IES6520P-4GX16GT-4BT-D intelligent access switch features zero-touch deployment, built-in ACL and PoE++, support DI/DO/RS485 connector,purpose-built for high-density endpoint access.
20-Ports L2+ Managed Industrial Ethernet POE++ Switch,16x10/100/1000M RJ45 POE with 4x1G/2.5GBase-X SFP slot, Guide Rail,44~57VDCRedundant Supply, -40 ~ 75°C wide-range,DI/DO/RS485 supported.
III. Minimal Horizontal Expansion Technical Advantages
Adding new energy storage units only requires adding one IES6520P-4GX16GT-4BT-D in the corresponding small ring, without modifying the core, achieving "plug-and-play" expansion.
Industrial-Grade High Availability
Full series -40°C to +75°C wide temperature, EMC Level 4, redundant dual power supply, meeting harsh outdoor energy storage cabin environments; ring network self-healing <20ms, zero packet loss for single-point failures.
Gigabit to Unit / 10-Gigabit Core
Access→Aggregation 1G/2.5G fiber uplink, Aggregation→Core 10G bundled, ensuring 1G/2.5G dedicated bandwidth per unit, 40G upstream without blocking for core, can carry millisecond-level protection tripping and HD video concurrently.
Three-Layer Isolation, Security Zoning
Core IES8728 L3 Supports static and dynamic routing, RIP, OSPF, BGP4,ECMP, VRRP, DHCP server, can divide power control, battery management, video monitoring into independent VRFs, achieving "primary security + secondary security" unified access.
Unified PoE Power Supply
Access switch 16×PoE (4x PoE++ 90W) ports, directly powering cabin BMS slave control, IP cameras, environmental sensors, reducing on-site power cabling by more than 30%.
Ring-Star Hybrid, Visualized O&M
Small rings adopt ERPS automatic topology discovery, core sends SNMP/Modbus-TCP to NMS, one topology map displays 15 cabins 150+ nodes, fault location time reduced from hour-level to minute-level.
Low Latency, Meeting Relay Protection Requirements
Measured cross-layer forwarding latency <5µs, GOOSE message end-to-end <4ms, fully meeting NB/T 42086 energy storage station protection "<10ms" hard indicator.
Future-Ready
Core 4×10G can smoothly upgrade to 25G/40G, IPv6/TSN ready, providing bandwidth and protocol foundation for subsequent energy storage Zone II AI local analysis, cloud-edge collaboration.
