Battery Energy Storage Monitoring (BESS)

The problem

The battery BMS, PCS, meters and container HVAC report separately, so the operator has no combined view of state of charge, cell temperature and cooling when an alarm occurs.

Solution overview

MILESGO gateways collect data from battery management systems (BMS) of storage units, power conversion systems (PCS), electricity meters, temperature and humidity sensors, smoke detector contacts over Modbus TCP / Modbus RTU, and deliver it to SCADA, a cloud platform (MQTT), the utility SCADA (IEC 104 / IEC 61850), SMS, email and messaging alarms as MQTT / IEC 60870-5-104 / OPC UA. Field equipment keeps its own protocol and control logic; integration is done by configuration and point mapping, not custom code.

Typical scope

battery management systems (BMS) of storage units
power conversion systems (PCS)
electricity meters
temperature and humidity sensors
smoke detector contacts

Protocol path

Modbus TCP / Modbus RTU → MQTT / IEC 60870-5-104 / OPC UA

Implementation checklist for the project manager

Any set-point control of PV or storage must follow the grid-connection requirements; start with monitoring only.
Commission in read-only mode first; enable write / control points only after the client approves each one.
Collect register maps and protocol documents from every equipment vendor early; a missing map is the most common delay.
Define an alarm matrix (priority, recipient, escalation) and test every alarm end to end at SAT.
Keep OT networks segregated and use VPN for remote access instead of opening ports to the internet.
Confirm local storage so data survives network outages, and define the retention period.

Project deliverables

Signed point table and protocol mapping
Gateway configuration files and backups
IP address plan and network drawing
FAT and SAT test records
As-built documentation and operator training

System architecture

Field layer: battery management systems (BMS) of storage units, power conversion systems (PCS), electricity meters, temperature and humidity sensors, smoke detector contacts, connected over Modbus TCP / Modbus RTU. Edge and integration layer: MILESGO protocol gateways and edge controllers, mounted on DIN rail in existing panels, polling each device, time-stamping values and buffering them locally. Upper layer: SCADA, a cloud platform (MQTT), the utility SCADA (IEC 104 / IEC 61850), SMS, email and messaging alarms, which receives the data as MQTT / IEC 60870-5-104 / OPC UA. Remote access for maintenance runs over VPN rather than open internet ports.

System composition

Field devices: battery management systems (BMS) of storage units, power conversion systems (PCS), electricity meters, temperature and humidity sensors, smoke detector contacts
Edge / integration: MILESGO protocol gateways and edge controllers
Upper systems: SCADA, a cloud platform (MQTT), the utility SCADA (IEC 104 / IEC 61850), SMS, email and messaging alarms (MQTT / IEC 60870-5-104 / OPC UA)
Tools and commissioning: Web-based configuration, point table import/export (Excel), off-site simulation and on-site diagnostic tools

Software and AI capabilities

Anomaly detection on trend dataRoadmap
Load and consumption forecastingRoadmap

Delivery steps

1
Site survey and point list
Inventory devices, protocols, register maps, panel space, power and network paths.
2
Design and point table sign-off
Map every point to the target protocol and system; agree it with the client and the upper-system contractor.
3
Configuration and FAT
Build the gateway configuration off site, simulate it and test against the signed point table.
4
Installation and wiring
Mount gateways on DIN rail, wire RS-485 / I/O / Ethernet, apply the IP plan.
5
SAT and alarm tests
Verify values against local readings, test every alarm and command end to end.
6
Handover and support
Hand over configuration backups, point table and as-built documents; train operators.

Customer value

One view of all subsystems instead of separate vendor consoles
Alarms reach the right person by SMS, email or messaging apps
Reliable trend data for optimisation and fault diagnosis
Timestamped records for compliance and reporting

Tell us about your project

Send the protocols, point count and target system. A sales and engineering pair reviews every submission.

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