BLIIoT BE190 IEC104 Edge I/O module was deployed to build a distributed temperature monitoring system, enabling intelligent temperature data acquisition and transmission.
Case Details
A 220kV smart substation required an upgrade to its transformer temperature monitoring system to enable real-time collection and remote monitoring of main transformer oil temperature and winding temperature, thereby improving equipment operation safety and inspection efficiency.
The BLIIoT BE190 IEC104 Edge I/O module was deployed to build a distributed temperature monitoring system, enabling intelligent temperature data acquisition and transmission.
System Architecture
- Field Level: BE190 module installed in control cabinets near transformers.
- Data Acquisition Layer: PT100 temperature sensors collect key temperature data from transformers.
- Transmission Layer: Data is transmitted to the substation monitoring system via the IEC104 protocol.
- Application Layer: The power monitoring system visualizes data, performs analysis, and triggers alarms.
Hardware Configuration
- Main Module: BE190 IEC104 Edge I/O Module
- Expansion Module: Y53 (4-wire PT100 input module)
- Sensors: 4-wire PT100 temperature sensors (measuring range: -200°C to 850°C)
- Network: Utilizes the substation's existing industrial Ethernet.
System Functionality
- BE190 collects 4-channel PT100 signals via the Y53 module.
- Built-in linearization and cold-junction compensation algorithms.
- 16-bit ADC ensures high measurement accuracy.
- Converts raw data into engineering units (°C).
- Flags data quality (valid/invalid).
- Dead-band processing (default threshold: 0.5°C before upload).
- Cyclic Upload: Default 5-minute intervals for all temperature data.
- Change-Triggered Upload: Immediate upload if temperature exceeds threshold.
- Supports general interrogation and time synchronization.
- Sensor break detection.
- Communication interruption buffering (up to 100 records).
- Self-diagnostics (watchdog monitoring).
Benefits
- Real-time monitoring detects overheating risks early.
- Rate-of-change analysis predicts potential failures.
- Multi-level temperature alarms.
- Reduces manual inspections (from every 2 hours to once daily).
- Stores historical temperature data (up to 1 year).
- Enables remote diagnostics and maintenance.
- Cuts manual inspection costs by ~60%.
- Avoids unplanned outages, saving ~$20,000 annually.
- Extends transformer lifespan.
This solution demonstrates how the BE190 module enables digital transformation in transformer temperature monitoring, providing a reliable foundation for smart inspections and significantly enhancing substation operation and maintenance.
To learn more about the BE190 IEC104 Edge I/O Module, check
https://bliiot.com/products/iec104-edge-io-module-be190
