Real-time SCADA history collection and query
Collects live meter and device data, stores it historically, and serves queries via REST APIs for analytics and compliance.
What it is
The Historian Web Server is a platform component that captures real-time SCADA telemetry from meters and devices, persists it to the database, and exposes comprehensive query APIs for historical analysis. It ingests data via MQTT or TCP, runs background processors for load profiles and meter events, and delivers REST endpoints for retrieving load profiles, billing data, real-time readings, and diagnostic information — enabling utilities to track consumption patterns, investigate anomalies, and meet regulatory reporting requirements.
Key benefits
Continuous telemetry capture
Automatically collects real-time meter readings, device status, and event data without manual intervention. Background processors handle load profiles, billing intervals, and three-phase data independently.
Flexible query access
REST APIs deliver historical data (load profiles, instantaneous readings, billing records, alarms) on demand. Operators and analytics platforms query the full history without re-polling devices.
Audit-ready history
Persistent storage of all telemetry supports regulatory compliance, capacity planning, demand response verification, and billing dispute resolution.
Pluggable storage writers
Multiple history data writers allow customization: store to the platform database, export to time-series backends, or feed external analytics systems without code changes.
Capabilities
- Ingest real-time meter and device telemetry via MQTT or TCP messaging
- Persist load profiles, instantaneous profiles, billing data, events, and diagnostics to the platform database
- Query historical data by controller, tag, time range, and data type via REST APIs
- Calculate and store assessed/missing data for incomplete billing periods
- Track device communication status and grid-view aggregations
- Export data to external systems through pluggable writer interfaces
- Support multiple history data types: LP, IP, real-time, billing, alarms, events, three-phase, power quality metrics