SER — Sequence of Events (SOE) Recording

What is SER?
SER — SEQUENCE OF EVENTS (SOE) RECORDING
Sequence of events recording (SER) is performed by microprocessor based systems, which monitor collected data inputs and record the time and sequences of the changes.
Sequence of events recorders rely on external time sources such as GPS or radio clocks to record the exact time of state of each change.
- Sequence of Events Recording (SER) allows to rapidly analyse the root of the analomy thanks to the secure recording of events in the order of occurrence.
- It can thus be used as a diagnostic tool to minimize plant downtime and analyze blackouts.
- The recorders are often integrated in or interfaced with a SCADA systems, RTUs, PLCs or control centers.
- Today, modern RTUs, PLCs and IEDs can time-tag events to the nearest millisecond, not requiring to incorporate separate SER devices into the SCADA systems.

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Grid & Substation Automation
- RTU — Remote Terminal Unit
- SCADA — Supervisory Control and Data Acquisition
- IED — Intelligent Electronic Device
- SER — SEQUENCE OF EVENTS RECORDING
RTU most commonly stands for Remote Terminal Unit, but is sometimes also used as an abbreviation for Remote Telemetry Unit or Remote Telecontrol Unit.
RTUs are devices that rely on microprocessors and communication interfaces to automatically monitor and control field devices and establish a bridge to the plant control or SCADA (supervisory control and data acquisition) systems.
Supervisory control and data acquisition (SCADA) systems collect, monitor and process real-time data to:
- Automate and control industrial processes remotely or locally
- Provide a human-machine interface (HMI) to directly interact with devices such as relays, sensors, generators, pumps, valves and others
- Record events and automate reporting
An Intelligent Electronic Device (IED) is a term used in the electric power industry to describe microprocessor-based controllers of power system equipment, such as circuit breakers, transformers and capacitor banks.
Sequence of events recording (SER) is performed by microprocessor based systems, which monitor collected data inputs and record the time and sequences of the changes.
Sequence of events recorders rely on external time sources such as GPS or radio clocks to record the exact time of state of each change.
SER & iGrid
Our embedded systems can time stamp events with a milisecond accuracy and use their internal high accuracy Real-Time-Clock (RTC) to stay synchronized after losing connection to the masterclock

iRTU – With I/Os for Direct Data Acquisition

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