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PLC Panels and SCADA Systems

The SCADA system is designed to have the following functions:

  1. Supervision
  2. Historical data processing
  3. Event log
  4. Report and printing

SUPERVISION

Operating mode of the Interlock PLC (MAN, AUTO)

Status of equipments

Status of VCBs (OPEN, CLOSE, TRIP, REMOTE/LOCAL, RACK IN/ RACK OUT).

Measured value indication

  • Busbar voltage.
  • Current, active power, reactive power, power factor of incoming main circuit.
  • Current, active power, reactive power, power factor of outgoing feeder circuit.
  • Temperature and oil level of genset; voltage, current and power of gensets.
  • Voltage of batteries.

Alarm indication

  • Status of VCBs (in Remote mode) that do not follow control signal.
  • Recommended actions that the operator should take on the VCBs in local mode such that the Interlock Matrix is satisfied.
  • Trip status of VCBs.
  • Overvoltage or under-voltage of busbar.
  • Overcurrent in incoming main circuit / outgoing feeder circuit.
  • Overvoltage or under-voltage of batteries.
  • Communication errors.

Historical data processing

  • Real Time measurement data (current, voltage, power) are periodically collected and stored in database.
  • Historical data sampling intervals can be set by the administrator.
  • Waveform of current, voltage, power measurement (historical or real time) over a specific period can be displayed on the HMI monitor.

Event log

  • Start and stop SCADA system.
  • Alarms.
  • Working mode changes.
  • Error command in manual control mode.
  • User login and logout of workstation.

Report and printing

  • Report alarm events.
  • Print the waveform of current, voltage, power measurement over a specific period.
  • Print the alarm log over a specific period.
  • Print the current screen.