3. Automated Control System for Power Supply Facilities

The following tasks are performed by this automated control system:

  • status indication of high-voltage cell circuit breakers (on, off, tripped – including description of the reason of tripping);
  • status indication of grounding blades of HV switches (grounded);
  • status indication of automatic switches in transformer substations (on);
  • common signals: failure (general), warning, voltage monitoring in operating circuits, ground leak protection activation;
  • substation opening alarm (door limit switches);
  • remote control of HV cell circuit breakers;
  • measurement of bus section voltage;
  • power and current measurement at inlet and outlet feeders;
  • commercial accounting of active and reactive energy at inlet and outlet feeders;
  • power factor monitoring;
  • monitoring of harmonic distortions in bus sections of indoor switchgear;
  • monitoring of microprocessor protection status of each HV cell;
  • monitoring of HV protections activation with reason explanation;
  • preparation of reports and records on routine switchings, alert conditions and power consumption.

The information is displayed at the following automated workstations (AWS):

  • AWS of the mining processing plant power supply dispatcher;
  • Chief power engineer AWS (as report forms with technical and economic figures of electric power supply system operation for 3 min/30 min/hour/shift/day/month/quarter/year);
  • Deputy chief power engineer AWS.
  • Siemens and ABB equipment shall be considered as hardware and software complexes preferred for automation of this technology (power equipment and microprocessor protections must be provided by the same manufacturer).

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