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).