Various input/output (I/O) modules connected to the substation equipment gathers the field parameters data, including status of switches, circuit breakers, transformers, capacitors and batteries, voltage and current magnitudes, etc. The above figure shows the typical SCADA based substation control system. Also, it collects the historical data of the substation and generates the alarms in the event of electrical accidents or faults. SCADA system continuously monitors the status of various equipments in substation and accordingly sends control signals to the remote control equipments. In substation automation system, SCADA performs the operations like bus voltage control, bus load balancing, circulating current control, overload control, transformer fault protection, bus fault protection, etc. The major functions of SCADA can be categorized into following types.Īlso read: Fault Current Limiter and Their Types Substation Control using SCADA Therefore, distribution SCADA supervises the entire electrical distribution system. SCADA improves the reliability of supply by reducing duration of outages and also gives the cost-effective operation of distribution system. It restores the power service during fault condition and also maintains the desired operating conditions. SCADA performs automatic monitoring, protecting and controlling of various equipments in distribution systems with the use of Intelligent Electronic Devices (or RTUs). SCADA maximizes the efficiency of power distribution system by providing the features like real-time view into the operations, data trending and logging, maintaining desired voltages, currents and power factors, generating alarms, etc. Modern SCADA systems replace the manual labor to perform electrical distribution tasks and manual processes in distribution systems with automated equipments.
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