Table 2 Intelligent data collection devices in smart grid
Intelligent device | Technology | Application |
|---|---|---|
Advanced metering infrastructure (AMI) | Integration of smart meters, data management systems and communication networks to provide bidirectional communication between customers and utilities. | Remote meter configuration, dynamic tariffs, power quality monitoring and local control |
Phasor measurement unit (PMU) | Real-time measurements (30 to 60 samples/second) of multiple remote points with a common time source for synchronization | Electrical waves measurement of power grid |
Wide area monitoring system (WAMS) | An application server to deal with the incoming information from PMUs | Dynamic stability of the grid |
Remote terminal unit (RTU) | A microprocessor-controlled device that transmitting telemetry data | Information collection of system operation status |
Supervisory control and data acquisition (SCADA) | Both manual and automatic | System monitoring, event processing and alarm |
Intelligent electronic device (IED) | Monitoring and recording status changes in the substation and outgoing feeders | Combination of different relay protection functions with measurement, recording and monitoring |