Expand Synchrophasor - Sponsored Whitepaper

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A minimal synchrophasor system consists of phasor measurement units (PMUs) and integrates the collected data into centralized operator displays. This approach, while providing an immediate benefit over existing supervisory control and data acquisition (SCADA) systems, misses many opportunities for additional power system improvements. A more capable system includes a substation phasor data concentrator (PDC) with archiving capability or a distributed control processor such as a synchrophasor vector processor (SVP). These solutions greatly expand synchrophasor system capabilities.

Capture Wide-Area Disturbance Information The time stamps associated with synchrophasor data enable precise comparison of data collected at multiple locations. Use the archived PDC data to understand the cause of events, verify models, and analyze oscillations. The North American Electric Reliability Corporation (NERC) Standard PRC-002-2 establishes requirements to facilitate the analysis of power system disturbances. A substation PDC helps to fulfill these requirements.

Avoid Losing Data to Communications Interruptions When the communications network between the substation and the central office has an outage, you can retrieve the lost data from the substation archive to rebuild the original phasor data.

Improve Total System Security The substation PDC provides an additional layer of security. Using a layered security approach makes an attack more difficult. Because PMU functionality is often included with relays, the PDC is an important extra layer of security. Also, the substation PDC simplifies security management because the firewall rules are for a single device.

Increase the Diversity of Captured Synchrophasor Data Not all PMU data are typically required at the operations center. Use the PDC to select only the data you need at the main office or control center. Meanwhile, archive all PMU data at the substation. The archived data are available for offline analysis.
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