View Real-Time Synchrophasors
SEL built a worldwide, real-time system using our synchrophasor products. Click the link below to view streaming synchrophasor data. Can you build a system like this? Yes! SEL meters and relays include synchrophasors as a standard feature, and our new synchroWAVe Central® Software displays the information in real time.
The description below explains how this system works, and a quick-start guide link will help you use the synchroWAVe Central Software.
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To access synchroWAVe Central Demo, please login with your mySEL account credentials.
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System Overview
In 2003, SEL built the first system that collected synchrophasor data from across the United States and displayed this information on a web page for viewing. Over the years, we have upgraded this system as more of our solutions include synchrophasor technology. Today, SEL has installed SEL-421, SEL-700G, SEL-351A, and SEL-451 Relays along with SEL-2407® Satellite-Synchronized Clocks. These devices are located in our field offices. Each relay measures local power system signals at the wall outlet. The SEL-2407 Clock provides an IRIG-B time source to the relays. These relays are just some of the many SEL devices that includes synchrophasor technology.
The resulting synchrophasor data are communicated over a VPN connection to SEL's headquarters. The data are then concentrated using an SEL-3373 Station Phasor Data Concentrator (PDC). All of the synchrophasor streams are then displayed with SEL-5078-2 synchroWAVe Central Software.
All of these solutions are available from SEL today.
synchroWAVe Central Demonstration Instructions
When you first connect to synchroWAVe Central, you will see a webpage similar to the following figure.
- Across the top of the page is a time-range bar. For the web demonstration, a single day of data is archived in a rolling buffer. Click on the horizontal time-range bar to scroll through historical data. Double-click to zoom in.
- In the upper right corner of the graph is a small clock symbol. Clicking on this symbol sets the displays to real-time mode.
- In the upper left corner is a time resolution drop-down menu. Use this menu to zoom in or out to different time spans.
- For the graphs, a single click to the left or right pans the data. A double click provides zoom-in functionality. The vertical arrows to the left enable setting the vertical axis.
- Across the bottom are three tabs, providing one view for each independent section of the power system. Select a tab to show signals from that portion of the system.
- The table in the upper right portion of the page shows the status.
- The table in the lower right part of the page has links to archived events. synchroWAVe Central allows saving events. Select an event to view historical data for the associated date and time. For the web demonstration, three preset events are available:
- S. California Outage—This was a West event. Therefore, also select the West view.
- East Earthquake—This event was in the East portion of the system. Therefore, also select the East view. Some of the East locations were not monitored during this event, and therefore not all graphs will be populated.
- Texas Frequency Drop—This event was in Texas. Therefore, also select the Texas view. Similar to the East Earthquake event, not all locations were monitored during this event.
- There is a question mark icon in the upper right corner of the page. Click on this icon to download a one-page document that summarizes available commands.
Comparison of Demonstration to Full Version of synchroWAVe Central
synchroWAVe Central Software is a full-featured visualization and analysis tool for synchrophasor systems. The website version of this software has some defined limitations compared to the full software.
- The tabs across the bottom of synchroWAVe Central allow multiple views into the power system. For the website, these are fixed and cannot be changed. This is why an appropriate view tab must be selected for each event.
- With the full software, the view tabs enable seeing event and real-time data from different perspectives. The full software provides a way to set up each view with the data of interest.
- For the website, only a single day of rolling archives is available, along with three short event archives. Scrolling outside of these ranges results in no data displayed. For the full software, all received data are archived.
- The website does not allow saving new events. The full software does allow this.
- If you notice that no data are displayed in any of the graphs, click on the small clock icon in the upper right corner to return to real-time data.
- The full software displays all of the data types received from phasor measurement units (PMUs).
- The full version of synchroWAVe Central has additional features, and many more are planned. Contact SEL to learn more.