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Real-Time & Historical Monitoring Visualization A component of the Optical Distribution Monitoring System (ODMS) is the real-time and historical visualization of data collected from current flow within the distribution grid. One method of displaying the data is with AirakView, which presents a hierarchal view of how the data is organized within the monitored electrical grid. Below you will find screen shots of different aspects of AirakView, highlighting the power of the ODMS monitoring solution. 3-Phase Load and Temperature Profiles
3-Phase Load and Temperature Profiles
The graphic above shows the installation hierarchy on the left side of the window, The top trace shows the three phases monitored at this node, each in a separate color. The horizontal axis for both graphs is time, while the bottom graph shows real-time temperature at the monitoring point. Together, load information and temperature can be used to establish available remaining capacity of utility assets.
Harmonic and Total Harmonic Distortion (THD) Profiles
The graphic above shows the characteristics of a single phase. The upper right graph shows the harmonic profile to the 32nd harmonic, and is determined by a user-moveable cursor that is shown in yellow on the bottom graph. Also shown on the bottom graph is the monitored phase's load current, plotted with total harmonic distortion (THD). For the graphic above, an abnormal power quality event is indicated and can be see as the sharp spike of THD data. The time frame of viewed data is completely adjustable by the user.
Typical Load Profile
The graphic above shows a typical load profile, taken from the period 6/21/06 through 7/12/06. The data on the left shows that a series of abnormal events occurred, causing the load to more than quadruple on the monitored circuit. This in fact was due to emergency switching that "doubled up" circuits, the utility's response to the impact of severe weather. After a day the affected feeder was bypassed, causing the load to drop to zero while repairs were being affected. The remaining data shows a normal load profile, with the weekend loads clearly visible.
Significant Abnormal % THD Events
The graphic above shows abnormal THD events that are occurring at the monitored point. The vertical axis is "% THD", and is referenced to the current in the 60-Hz fundamental. AirakView gives you the ability to capture these events, zoom in to determine duration and frequency, and begin assessing whether individual phases are more susceptible to adverse THD events.
Find out more about the hardware that make it happen by clicking here |
Page Modified Saturday February 07, 2009 |
