How PQ Sapphire Uses Visualization to Simplify Data Analysis

When someone is responsible for analyzing and presenting data, visualization can make the difference between comprehension and lack of understanding. Having graphs, charts, models and easy to read tables in a presentation communicates the data in a clear and concise manner. When looking at power quality analysis software, visualization is also extremely important.

Sapphire has a large amount of visual tools to help not only understand the data, but to export the data for reports and for presentations. This helps the user to quickly identify and select faults and events.

On the overview tab, as seen below, there is a large amount of data available that can be seen at a quick glance.

PQSCADA Sapphire overview module

As can be seen, there are multiple meters, analyzers and digital fault recorders shown around the world. At a glance the user can see:

  1. Device status
    1. Online or offline
    2. Powered up or turned off
  2. List of events
    1. Pre-programmed
    2. User defined
  3. Real time Parameters
    1. Frequency
    2. Voltage

Having an interactive display such as the above allows a quick glance to determine system status. Using the widgets allows more information to be displayed, such as type of event, duration, magnitude and time. From this step simply clicking on an event that is displayed in the Widget and a predefined chart is rendered, showing the event. An example is shown below.

Voltage sag of single phase

Once again, a quick glimpse shows the phase responsible, the lowest magnitude, and the duration of the event. By some simple manipulation of the time, this can be expanded to see before and after conditions. You can also add the other phases, or currents or power, or any other quantity available, which will appear time stamped to the same time as shown above. For example, instead of going back and selecting the other 2 voltage phases on the overview screen, one can add them to this graph, as shown below.

Voltage sag presented as trend chart with RMS values at 1/2 cycle resolution and phasor diagram

Now the user has all three voltage phases visible, which shows three phase voltage sag. A quick click of the export key and this graph is on its way to co-workers, maintenance people, or PQ engineers.

In addition to the overview panel, the Investigation panel has many preset graphs and configurations to assist with the communication and analysis of power quality disturbances and faults. Below is a quick reference to what is available in Sapphire.

PQSCADA sapphire chart options

Giving presentations and reports with tables and graphs that are hard to interpret slows down the easy communication of critical data. Having visualization tools, dashboards, and standard based graphs to assist allows most anybody to quickly look over data and determine what actions need to be taken. These actions can involve calling in engineers, supervisors, or outside experts to help solve the problem. Having a ready visual tool makes this easier, and saves time and money during what could be costly power quality events.

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