You can set the operating time to be automatically aggregated to predefined and freely selectable time periods such as a minute, an hour, a day, a week, a month or a year. In data retrieval any time period is supported – for example, if you would like to find out when the temperature has been above 32 degrees during the last four days.
The operating time can be calculated from a primary device such as transformer, generator or rotating motor with any kind of pump, like a water leakage pump or an air pressure pump.
To get a grip on the benefits of using operating time, let’s take a little bit closer look at the examples of some applications with pumps and transformers.
- Quite often we have an underground storage tank for water leaks, equipped with a leakage pump. In normal conditions the leakage pump runs known, more or less equal time within a time period. When analyzing the operating time with Historian we can identify the trend of leakage over a longer period and thus take preventive actions to avoid the problems of increasing leakage. The total run time can also be used to plan and define motor and pump maintenance schedules and actions. Let’s take yet another example. Air pressure is used in several applications and typically generated by an automated compressor and an air tank combination maintaining desired pressure level for operations. In some applications incipient air leakage could be detected at an early phase by supervising the operating time trend.
- It is usually a preference for substations to be aware of how long each of their transformers has been energized and how the total energy flow has been shared between the available resources. In addition, the time the load has been above a user-defined limit - for example, over 115% of the nominal power and thus causing a severe overloading effect for a transformer - will provide valuable information about an aging transformer to the asset responsible.
Furthermore, in some cases it is of interest to have the knowledge about the maintained window of irrelevant voltage level or to present a voltage level duration curve.
As a summary, operating time can eliminate undesirable effects and help to follow the real-time condition of objects, to name but a few. Try out MicroSCADA Pro Historian yourself and let us know how operating time has benefitted you.
Editorial contact: Heidi Hautala