Costs of the energy
Power distribution systems serving industrial or commercial facilities represent a variety of costs to the owner. Obviously, the capital cost of the equipment is a concern, as is the cost of the energy which that power system delivers to the loads which convert electrical energy to a saleable product or service.
Ultimately, as the designer of the system struggles with devising a system arrangement and choosing equipment, he must face the reality that no matter how clever he is, no matter how much redundancy he builds into the system, and no matter how much he pays for premium quality components, he simply cannot build a system which will never fail.
This is where system protection, and protective relays become important. If component failure is inevitable, then it is necessary to provide a means of detecting these failures.
Better and faster protection afford a number of desirable attributes, all of which ultimately result in saving the owner of the system money through cost avoidance.
When component distress is detected and corrected earlier, the damage associated with the failure is minimized, which results in lower repair costs (or even the ability to repair versus the need to replace). At the same time, faster and more sensitive detection of problems means that the cause of the problem can be corrected while it is still a minor problem, and before it escalates into a major catastrophe.
|Title:||Relay Selection Guide – GE Power Management|
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