By Willis, H. Lee; Schrieber, Randall R
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Extra info for Aging power delivery infrastructures
Certainly utilization rates are higher, attention paid to reliability is greater than ever, and more effort is being directed at improving efficiency than ever before. The reason is that when one has less of something, more attention is given and more effort is put into getting the most out of it. Modern utilities understand that all of the virtues they desire boil down to one resource: money, and that they will never have enough to meet all possible needs based on traditional planning standards.
The impact of this on all but the most efficiently managed and staffed organizations is to increase duration of equipment outages (and hence customer interruptions). There are more numerous outages to repair, taxing the restoration and repair resources to the limit and often requiring repair of one to wait on another. SAIDI increases slightly as a result. Also quite important for the utility’s bottom line, these higher repair and restoration needs increase overall costs. 1c. More inspection and testing efforts required.
3 lists four statistics for each system. The first, “Electrical - $,” is the reduction in overall (lifetime) cost of distribution that could be wrought with respect to the traditional primary distribution paradigm of moving power. This is the savings in new capital additions that result from improving how the distribution system is designed to do its traditional job – moving power, without the use of appropriate “smart” equipment and using smart equipment. The second statistic, “Existing - $” shows how much the useful utilization of an existing distribution system can be improved with respect to that traditional paradigm.
Aging power delivery infrastructures by Willis, H. Lee; Schrieber, Randall R