By Willis, H. Lee; Schrieber, Randall R
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Extra resources for Aging power delivery infrastructures
These reasons and a host of similar secondary effects increase operating cost at the distribution level by 10%–20%. 2 and the discussion above, the authors have indicated that this particular cause among the four presented here typically contributes as much or more to a utility’s reliability and cost problems than any of the other three. This is because the obsolete layout interacts so much with the other aging issues. It exacerbates equipment aging. Solutions require an analysis that is very sensitive to the weaknesses of traditional engineering methods.
A score that ranges from 0 to 100 in units of 1 gives the impression of great accuracy, but in practice leads to no better results than a 1-10 scale or an A-B-C-D-F scale. The utility’s goal is to find equipment that is in bad condition. Frankly, a digital scale of [bad, not bad] can get a big portion of the job done. Aging Power Delivery Infrastructures 35 Conditions Have Consequences Conditions have consequences – they mean something with respect to the utility’s goals. The goal is not to develop a scoring system that puts equipment into “bins” on the basis of available data.
When digital computers are used, that level of engineering becomes quite simple. ” This cultural paradigm is exacerbated by the following facts: 1) Distribution is of relatively low voltage (compared to other parts of the power system; 2) the equipment involved is rather small and inexpensive (compared to other levels) and; 3) the system is normally laid out in radial form (which makes power flow easy to calculate). In fact, the power distribution system is by far the most difficult of all layers in the power system to plan and engineer to a truly high standard.
Aging power delivery infrastructures by Willis, H. Lee; Schrieber, Randall R