Guide to Electrical Power Distribution Systems By Anthony J. Pansini
This edition continues the practice of updating its contents to reflect changes affecting electric distribution systems. It continues its original role of providing information in a non or semi technical manner to persons working on such systems enabling them to perform their duties in an enlightened way. This contributes not only to a greater quality of production, but more importantly, with greater safety to themselves and the general public, the consumers they serve.
While the effects of deregulation have been more pronounced on the generation and transmission components of the supply chain, it has also had an impact on the distribution system with its cogeneration and distributed generation features.
Improvement in materials and methods continue to contribute to the economic and environmental betterment enjoyed by consumers. Predominant among these include the gradual replacement of heavier porcelain insulators with polymer (plastic) ones, the employment of insulated bucket vehicles making climbing with the use of spikes a lost art. Improvements in “solid” type insulation in cables, and more efficient machinery for placing them underground. Thus narrowing the economic differences between overhead and underground installations.
The distribution system is the most visible part of the supply chain, and as such the most exposed to the critical observation of its users. It is, in many cases, the largest investment, maintenance and operation expense, and the object of interest to government, financial agencies, and “watch dog” associations of concerned citizens. As such, the desirability of knowing how and why it is so constituted becomes obvious.
Distribution systems have also been affected by deregulation, although not in the same manner as transmission systems, Figure P-1 (opposite). Where additional transmission or generation was not available or too great an expense to supply some additional loads, Distributed Generation made its entry on Distribution Systems. Here, small generating units usually powered by small gas turbines (although other units such as wind powered, solar, fuel cells, etc. may be involved) are connected to the system as are cogeneration units, both with possible hazard to safety.
These notes were begun in the early 1940’s as classroom material, part of a rapid training program for line personnel. The program was highly successful, reflected in greater safety and production among other benefits, and achieved national attention.
Once again, our thanks to our old friends, Ken Smalling and The Fairmont Press for their help and support.
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