Quantcast Long Range System Planning

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8.4.2 Power Requirement Study. Data from the power requirement study provides
information to forecast load growth. The following historical data is collected:
(a)
Total peak demand.
(b)
Total annual demand.
(c)
Total annual energy used.
(d)
Purchases for a given period of time (at least five years).
Projecting these values on a graph gives an indication of future demand. The power requirement
study will also show the annual losses and load factors for both past and future years.
8.4.3 Long Range System Planning. Long range planning studies provide an outline for
system growth and information for short term planning of system improvements. It is essential to
provide the economical development of a system, assuring adequate service at the lowest cost.
Long range planning is best provided using a map of the system that indicates the existing
facilities (with their associated loads) and future construction. A study of the map will help the
system engineer ensure that changes to lines or substations will not effect the overall plan of
development.
8.4.3.1 Summary of Long Range System Planning. Long range system planning must be
continuous, due to changing conditions. The planning procedure must, consequently, make
provisions for updating the plan. It must also provide a viable approach for implementing the
plan into action. Maintaining the plan (map) is a continual process consisting of the following
steps:
(a) Review the Base Master Plan annually. The Base Master Plan is a comprehensive
study of the many planning factors (i.e.; electrical requirements, local industry, geology, rail
routes, population growth, etc.) involved in the facility construction or modification of a naval
activity. The Shore Station Development Map, based on this study, is a graphical
representation of the current and planned facilities. The map should be reviewed annually and
prior to the design of new facilities. The map should also be updated, as necessary.
(b) Review the data on the existing system for accuracy and completeness. An analysis
of the existing system is made to furnish the engineer with a foundation upon which to base the
long range plan. This analysis should include a review of the condition of the existing system.
(c) Prepare contingency plans for possible, but uncertain, future expansion. This
requires research of load levels with the capacity to support future expansion of the system.
(d) Select the most logical of the contingency plans when system changes are required.
An examination of the contingency plans serves to determine the most sensible and economical
method for transition from the existing system to the long range system.
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