الفهرس 
General Review of Distribution System PlanningOnly 14 pages are availabe for public view
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Abstract
Planning of electrical distribution systems is a process that alms to
guarantee an adequate technical performance of the distribution system in
return of a reasonable economical cost during a certain period of time.
Traditional distribution system planning models were, and still are,
devoted to four particular objectives, i.e.:
• Optimum substation size and location.
• Optimum feeder routing.
• Optimum conductor sizing.
• Optimum voltage level.
Some models can handle the first and second objectives simultaneously, but
the third and the fourth objectives are always tackled in separate and
different approaches. As a result, there exists no single model that targets all
the objectives of the distribution system planning problem comprehensively.
This work presents a new model that addresses in a single problem
formulation all of the four objectives stated before. The proposed model
takes the form of a non-linear programming problem and is based on
deriving new formulations for the cost functions and the constraints
associated with distribution substations, cables and overhead lines. The
solution procedure utilizes the classical optimization method known as the
sequential quadratic programming method. Therefore, the result obtained
fulfills the requirements of mathematical optimality.
The presented model and the solution method are tested on a variety of
distribution system planning problems and are found suitable for planning
primary distribution networks in vacant areas as well as expanding existing networks.
The thesis demonstrates a variety of applications such as:
• Expansion of existing UGC distribution systems.• Planning of distribution UGC systems in vacant areas.
• Planning of overhead distribution systems in vacant areas.
At the end of the thesis, a comparison between the model introduced and
the main distribution system planning models is given. The comparison
points out the major advantages obtained when the new model is utilized.
This thesis is arranged in five chapters, the first of which is a review of the
distribution system planning models since the 1960’s. In chapter two, a new
model for distribution system planning is introduced. The solution of the
new model requires a sufficient knowledge of optimization techniques.
Thus, chapter three was written to fulfill this requirement. In chapter four,
different applications of the new model in distribution system planning are
given. In addition, chapter four includes applications of the conventional
models to the same problems solved by the new model for the purpose of
comparison. Conclusions and recommendations for future work are given in
chapter five.