By Hartmut Kiank
Whilst making plans an business energy offer plant, the explicit specifications of the person construction technique are decisive for the layout and mode of operation of the community and for the choice and layout and rankings of the operational apparatus. because the genuine technical hazards are usually hidden within the profound and complicated making plans activity, making plans judgements might be taken after dependable and cautious attention as a result of their deep results on offer caliber and effort efficiency.
This booklet is meant for engineers and technicians of the power undefined, commercial businesses and making plans departments. It offers easy technical community and plant wisdom on making plans, install and operation of trustworthy and fiscal business networks. additionally, it enables education for college kids and graduates during this field.
In a simple and understandable means, this e-book informs approximately answer competency won in lots of years of expertise. additionally, it additionally deals making plans techniques and data on criteria and requirements, using which guarantees that technical hazards are shunned and that creation and commercial techniques could be performed successfully, reliably and with the top quality.
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Extra info for Planning guide for power distribution plants : design, implementation and operation of industrial networks
This discretionary margin allows the compromise found to tend more towards low investment costs or more towards a high quality of supply. Using the fundamentals of planning explained in Part A as a basis, Parts B and C of this book focus on providing planning recommendations for the design, dimensioning and operation of industrial medium-voltage and low-voltage power systems. 2]. 1. 5 66 69 123 110 115 145 132 138 (170) (150) (154) 245 220 230 1) These values should not be used for public distribution systems.
22 shows that the compromises only make sense if regions with only minimum improvement of objectives or clear worsening of objectives are avoided. For that reason, application of the sensitivity criterion is an important absolute condition for appropriate compromises. SR SR 4 Supply reliability SR Region : Avoid if possible Region : Rule out entirely 1 Investment costs Fig. 22 Sensitivity verification of objectives a and f Comparison criterion In certain cases, comparisons can make it easier to define degrees of compliance with objectives.
One important economic criterion are the costs incurred for the short-circuit-proof dimensioning of the MV switchgear and MV cables. The main factor influencing these costs is the choice of the nominal system voltage. With the following short-circuit powers, which refer to the chosen nominal system voltage, costefficient use of equipment is possible: • 250 MVA ≤ S k″ < 350 MVA if UnN = 6 kV • 350 MVA ≤ S k″ < 500 MVA if UnN = 10 kV • 500 MVA ≤ S k″ ≤ 750 MVA if UnN = 20 kV The technical criteria are particularly relevant to the choice of short-circuit power.