Factors Making Site Selection For a Substation

making site selection

Making Site Selection and Location for a Substations

The following factors are considered while making site selection for a substations.


  1. Type of Substation

The category of substation is important for its location. For example a step-up substation, which is generally a point where power from various sources (generating machines or generating stations) is pooled and stepped up for long distance transmission, should be located as close to the generating stations as possible to minimize the transmission losses. Similarly a step-down substation should be located nearer to the load center to reduce transmission losses, cost of distribution system and better reliability of supply.


2. Availability of Suitable and Sufficient land

The land proposed for a substation should be normally level and open from all sides. It should not be water logged particularly in rainy season. The site selected for a substation should be such that approach of transmission lines and their take off can be easily possible without any obstruction. The places nearer to aerodrome, shooting practice grounds etc. should be avoided.



3. Communication Facility 

Suitable communication facility is desirable at a proposed substation both during and after its construction. It is better, therefore, to select the site along side on existing road to facilitate an easier and cheaper transportation.

4. Atmospheric Pollution


Atmosphere around factories, which, may produce metal corroding gases, air fumes, conductive dust etc…, and nearer to sea coasts, where air may be more humid and may be salt loaded, is detrimental to the proper running of power system and therefore substations should not be located near factories or sea coast.


5. Availability of Essential Amenities To The Staff

The site should be such where staff can be provided essential amenities like school, hospital, drinking water, housing etc,

6. Drainage Facility

The site selected for the proposed substation should have proper drainage arrangement to avoid pollution of air and growth of micro-organisms detrimental to equipment and health.

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