IEEE 1127:2013 pdf free download – IEEE Guide for the Design, Construction, and Operation of Electric Power Substations for Community Acceptance and Environmental Compatibility
4.1.1.1 Proximity to electric load or generation
Therc are benefits to both community acceptance and the electrical system in locating substations near theelectrical load or generation site due to shorter lines required.Typically the overhead lines (bothtransmission and distribution) provide more concerms to the public than the substation. However, locationof the substation dictates some line routing considerations.
4.1.1.2 Proximity to transmission and distribution lines and availability of access for futurelines
The substation site selection affects the line routing for both transmission and distribution lines. The linerouting and right-of-way(ROW) requirements typically have a significantly larger impact on the publicthan the substation as the ROW is adjacent to much more area. Siting a new substation in an area where allthe lines enter and leave the substation in the same direction can creatce a new transmission corridor withseveral lincs constructed in the same area. This not only impacts the public with the corridor area withmany lines, but it may have system reliability issues as well.
Substation layout considerations also may have an impact on line routing. Space limitations inside thesubstation can limit where specific lines enter the substation and the substation layout may requireunwanted line crossings or additional ROW requirements outside the substation.
Some transmission line designs utilize double-circuit structures to carry two transmission lines on the samestructure. This can have permit approval and system reliability implications. Some governmental agenciesare aware of the reliability issucs and limit the amount of double-circuit installation on high-voltagetransmission lines. This can create the need for wider transmission corridors to accommodatc the number oflines entering a substation.
4.1.1.3 Substation size requirements
lt is important to consider the initial substation construction requirements as well as future substationexpansion per the ultimate design in order to determine the substation size requirements. The ultimatesubstation may require more area than what is inside the initial fenced area. It is important to be aware ofthe number of existing and future transmission and distribution lines and associated ROW requirements.There may be storm-water runoff requirements to consider such as construction of a retention pond basedon permitting.Accessibility to and from the site location with respect to access roads is also a key factor.The transmission or distribution lines may require additional ROW. There are benefits for substation designengineers to have more space to accommodate different layouts or configurations to reduce ROwrequirements from line routing.
4.1.1.4 Availability of adequate property and willing seller
The availability of adequately sized property with a willing seller can be an important aspect in siteselection. This may provide the utility with a partner in the community and may be a crucial aspect of theability to obtain permit approval to construct the substation on a preferred site. This will also provide acommunication point for developing community acceptance at any public hearings.
4.1.1.6 Community attitudes and perceptions
Consulting local community representatives helps develop a sense of their valuces and concerns, providingimportant information for the sitc selection team to consider. In addition this assists in developing a goodworking relationship with the community.