Ad
related to: single line diagram of substations
Search results
Results From The WOW.Com Content Network
The first step in planning a substation layout is the preparation of a one-line diagram, which shows in simplified form the switching and protection arrangement required, as well as the incoming supply lines and outgoing feeders or transmission lines. It is a usual practice by many electrical utilities to prepare one-line diagrams with ...
A substation one-line diagram, showing: busbars (coloured grey), transmission lines (black) circuit breakers (red), a generator (orange) and a transformer (blue) with a tertiary-connected reactor (green). Active and reactive power flows are annotated in purple: Source: Own work: Author: BillC
A typical one-line diagram with annotated power flows. Red boxes represent circuit breakers, grey lines represent three-phase bus and interconnecting conductors, the orange circle represents an electric generator, the green spiral is an inductor, and the three overlapping blue circles represent a double-wound transformer with a tertiary winding.
Most of the world uses 50 Hz 220 or 230 V single phase, or 400 V three-phase for residential and light industrial services. In this system, the primary distribution network supplies a few substations per area, and the 230 V / 400 V power from each substation is directly distributed to end users over a region of normally less than 1 km radius.
The file contains a single IED section, an optional communication section and an optional substation part which denotes the physical entities corresponding to the IED. System Specification Description (SSD) file: This file contains complete specification of a substation automation system including single line diagram for the substation and its ...
Step-down substation: these transformers lower the voltage coming from the transmission lines which can be used in industry or sent to a distribution substation. Distribution substation: these transform the voltage lower again for the distribution to end users. Aside from transformers, other major components or functions of substations include:
Frazer substation on the Philadelphia to Harrisburg Main Line Old substation remote control panel at Paoli interlocking tower A one-line diagram of the 1930 era substation at Bowie, MD The large substation at the Safe Harbor dam is one of the minority that steps-up 25 Hz power to 138 kV for long distance transmission.
These substations may consist of two to eight or more primary transformers connected to the same secondary bus to provide reliable facility power. Examples of such single facilities include airports, hospitals , major data processing centers (especially those using uninterruptible power supplies ), and sports arenas that regularly broadcast ...