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A switching station is a substation without transformers and operating only at a single voltage level. Switching stations are sometimes used as collector and distribution stations. Sometimes they are used for switching the current to back-up lines or for parallelizing circuits in case of failure.
The term switching station may refer to: an electrical substation, with only one voltage level, whose only function are switching actions. a battery switch station, such as the ones used by the Better Place network. a railroad switching station. a telephone switching station
A substation is “a high-voltage electric system facility,” OSHA says, where power — specifically, voltages — becomes suitable for distribution and supply to customers.
The primary North American document that deals with outdoor high-voltage transformer fire barriers is NFPA 850. [1] NFPA 850 outlines that outdoor oil-insulated transformers should be separated from adjacent structures and from each other by firewalls, spatial separation, or other approved means for the purpose of limiting the damage and potential spread of fire from a transformer failure.
High-voltage switching can be used to handle more cases, e.g., working transformer but faulty feeder or the reverse. Network protectors , (reverse current relays), are used to detect any open circuits that are letting the electrical current flow back towards its source.
Line reactors are often used to compensate line capacitance, mitigate voltage transients due to switching, and to limit fault currents, especially in case of underground transmission lines. A bus reactor and a line reactor are interchangeable as long as they are rated for the same voltage which is dependent upon substation's physical layout ...
Four electricity substations in the Tacoma, Washington, area were attacked Sunday, affecting thousands of customers, authorities said.
Substation near Yellowknife, in the Northwest Territories, Canada. Distribution networks are divided into two types, radial or network. [10] A radial system is arranged like a tree where each customer has one source of supply. A network system has multiple sources of supply operating in parallel. Spot networks are used for concentrated loads.