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Spot Network Substation
In electricity distribution networks, spot network substations (network transformers) are used in interconnected distribution networks. They have the secondary network (also called a grid network) with all supply transformers bussed together on the secondary side at one location. Spot networks are considered the most reliable and most flexible arrangement of connecting power to all types of loads. Switching can be done without interrupting the power to the loads. Description Electricity distribution networks are typically of two types, radial or interconnected. A radial network arranges the station and branches like a tree with no connection to any other supply. This is typical of long rural lines with isolated load areas. In general, the radial distribution network has more power failures than the interconnected distribution networks. In a secondary network the transformers are distributed across an area (e.g. in streets) and have multiple supplies. The transformers are wire ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spot Network
Spot or SPOT may refer to: Places * Spot, North Carolina, a community in the United States * The Spot, New South Wales, a locality in Sydney, Australia * South Pole Traverse, sometimes called the South Pole Overland Traverse People * Spot Collins (1922-1996), American football player and coach * Jack Comer (1912–1996), Polish-born English gangster nicknamed "Spot" * Jerry Chamberlain (known as "Spot"), the guitarist for the rock group the Swirling Eddies * Scott Draves (known as "Spot"), digital artist and VJ * Spot (producer), Glenn Michael Lockett (1951–2023), house producer and engineer for the label SST Records * Spot (rapper) (born 1987), American rapper * Moondog Spot, a ring name for professional wrestler Larry Booker Advertising * Radio spot, an over-the-air advertisement * TV spot, a televised advertisement * Underwriting spot, an announcement made on public broadcasting outlets, especially in the United States, in exchange for funding Animals * Spot, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electricity Distribution
Electric power distribution is the final stage in the delivery of electricity. Electricity is carried from the transmission system to individual consumers. Distribution substations connect to the transmission system and lower the transmission voltage to medium voltage ranging between and with the use of transformers. ''Primary'' distribution lines carry this medium voltage power to distribution transformers located near the customer's premises. Distribution transformers again lower the voltage to the utilization voltage used by lighting, industrial equipment and household appliances. Often several customers are supplied from one transformer through ''secondary'' distribution lines. Commercial and residential customers are connected to the secondary distribution lines through service drops. Customers demanding a much larger amount of power may be connected directly to the primary distribution level or the subtransmission level. The transition from transmission to distrib ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transformer
In electrical engineering, a transformer is a passive component that transfers electrical energy from one electrical circuit to another circuit, or multiple Electrical network, circuits. A varying current in any coil of the transformer produces a varying magnetic flux in the transformer's core, which induces a varying electromotive force, electromotive force (EMF) across any other coils wound around the same core. Electrical energy can be transferred between separate coils without a metallic (conductive) connection between the two circuits. Faraday's law of induction, discovered in 1831, describes the induced voltage effect in any coil due to a changing magnetic flux encircled by the coil. Transformers are used to change Alternating current, AC voltage levels, such transformers being termed step-up or step-down type to increase or decrease voltage level, respectively. Transformers can also be used to provide galvanic isolation between circuits as well as to couple stages of signa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Secondary Network
A low-voltage network or secondary network is a part of electric power distribution which carries electric energy from distribution transformers to electricity meters of end customers. Secondary networks are operated at a low voltage level, which is typically equal to the mains voltage of electric appliances. Most modern secondary networks are operated at AC rated voltage of 100–127 or 220–240 volts, at the frequency of 50 or 60 hertz (see mains electricity by country). Operating voltage, required number of phases (three-phase or single-phase) and required reliability dictate topology and configuration of the network. The simplest form are radial service drop lines from the transformer to the customer premises. Low-voltage radial feeders supply multiple customers. For increased reliability, so-called ''spot networks'' and ''grid networks'' provide supply of customers from multiple distribution transformers and supply paths. Electric wiring can be realized by overh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Power Outage
A power outage, also called a blackout, a power failure, a power blackout, a power loss, a power cut, or a power out is the complete loss of the electrical power network supply to an end user. There are many causes of power failures in an electricity network. Examples of these causes include faults at power stations, damage to Electric power transmission, electric transmission lines, Electrical substation, substations or other parts of the electricity distribution, distribution system, a short circuit, Cascading failure#Cascading failure in power transmission, cascading failure, fuse (electrical), fuse or circuit breaker operation. Power failures are particularly critical at sites where the environment and public safety are at risk. Institutions such as hospitals, Sewage Treatment, sewage treatment plants, and mining, mines will usually have backup power sources such as emergency power system, standby generators, which will automatically start up when electrical power is lost ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Network Protector
A network protector is a type of electric protective device used in electricity distribution systems. The network protector automatically disconnect its associated distribution transformer from the secondary network when the power starts flowing in reverse direction. Network protectors are used on both spot networks and grid networks. The secondary grid system improves continuity of service for customers, since multiple sources are available to supply the load; a fault with any one supply is automatically isolated by the network protector and does not interrupt service from the other sources. Secondary grids are often used in downtown areas of cities where there are many customers in a small area. Operation Typically the network protector is set to close when the voltage difference and phase angle are such that the transformer will supply power to the secondary grid, and is set to open when the secondary grid would back-feed through the transformer and supply power to the prima ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Utility Company
A public utility company (usually just utility) is an organization that maintains the infrastructure for a public service (often also providing a service using that infrastructure). Public utilities are subject to forms of public control and regulation ranging from local community-based groups to statewide government monopolies. Public utilities are meant to supply goods and services that are considered essential; water, gas, electricity, telephone, waste disposal, and other communication systems represent much of the public utility market. The transmission lines used in the transportation of electricity, or natural gas pipelines, have natural monopoly characteristics. A monopoly can occur when it finds the best way to minimize its costs through economies of scale to the point where other companies cannot compete with it. For example, if many companies are already offering electricity, the additional installation of a power plant will only disadvantage the consumer as prices ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hospitals
A hospital is a healthcare institution providing patient treatment with specialized health science and auxiliary healthcare staff and medical equipment. The best-known type of hospital is the general hospital, which typically has an emergency department to treat urgent health problems ranging from fire and accident victims to a sudden illness. A district hospital typically is the major health care facility in its region, with many beds for intensive care and additional beds for patients who need long-term care. Specialized hospitals include trauma centers, rehabilitation hospitals, children's hospitals, geriatric hospitals, and hospitals for specific medical needs, such as psychiatric hospitals for psychiatric treatment and other disease-specific categories. Specialized hospitals can help reduce health care costs compared to general hospitals. Hospitals are classified as general, specialty, or government depending on the sources of income received. A teaching hospital cam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uninterruptible Power Supply
An uninterruptible power supply (UPS) or uninterruptible power source is a type of continual power system that provides automated backup electric power to a electrical load, load when the input power source or mains electricity, mains power fails. A UPS differs from a traditional auxiliary power, auxiliary/emergency power system or standby generator in that it will provide near-instantaneous protection from input power interruptions by switching to energy stored in battery packs, supercapacitors or flywheels. The on-battery run-times of most UPSs are relatively short (only a few minutes) but sufficient to "buy time" for initiating a standby power source or properly shutting down the protected equipment. Almost all UPSs also contain integrated surge protection to shield the output appliances from voltage spikes. A UPS is typically used to protect hardware such as computers, hospital equipment, data centers, telecommunications equipment or other electrical equipment where an unexp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Memphis, Tennessee
Memphis is a city in Shelby County, Tennessee, United States, and its county seat. Situated along the Mississippi River, it had a population of 633,104 at the 2020 United States census, 2020 census, making it the List of municipalities in Tennessee, second-most populous city in Tennessee, the fifth-most populous in the Southeastern United States, Southeast, and the List of United States cities by population, 28th-most populous in the nation. Memphis is the largest city proper on the Mississippi River and anchors the Memphis metropolitan area that includes parts of Arkansas and Mississippi, the Metropolitan statistical area, 45th-most populous metropolitan area in the U.S. with 1.34 million residents. European exploration of the area began with Spanish conquistador Hernando de Soto in 1541. Located on the high Chickasaw Bluffs, the site offered natural protection from Mississippi River flooding and became a contested location in the colonial era. Modern Memphis was founded in 181 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FedExForum
FedExForum is a multi-purpose indoor arena located in Downtown Memphis, Tennessee, Downtown Memphis, Tennessee. It is the home of the Memphis Grizzlies of the National Basketball Association (NBA) and the NCAA Division I Memphis Tigers men's basketball, men's basketball program of the University of Memphis, both of whom previously played home games at the Memphis Pyramid. The venue also has the capability of hosting ice hockey games, concerts, and family shows. The arena officially opened in September 2004 after much debate and also a 2003 Mid-south derecho, derecho wind storm on July 22, 2003, that nearly brought down the Crane (machine), cranes that were building it near the famed Beale Street. It was built at a cost of US$250 million and is owned by the City of Memphis; naming rights were purchased by one of Memphis's best-known businesses, FedEx, for $92 million. FedExForum was financed using $250 million of public bonds, which were issued by the Memphis Public Building Auth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toronto Pearson International Airport
Toronto Pearson International Airport is an international airport located in Mississauga, Ontario, Canada. It is the main airport serving Toronto, its metropolitan area, and the surrounding region known as the Golden Horseshoe. Pearson is the largest and busiest airport in Canada, handling 46.8 million passengers in 2024. It is named in honour of Lester B. Pearson (1897–1972), the 14th Prime Minister of Canada and 1957 Nobel Peace Prize laureate for his humanitarian work in peacekeeping. Pearson International Airport is situated northwest of Downtown Toronto in the adjacent city of Mississauga, with a small portion of the airfield extending into Toronto's western district of Etobicoke. It has five runways and two passenger terminals along with numerous cargo, maintenance, and aerospace production facilities on a site that covers . Toronto Pearson is the primary global hub for Air Canada. It also serves as a hub for Porter Airlines and WestJet, as a focus city for Ai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
