Презентация на тему Distribution of electricity

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2. KeywordsPower Distribution – распределение электроэнергииGenerators - генераторыTransformer
3. Most electrical power originates from generators capable of generating many thousands of watts.
4. A schematic diagram of the power distribution
5. Electric power distribution from generating plant to low voltage (normally 115/230 v) distribution system.
6. After generation at 2.3 - 13.8 kv
7. This high voltage electricity may travel for
8. Along the way there may be step-down transformers that lead to secondary transmission lines.
9. As the lines near residential areas, communities,
10. The service wires at 115/230 v then
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KeywordsPower Distribution – распределение электроэнергииGenerators - генераторыTransformer – трансформаторHigher voltage – высокое напряжениеTransmission lines – линии передачSubstation - подстанция

Most electrical power originates from generators capable of generating many thousands of watts.

A schematic diagram of the power distribution from the generator to the

Electric power distribution from generating plant to low voltage (normally 115/230 v) distribution system.

After generation at 2.3 - 13.8 kv the electricity travels to a

This high voltage electricity may travel for many miles. With the higher

Along the way there may be step-down transformers that lead to secondary transmission lines.

As the lines near residential areas, communities, or industries there generally is

The service wires at 115/230 v then go to a meter and

Answer the following question:1. What is a main? 2. What is a

Слайды презентации

Слайд 2 Keywords
Power Distribution – распределение электроэнергии
Generators - генераторы
Transformer –

KeywordsPower Distribution – распределение электроэнергииGenerators - генераторыTransformer – трансформаторHigher voltage –

трансформатор
Higher voltage – высокое напряжение
Transmission lines – линии

передач
Substation - подстанция

Слайд 3 Most electrical power originates from generators capable

of generating many thousands of watts.

Слайд 4 A schematic diagram of the power distribution from

A schematic diagram of the power distribution from the generator to

the generator to the consumer is illustrated in the

figure below.

Слайд 5 Electric power distribution from generating plant to low

voltage (normally 115/230 v) distribution system.

Слайд 6 After generation at 2.3 - 13.8 kv the

After generation at 2.3 - 13.8 kv the electricity travels to

electricity travels to a transformer where the voltage is

stepped up to several thousand volts; in come cases it approaches one million volts.

Слайд 7 This high voltage electricity may travel for many

This high voltage electricity may travel for many miles. With the

miles. With the higher voltage, a lower current is

developed, causing lower I2R losses. Thus, the losses due to resistance heating are reduced greatly in night voltage transmission lines.

Слайд 8 Along the way there may be step-down transformers

that lead to secondary transmission lines.

Слайд 9 As the lines near residential areas, communities, or

As the lines near residential areas, communities, or industries there generally

industries there generally is a substation located in which

there are further step-down transformers. From these substations are primary mains that may carry only a few thousand volts, e.g 2 300. Then from the primary main the electricity may be taken off at distribution transformers to secondary mains that carry 115/230 v for most residences, farm customers, and small business and industries.

Слайд 10 The service wires at 115/230 v then go

The service wires at 115/230 v then go to a meter

to a meter and hence into the residential or

farmstead electrical distribution system. Some higher voltage systems, such as 220/440 v are used for small business or processing and manufacturing plants.