76
E.
There is an inherent problem about electrical energy, i.e. it is not
storable, except in batteries. Therefore, it has to be transmitted and distributed
to end users - homes, industry or business. After coming off the transmission
grid, electricity is stepped down to the distribution grid. This conversion from
transmission to distribution occurs in a power substation. In order to step down
the high voltages used for transmission, power substations use transformers
which step down transmission voltages to distribution voltages, they have a
bus that can split the distribution power off in multiple directions, or they have
circuit breakers and switches which disconnect the substation from the
transmission grid when necessary.
Reorder the different stages in the distribution system
a)
Transmission lines carry high-voltage electricity to different
substations.
b)
Electricity leaves the power plant.
c)
Electricity is stepped down by transformers.
d)
Current at lower voltages is transmitted to homes and offices.
e)
The voltage is increased at a step-up station.
f)
Power levels are lowered by small transformers mounted on poles
Give a title to each paragraph. Comment on them. Try to use the
terms whenever it is possible
Look through the text again. Underline all examples of passive verb
forms and participles. Translate them into Russian
Read the text again and answer the questions using professional
vocabulary and complete sentences
1. What does power engineering deal with?
2. Where is electric power generated?
3. What is the main device in power stations?
4. What energy sources are used to turn generators?
5. What are step up and step down transformers used for?
6. What kind of transmission lines is there and what is the difference
between them?
7.
Compare transmission and distribution lines.
8. What is the inherent problem about electricity?
9. What do power substations use to step down the high voltages used for
transmission?
