传输与分布
Transmission and distribution are terms used commonly in connection with electricity. It is not just production that is important but how efficiently it is transmitted from the power plant to power sub stations and then finally to end consumers that makes up the entire system of generation to consumption. People commonly confuse between transmission and distribution and believe them to be synonyms but these terms are as different as chalk and cheese. This article will highlight the features of both transmission and distribution to make the concepts clear to the readers.
Transmission
传播是指携带避署的过程ctricity that is produced by turbines in a power plant (whether thermal or hydro electric) to power sub stations that are located near populations. It is kept in mind to locate a sub station at a place that is strategically located so as to be able to supply electricity to as large a population as possible so that less money is spent in making sub stations. Thus transmission lines provide a medium for electricity being produced from power plants to near areas where it is to be utilized by the consumers. Transmission lines carry electricity at a very high voltage which is around 11000 volts and it is usually three phase power transmission.
Distribution
Distribution begins after electricity lands at sub stations that are created near populations. It is the process of carrying high voltage electricity to end consumers converting it into 220V to make it safe and efficient for use in homes, offices and industries. The conversion of high voltage into a voltage that can be used in homes is done through transformers. Also the lines carrying this electricity to consumers are thin in comparison to transmission lines. Electricity is supplied in single phase to end consumers so some get it from one phase coming from the power plant while others may be getting it from another phase coming from the power plant.
Difference Between Transmission and Distribution •传输和分配是指在发电厂产生的电力运动后,但传输是电力从电厂到人口附近的电力台上的移动 • Transmission is done in three phase whereas distribution is done in single phase • Transmission lines carry electricity at a very high voltage (11000V) whereas distribution lines carry it at low and safe levels (220V) • Electricity if brought down from high to low voltage using transformers |
Moh Mkb说
thanx
John Dow说
That’s a bit wrong.
Transmission lines carry energy from power stations to substations at VERY high voltages.
Distribution lines carry energy from substations to neighborhoods at HIGH voltages.
In more detail, using our local system as an example:
电站燃烧天然气以驱动蒸汽轮机,该蒸汽轮机驱动发电机,从而输出电能。大型变压器的台阶会产生电能,直至非常高的电压,有时超过500,000伏。
Transmission lines carry that very high voltage over very long distances, even many hundreds of miles. These lines are on very high towers to keep everyone and everything away from the very high voltages on them.
Transmission lines carry that energy to numerous substations, where large transformers step the very high voltage down again to high voltages that are more suitable and safer for use NEAR, but not IN, buildings. Here, our substation steps 640,000 volts down to 14,400 volts.
Distribution lines carry that 14,400 volt energy down streets to smaller transformers that are near buildings. In our neighborhood, one such transformer serves my house and the house next door, and it sits on the ground at the common corner of our two lots. It steps the 14,400 volts suppled to it down to 240 volts, which is then supplied to these two houses.
carlos说
who of the two gets paid better do u know
carlos说
谁得到更好的传输巡线员或分销巡线员