by Israel Program for Scientific Translations; [available from the U.S. Dept. of Commerce, Clearinghouse for Federal Scientific and Technical Information, Springfield, Va.] in Jerusalem .
Written in English
|Statement||O. V. Olʹshevskii, editor. Translated from Russian [and edited by G. D. Myers].|
|Contributions||Olʹshevskiĭ, O. V., ed.|
|LC Classifications||TK3091 .P3213|
|The Physical Object|
|Pagination||ii, 110 p.|
|Number of Pages||110|
|LC Control Number||72607358|
Electric power transmission is the bulk movement of electrical energy from a generating site, such as a power plant, to an electrical interconnected lines which facilitate this movement are known as a transmission is distinct from the local wiring between high-voltage substations and customers, which is typically referred to as electric power distribution. Here we have an example of long-distance power transmission, showing the value of using high generator at left generates V, and a step-up transformer converts it to about kilovolts. This greatly reduces the current, and thereby the resistance losses, over the transmission wires (represented by the ohm resistors). The first point to make is: We don't always use AC. There is such a thing as high voltage DC for long-distance power transmission. However its use was rare until the last few decades, when relatively efficient DC-to-AC conversion techniques were developed. From the point of view of transmission performance, multistage modulation is beneficial to improve the spectrum efficiency, but it is not conducive to long distance transmission. The next generation of the main modulation technology for the long distance optical transmission system of .
Long distance transmission of electrical power is one of the major challenges of the electrical age. The goals which engineers have been working towards have remained the same despite many other things changing over the years. 1. Efficiency - transport electric power over distance with minimal losses 2. Long-Distance Bulk Power Transmission Generator Outlet Transmission More power on fewer lines Improved stability Lower installed cost Reduced losses Double circuit (bipolar line) Reduced ROW Two lines vs. one – IPP, CU, Square Butte Interconnections Firm capacity Bypass congestion Avoid loop flow No limit due to parallel paths Interconnect diverse regions. In some parts of the grid in the United States, electricity is transmitted at up to , volts. The need for a high transmission voltage occurs when a large amount of power has to be transmitted over a long distance. Why High Voltage. The primary reason that power is transmitted at high voltages is . Electrical power transmission has replaced mechanical power transmission in all but the very shortest distances. From the 16th century through the industrial revolution to the end of the 19th century mechanical power transmission was the norm. The oldest long-distance power transmission technology involved systems of push-rods or jerker lines (stängenkunst or feldstängen) connecting.
See more videos at: In this video, we look at how power is transmitted long distances with minimal power loss. To increase the power to be transmitted, this power angle δ may increase up to 90 degrees. Increasing slightly further, the line becomes unstable and lose synchronism. It is a good practice to operate the lines with sending and receiving ends phase differnce angle (power angle) less than 30 degrees. Most of the answers here focus on the advantage, which is the higher the voltage, the more power you can transmit using the same type of conductor. P=IV. For utilities serving large loads, high voltage transmission is an absolute necessity, since. Transmission Line – A line that carries electricity at voltages of 69kV or greater and is used to transmit electric power over relatively long distances, usually from a central generating station to main substations. Transmission Structures – Used to keep high-voltage conductors (power lines) separated from their surroundings and from each File Size: 2MB.