Electric transmission lines | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-01-06

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Electric_power_transmission


00:01:44 1 System
00:04:50 2 Overhead transmission
00:07:48 3 Underground transmission
00:09:49 4 History
00:17:52 5 Bulk power transmission
00:24:38 5.1 Grid input
00:26:16 5.2 Losses
00:31:33 5.3 Transposition
00:33:13 5.4 Subtransmission
00:35:31 5.5 Transmission grid exit
00:36:15 6 Advantage of high-voltage power transmission
00:42:44 7 Modeling and the transmission matrix
00:45:08 7.1 Lossless line
00:46:02 7.2 Short line
00:46:26 7.3 Medium line
00:46:37 7.4 Long line
00:47:21 8 High-voltage direct current
00:48:08 9 Capacity
00:48:48 10 Control
00:49:36 10.1 Load balancing
00:50:28 10.2 Failure protection
00:54:02 11 Communications
00:57:18 12 Electricity market reform
00:57:51 13 Cost of electric power transmission
01:01:16 14 Merchant transmission
01:01:56 15 Health concerns
01:04:24 16 Policy by country
01:06:23 16.1 United States
01:07:05 17 Special transmission
01:09:07 17.1 Grids for railways
01:14:53 17.2 Superconducting cables
01:15:03 17.3 Single wire earth return
01:19:33 17.4 Wireless power transmission
01:19:43 18 Security of control systems
01:20:32 19 Records
01:21:56 20 See also
01:22:39 21 References
01:23:58 22 Further reading
01:24:39 Records



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SUMMARY
=======
Electric power transmission is the bulk movement of electrical energy from a generating site, such as a power plant, to an electrical substation. The interconnected  lines which facilitate this movement are known as a transmission network. This is distinct from the local wiring between high-voltage substations and customers, which is typically referred to as electric power distribution. The combined transmission and distribution network is known as the "power grid" in North America, or just "the grid". In the United Kingdom, India, Malaysia and New Zealand, the network is known as the "National Grid".
A  wide area synchronous grid, also known as an "interconnection" in North America, directly connects a large number of generators delivering AC power with the same relative frequency to a large number of consumers. For example, there are four major interconnections in North America (the Western Interconnection, the Eastern Interconnection, the Quebec Interconnection and the Electric Reliability Council of Texas (ERCOT) grid). In Europe one large grid connects most of continental Europe.
Historically, transmission and distribution lines were owned by the same company, but starting in the 1990s, many countries have liberalized the regulation of the electricity market in ways that have led to the separation of the electricity transmission business from the distribution business.