{"id":726,"date":"2026-08-27T12:27:08","date_gmt":"2026-08-27T12:27:08","guid":{"rendered":"https:\/\/baarda.ch\/?p=726"},"modified":"2026-08-27T12:27:08","modified_gmt":"2026-08-27T12:27:08","slug":"wikipedia-is-electricity-important","status":"publish","type":"post","link":"https:\/\/baarda.ch\/?p=726","title":{"rendered":"Wikipedia. Is electricity important?"},"content":{"rendered":"\n

Electric power transmission<\/strong> is the bulk movement of electrical energy<\/a> from a generating<\/a> site, such as a power plant<\/a>, to an electrical substation<\/a>. A long conductor used to facilitate such movement is called a transmission line<\/em>. The interconnected transmission lines form a transmission network<\/em>. In the power industry, electric power transmission is distinct from the local wiring between high-voltage substations and customers, which is typically referred to as electric power distribution<\/a>, even though power distribution<\/em> is semantically a type of power transmission<\/em> in common parlance. The combined transmission and distribution network is part of electricity delivery<\/a>, known as the electrical grid<\/a>.[2]<\/a><\/sup><\/p>\n\n\n\n

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Picture by Ellywa<\/a><\/p>\n\n\n\n

Transmission lines transmit either alternating current<\/a> (AC) or direct current<\/a> (DC). To increase the efficiency of long-distance electric power transmission, the voltage<\/a> is often increased for transmission, then reduced for local distribution. This is because higher voltages corresponds to lower currents<\/a> and lower losses caused by such currents. The AC voltage level is often changed with transformers<\/a>.<\/p>\n\n\n\n

A wide area synchronous grid<\/a>, known as an interconnection<\/em> in North America, directly connects generators delivering AC power with the same relative frequency<\/em> to many consumers. North America has four major interconnections: Western<\/a>, Eastern<\/a>, Quebec<\/a> and Texas<\/a>. One grid connects most of continental Europe<\/a>.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

https:\/\/commons.wikimedia.org\/wiki\/User:Varistor60<\/a><\/p>\n\n\n\n

Historically, transmission and distribution lines were often owned by the same company, but starting in the 1990s, many countries liberalized<\/a> the regulation of the electricity market<\/a> in ways that led to separate companies handling transmission and distribution.[3]<\/a><\/sup><\/p>\n\n\n\n

Systems<\/h2>\n\n\n\n
\"\"\/<\/a>
A diagram of an electric power system. The transmission system is in blue.<\/figcaption><\/figure>\n\n\n\n

Most North American transmission lines are high-voltage three-phase<\/a> AC, although single phase<\/a> AC is sometimes used in railway electrification systems<\/a>. DC technology is used for greater efficiency over longer distances, typically hundreds of miles. High-voltage direct current<\/a> (HVDC) technology is also used in submarine power cables<\/a> (typically longer than 30 miles (50 km)), and in the interchange of power between grids that are not mutually synchronized. HVDC links stabilize power distribution networks where sudden new loads, or blackouts, in one part of a network might otherwise result in synchronization problems and cascading failures<\/a>.[4]<\/a><\/sup><\/p>\n","protected":false},"excerpt":{"rendered":"

Electric power transmission is the bulk movement of electrical energy from a generating site, such as a power plant, to an electrical substation. A long conductor used to facilitate such movement is called a transmission line. The interconnected transmission lines form a transmission network. In the power industry, electric power transmission is distinct from the … <\/p>\n

«Wikipedia. Is electricity important?»<\/span> weiterlesen<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-726","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/baarda.ch\/index.php?rest_route=\/wp\/v2\/posts\/726","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/baarda.ch\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/baarda.ch\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/baarda.ch\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/baarda.ch\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=726"}],"version-history":[{"count":1,"href":"https:\/\/baarda.ch\/index.php?rest_route=\/wp\/v2\/posts\/726\/revisions"}],"predecessor-version":[{"id":729,"href":"https:\/\/baarda.ch\/index.php?rest_route=\/wp\/v2\/posts\/726\/revisions\/729"}],"wp:attachment":[{"href":"https:\/\/baarda.ch\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=726"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/baarda.ch\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=726"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/baarda.ch\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=726"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}