文档介绍：Page1ElectricalEnergyTransmission(电能输送),electricityisnotalwaysusedinthesameplacethatitisproduced,meaninglong-,estheneedtominimizethislosstoachievetwomaingoals::,whichcreatethreetypesofenergyloss:theJouleeffect,whereenergyislostasheatintheconductor(acopperwire,forexample);iclosses,icfield;thedielectriceffect,%whilethelossesintransformersrangebetween1%and2%(dependingonthetypeandratingsofthetransformer).So,savingjust1%ontheelectricalenergyproducedbyapowerplantof1000megawattsmeanstransmitting10MWmoretoconsumers,whichisfarfromnegligible:withthesameenergywecansupply1000--raisingprogrammers,,upiedrooms,orswitchingoffthetelevisionatnight(notjustputtingitintostandbymode),orsettingtaskssuchaslaundryfornon-,,superconductingtransformersandhightemperaturesuperconductorsarenewtechnologieswhichpromisemuchintermsofelectricalenergyefficiencyandatthesametime,:,电力的使用和生产常常不是在相同的地方,。.所以,随着需求的增长,就要使得这个损耗最小化,以达到两个主要目标:在减少资源消耗,同时为用户传送更多电能。至少有两种方式可以实现减少消耗量:更有效地传送电能以及改变用户的习惯。电能的传输和分配需要电缆和电力变压器,他们产生三种类型的能