电(dian)(dian)(dian)(dian)(dian)网(wang)(wang)(wang)(wang)(wang)(广(guang)义的电(dian)(dian)(dian)(dian)(dian)网(wang)(wang)(wang)(wang)(wang)即电(dian)(dian)(dian)(dian)(dian)力系(xi)统)作为(wei)现代(dai)(dai)工业文明的产物，经历了100多年的发(fa)展。纵观(guan)世界(jie)电(dian)(dian)(dian)(dian)(dian)网(wang)(wang)(wang)(wang)(wang)的发(fa)展历史(shi)和未(wei)来电(dian)(dian)(dian)(dian)(dian)网(wang)(wang)(wang)(wang)(wang)使命的变(bian)化(hua)(hua)，按(an)其不(bu)同(tong)阶(jie)段的主要技术经济特征区分(fen)(fen)，可(ke)(ke)分(fen)(fen)为(wei)三(san)代(dai)(dai)电(dian)(dian)(dian)(dian)(dian)网(wang)(wang)(wang)(wang)(wang)。第(di)一代(dai)(dai)电(dian)(dian)(dian)(dian)(dian)网(wang)(wang)(wang)(wang)(wang)是(shi)二(er)战(zhan)结(jie)束前(qian)的小电(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)、低电(dian)(dian)(dian)(dian)(dian)压、小电(dian)(dian)(dian)(dian)(dian)网(wang)(wang)(wang)(wang)(wang)，是(shi)电(dian)(dian)(dian)(dian)(dian)网(wang)(wang)(wang)(wang)(wang)的兴(xing)起阶(jie)段。第(di)二(er)代(dai)(dai)电(dian)(dian)(dian)(dian)(dian)网(wang)(wang)(wang)(wang)(wang)是(shi)二(er)战(zhan)后至上世纪(ji)末发(fa)展的大(da)机组、超高电(dian)(dian)(dian)(dian)(dian)压、大(da)规模(mo)互联(lian)电(dian)(dian)(dian)(dian)(dian)网(wang)(wang)(wang)(wang)(wang)，是(shi)电(dian)(dian)(dian)(dian)(dian)网(wang)(wang)(wang)(wang)(wang)的规模(mo)化(hua)(hua)发(fa)展阶(jie)段。第(di)二(er)代(dai)(dai)电(dian)(dian)(dian)(dian)(dian)网(wang)(wang)(wang)(wang)(wang)严重依赖化(hua)(hua)石能源(yuan)(yuan)，大(da)网(wang)(wang)(wang)(wang)(wang)的安(an)全(quan)(quan)风险(xian)难(nan)以基本消除，是(shi)不(bu)可(ke)(ke)持(chi)续(xu)的电(dian)(dian)(dian)(dian)(dian)网(wang)(wang)(wang)(wang)(wang)发(fa)展模(mo)式。未(wei)来电(dian)(dian)(dian)(dian)(dian)网(wang)(wang)(wang)(wang)(wang)就(jiu)是(shi)第(di)三(san)代(dai)(dai)电(dian)(dian)(dian)(dian)(dian)网(wang)(wang)(wang)(wang)(wang)。第(di)三(san)代(dai)(dai)电(dian)(dian)(dian)(dian)(dian)网(wang)(wang)(wang)(wang)(wang)是(shi)一、二(er)代(dai)(dai)电(dian)(dian)(dian)(dian)(dian)网(wang)(wang)(wang)(wang)(wang)在新能源(yuan)(yuan)革(ge)命条(tiao)件下(xia)的传承和发(fa)展，支持(chi)大(da)规模(mo)新能源(yuan)(yuan)电(dian)(dian)(dian)(dian)(dian)力，大(da)幅降低大(da)电(dian)(dian)(dian)(dian)(dian)网(wang)(wang)(wang)(wang)(wang)的安(an)全(quan)(quan)险(xian)，并广(guang)泛融合信息通(tong)信技术，是(shi)电(dian)(dian)(dian)(dian)(dian)网(wang)(wang)(wang)(wang)(wang)的可(ke)(ke)持(chi)续(xu)化(hua)(hua)、智能化(hua)(hua)发(fa)展阶(jie)段。