在三峡电力送出重要通道±500千伏葛南线长江大跨越塔上，运行人员在进行线路巡视维护（12月4日摄）。当日，锦屏-苏南 800千伏特高压直流工程（以下简称锦苏工程）全面完成系统调试和试运行，正式投入商业运行。锦苏工程是国家电网公司继特高压交流和直流示范工程成功之后，建成投运的第三个特高压输电工程，是目前世界上输送容量最大、送电距离最远、电压等级最高的直流输电工程，代表了当前世界直流输电技术的最高水平。工程承担着雅砻江流域官地、锦屏一、二级水电站和四川丰水期富余水电的送出任务。工程途经四川、云南、重庆、湖南、湖北、浙江、安徽、江苏八省市，线路全长2059公里，额定电压±800千伏，额定输送功率720万千瓦，总投资220亿元。工程自6月13日低端直流调试送电至11月28日已累计送电35亿千瓦时，有力保证了官地、锦屏电站水电机组和汛期四川富余水电的及时顺利外送，有效缓解了今年江苏和华东地区迎峰度夏期间用电紧张局面。工程全面投运后，每年可向华东地区输送电量约360亿千瓦时，相当于节约原煤1680万吨，并减少排放二氧化碳3240万吨，对于解决四川电力“丰余枯缺”的结构性矛盾，满足东部地区经济社会持续发展用电需求，缓解日益严峻的生态环境问题，具有重大的综合效益。新华社发（李方宇 摄）     In the three gorges power send out important channel + 500 kv Gregory forms across the Yangtze river big tower,Staff in line tour maintenance(Taken on December 4,).the,Silk screen - sunan 800000 v dc high voltage engineering(Hereinafter referred to as "jin Sue engineering)Completed system debugging and commissioning,Put into commercial operation.Jin Sue engineering is the national power grid company following the uhv ac and dc demonstration project after success,Put in the third uhv transmission project,Is the world largest conveying capacity/Feed distance as far as/The highest level of voltage dc transmission project,On behalf of the world's dc transmission technology of the highest level.Responsible for project built GuanDe basin/Silk screen a/Secondary hydropower station and sichuan wet season surplus water and electricity off task.Engineering through sichuan/yunnan/chongqing/hunan/hubei/zhejiang/anhui/Jiangsu eight provinces and cities,Line (2059 km),Rated voltage + 800 kv,Rated feeding power 7.2 million kw,The total investment capital is 22 billion yuan.Engineering since June 13 low dc debugging sending to November, and has accumulated sending 3.5 billion KWH,The GuanDe powerful guarantee/Silk screen station hydropower generating units and the flood season surplus sichuan hydropower timely smooth delivery,Effectively relieve this year jiangsu and the east China area during summer peaks electricity tension.Engineering overall effect,Every year to the east China area delivery quantity about 36 billion KWH,Saving the equivalent of 16.8 million tons of coal,And to reduce emissions of carbon dioxide 32.4 million tons,To solve the sichuan electric power"Over abundance is lack of"Structural contradictions,The eastern region to meet the needs of economic and social sustainable development,Alleviate the increasingly serious ecological environment problems,Has the significant comprehensive benefits.The xinhua news agency hair(LiFangYu perturbation)

    锦苏工程送出端——±800千伏锦屏换流站全貌（12月2日摄）。新华社发（李方宇 摄）     Jin Sue engineering send end - + 800 kv silk screen converter panorama(On December 2nd shot).The xinhua news agency hair(LiFangYu perturbation)

    在锦苏特高压锦屏送出工程全线贯通前，施工人员在作业（12月1日摄）。新华社发（李方宇 摄）     In the jin surt high silk screen send out all before through engineering,Construction personnel in the operation(December 1st shot).The xinhua news agency hair(LiFangYu perturbation)

    在工程西昌地区裕隆段，两名工程人员在进行线路巡查（12月1日摄）。新华社发（李方宇 摄）     In engineering xichang yulon section,Two engineering personnel in the line search(December 1st shot).The xinhua news agency hair(LiFangYu perturbation)

    在锦苏特高压工程安徽省池州市东至县山区线路段，工作人员行走在崎岖的山路上巡线（12月4日摄）。新华社发（李方宇 摄）     In the jin surt high voltage engineering chizhou anhui province east to county mountain line segment,Staff to walk in the rugged mountain road patrol(Taken on December 4,).The xinhua news agency hair(LiFangYu perturbation)