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为充分发挥西北地区水电资源优势、用好已建和在建的黄河上游水电站群,经初步论证,利用西北水电的重复容量送华北调峰,在汛期兼送部分季节性电能不仅是必要的,在经济上也是十分有利的.送电华北第一回750千伏输电线初步设想自兰州皋兰至河北定县、长1200公里、输变电投资9.0亿元,投入时间拟在1990年较为适宜;第二回750千伏线路可考虑1995～1997年投入.每回线路最大输送功率为150万千瓦.
In order to give full play to the advantages of hydropower resources in Northwest China and make good use of the hydropower stations in the upper reaches of the Yellow River that have been built and under construction, preliminary proof is made that using the repeated capacity of Northwest Hydropower to send peak loads in North China, it is not only necessary to send some seasonal electric energy in flood season, Is also very favorable in economy.Secondary transmission of 750 kV power transmission lines in North China initially envisaged from Gaolan in Lanzhou to Ding County in Hebei Province, 1200 km long, transmission and transformation investment of 900000000 yuan, the investment time to be more appropriate in 1990; The second 750 kV line can be considered from 1995 to 1997. Each line is the maximum transmission power of 1.5 million kilowatts.