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根据西北地区水火电资源、负荷分布特点及全国“西电东送”的统一战略，西北地区发展高一级电压等级的输电网络已是大势所趋。通过各种可选方案的比较，西北电网高一级电压等级采用750千伏，在技术上是可行的，经济上是合理的，设备制造与供应也不成问题，可以说发展建设的时机已
According to the unified strategy of hydropower resources, load distribution characteristics in the northwest region and the country’s “West-to-East Electricity Transmission,” the development of a transmission network with a higher voltage level in the Northwest China is a general trend. Through the comparison of various alternatives, the use of 750 kV in the high-level voltage level of the Northwest Power Grid is technically feasible and economically reasonable. Equipment manufacturing and supply are not a problem. It can be said that the timing of development has been