铁路是能源开发的重要环节,又是一个大的能源用户。为此,本刊特约电力部科学技术委员会郭中兴工程师撰写此文,以供考虑铁路牵引动力现代化问题时参考。本文所介绍的各大区水力发电资源的分布和开发利用情况,还可以为计算在我国不同地区采用电力牵引时,由水、火电供电的加权平衡热效率提供依据。 The railway is an important part of energy development and it is also a large energy user. For this reason, Guo Zhongxing, an engineer of the Science and Technology Commission of the Ministry of Electricity, was invited to write this article for reference when considering the modernization of railway traction power. The distribution, exploitation and utilization of hydropower resources in each region as described in this paper can also provide a basis for calculating the weighted and balanced thermal efficiency of electricity supplied by water and thermal power when electric traction is used in different regions of China.