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引言

建国以来，地方小水电得到迅速的发展，从当初的孤立电站发展到今天的电站与地、县电网相结合的较为完善的发、供电体系，为当地的工农业发展和人民生活水平的提高做出了巨大贡献。但小水电发展到今天，不少电站已进入更新改造年限，就拿广西玉林市来说，有50%的电站已进入更新改造期，如何利用已有设施和水力资源，使这些电站重