树状分枝一管多机非对称复杂水力-机械系统安全与稳定运行措施研究

Research on measures and facilities to guarantee safe and stable operation of hydropower station with complicated branch-shape multiple units-to-one tunnel asymmetric hydro-mechanical system

广西长滩河水利枢纽于1977年动工兴建,经过多年续建形成树状分枝一管四机非对称复杂水力—机械系统,但系统运行一直缺乏调节保证计算数据支持。从2006年开始,对该工程首次开展过渡过程仿真计算,根据计算结果分析电站运行存在的安全隐患,研究提出确保电站安全与稳定运行的措施。2012年,各项措施实施改造完毕,至今电站运行情况良好。

The construction of Changtanhe Hydraulic Complex in Guangxi began in 1977. After many years of continued construction, a complicated branch-shape four units-to-one tunnel asymmetric hydro-mechanical system formed, but this project had been operating without guide of regulation guarantee calculation data. Software was adopted to conduct simulation calculation of transient process for the first time since 2006. The hidden danger for oper- ation was analyzed in accordance with the results of calculation, based on which the measures to guarantee safe and stable operation were studied and put forward. The hydropower station has been operating well since all additional facilities and modification required were completed in 2012.