梯级水电站实时发电补偿调度风险分析  

A Risk Analysis on the Real-time Compensation Operation of Cascade Hydropower Stations

作　　者：钟平安[1] 蔡杰[1] 李远生[2] 曹静[1] 

机构地区：[1]河海大学水文水资源学院,江苏省南京市210098 [2]安砂水力发电厂,福建省永安市366000

出　　处：《电力系统自动化》2008年第7期30-33,共4页Automation of Electric Power Systems

摘　　要：在由"龙头"水库与若干日调节或无调节水电站组成的梯级水电中,枯水期末和汛期洪水间隔阶段,"龙头"水库根据下游电站区间来水情况,在正常发电流量外实施小流量泄流补偿,不仅可以提高"龙头"水库的防洪安全性、减少无益弃水,而且可以给下游电站提供更多的发电水量,改善机组的运行效率。文中建立了梯级水电站实时发电补偿调度风险分析模式,提出了梯级水电站实时补偿增益的计算方法、"龙头"水库不同补偿方案下风险的定量化方法以及基于期望增益最大的补偿方案选择方法。实例研究表明所提出的方法是合理、有效的,具有较好的辅助决策价值。In the cascade hydropower stations composed of the leading reservoir, some daily regulated or unregulated hydropower stations, the leading reservoir may release a small flow of water for compensating operation besides normal generating flow according to the state of the intermediate inflow of downstream hydropower stations during the intervals between the dry season and flood season. This method can enhance the safety of the leading reservoir＇s flood control and reduce the discharge loss, providing more water for power generation to the downstream hydropower stations and improving the operating efficiency of the generator sets. A risk analyzing model for real-time compensating operation for cascade hydropower stations is developed in addition to a method for calculating the gain of real-time compensating operation. A risk quantifying. approach to different compensation schemes for the leading reservoir is put forward, and a method for choosing the compensation scheme based on the maximum expected extra gain is recommended as well. The case study results show that the method is rational and effective for decision-making.

关 键 词：梯级水电站 补偿调度 风险分析 

分 类 号：TV737[水利工程—水利水电工程]