桐子林水电站调度难点分析及对策研究

Study on difficulties and countermeasure of Tongzilin Hydropower Station dispatching

桐子林水电站是雅砻江下游最末一个梯级水电站,在运行调度过程中存在着诸多的难点。主要针对该水电站可调库容小、入库流量不确定性大、日计划电量与来水量不平衡、电网运行方式复杂这4个调度难点进行了详细分析,并针对这些调度难点给水电站安全运行带来的风险进行了识别。同时,分别就枯平期和汛期两种调度工况提出了枯平期通过临时调整负荷控制库水位、“两段式”调令优化泄洪预警等行之有效的安全调度策略,从而降低了水电站的运行风险,提高了水电站的经济效益。研究成果可对同类型水库的安全运行提供一定的借鉴与参考。

Tongzilin hydropower station,the last cascade hydropower station in the lower reaches of Yalong River,has many difficulties in its operation and dispatching.In this paper,the dispatching difficulties were analyzed in detail,such as small adjustable storage capacity,large uncertainty of incoming flow,imbalance of daily planned electricity quantity and incoming water quantity,and complex operation mode of power network.In addition,the effective safety dispatching strategies of controlling reservoir water level by temporary adjustment of load in dry and normal season and"two-stage"regulation to optimize flood discharge warning in flood season were put forward,which can reduce the operation risk and improve the economic benefit of the hydropower station.The research results have some reference significance for the safe operation of similar reservoirs.