惠州抽水蓄能电站能效分析

Energy Efficiency Analysis of Huizhou Pumped Storage Power Station

综合效率是评价抽水蓄能电站节能与否的重要指标,它从根本上反映电站节能水平。对抽水蓄能电站的能源流程进行了分析,针对抽水蓄能电站现有估算的综合效率的数据异常问题进行了探讨,结果表明这一现象主要是由于统计周期内水量不平衡所导致的。通过比较分析估计效率与循环效率,在考虑水量平衡以及上库水量的蒸发渗漏后完善了综合效率计算方法,并从整个电站水资源综合利用的角度出发,定义计算了综合能效。还利用惠州抽水蓄能电站的数据进行了综合效率与综合能效计算,系统地分析了能源流程各环节的能耗情况,并得出了相应的结论。

As an important energy saving index for pumped storage power stations , the comprehensive efficiency reflects their energy saving level .However , the calculated comprehensive efficiency values based on the current evaluation method are usually inaccurate .Following an introduction of the energy flow in pumped storage power stations , the above mentioned problem is analyzed .It shows that the water imbalance in the statistic period could be the reason .With a comparison between the estimated efficiency and the cycle efficiency , calculation method of the comprehensive efficiency is improved considering the water balance and the evaporation and leakage of the upper reservoir .Then, the comprehen-sive energy efficiency is calculated , which shows the comprehensive utilization of water resources .Finally, the compre-hensive efficiency and the comprehensive energy efficiency of the Huizhou Pumped Storage Power Station are evaluated , and the energy consumption situation of each process in the energy flow is analyzed .Some useful conclusions are drawn .