基于流速仪法的柘林水电厂A1号机组效率试验研究

发布时间：2018-06-12 20:07

本文选题：水轮发电机组 + 效率试验　；参考：《中国农村水利水电》2017年10期

【摘要】：水轮机效率是评价水轮机性能的重要指标,是指导水电站经济运行的关键参数。江西柘林水电厂A1号机组服役时间长、老化严重,经专家论证后对其进行了改造。为了检验机组改造效果、鉴别设备的性能,对改造后的机组进行了原型效率试验研究。试验采用流速仪法测量机组在试验水头下的流速分布,利用平均流速法计算机组流量,测量出工作水头与机组出力,最终计算出原型机组效率并率定蜗壳流量系数。进而对测试结果进行整理分析,得到指导机组优化运行的性能曲线。试验结果验证了试验方法的可行性和准确性,且机组的更新改造达到设计要求。
[Abstract]:Turbine efficiency is an important index to evaluate the performance of hydraulic turbines and a key parameter to guide the economic operation of hydropower stations. Unit A1 of Zhelin Hydropower Plant in Jiangxi Province has long service time and serious aging. In order to verify the effect of unit transformation and identify the performance of the equipment, the prototype efficiency of the retrofitted unit was studied. The velocity distribution of the unit under the test water head is measured by using the velocity meter method, and the working head and the unit output force are measured by the average flow rate method. Finally, the volute flow coefficient of the prototype unit is calculated. Then the test results are analyzed, and the performance curve is obtained to guide the optimal operation of the unit. The test results verify the feasibility and accuracy of the test method, and the renewal and transformation of the unit meet the design requirements.
【作者单位】：武汉大学水力机械过渡过程教育部重点实验室;国家电网江西省柘林水电厂;
【基金】：国家自然科学基金资助项目(51379160) 高等学校博士学科点专项科研基金资助项目(20130141130001)
【分类号】：TV734.1

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