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首页> 外文会议>HydroVision 2008 conference technical papers >Hydro-Québec Experience with Acoustic Scintillation Flow Measurement Method in Low Head Power Plants
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Hydro-Québec Experience with Acoustic Scintillation Flow Measurement Method in Low Head Power Plants

机译：低水头发电厂魁北克水声闪烁流量测量方法的经验

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摘要

The flow is one the most difficult parameters to measure in determining the efficiency ofrna hydraulic turbine. For low head power plants, it is even more difficult because thernmeasurement is normally done in a short converging intake. Few methods exist forrnperforming the flow measurement under these conditions; one of them is the AcousticrnScintillation Flow Measurement (ASFM) method. After a first comparative test with arnCurrent Meter (CM) measurement at Laforge-2 power plant, HQ acquired an ASFMrnsystem and has gone through a series of comparative tests in five other power plants.rnFor some power plants, the agreement between both methods (CM vs ASFM) was goodrnwhile for some others, difficulties were encountered which lead to a greater difference.rnThese results will be used to illustrate the accuracy achievable with the ASFM underrnvarious intake hydraulic conditions.
机译：在确定水轮机效率时，流量是最难测量的参数之一。对于低水头发电厂，这甚至更加困难，因为通常在短会聚的进水口进行测量。在这种情况下，很少有方法可以执行流量测量。其中之一是AcousticrnScintillation流量测量（ASFM）方法。在Laforge-2电厂进行arnCurrent Meter（CM）测量的首次对比测试后，总部获得了ASFMrnsystem，并在其他五个电厂进行了一系列对比测试.rn对于某些电厂，两种方法之间的协议（CM与ASFM相比）更好，但是遇到了一些困难，导致更大的差异。这些结果将用于说明在各种进气液压条件下ASFM可获得的精度。

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