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在不列颠哥伦比亚省昆特内(Kootenay)河水电站进行了流量测量方法的比较试验。试验目的是提供基本的数据,便于音响流量测量系统和其它常用的流量测量系统进行比较,为音响测流法被通用工业所接受和列入规范的试验方法之列打下基础。根据美国机械工程师协会PTC—18和国际电工委员会IEC41的试验标准,试验被精细地进行。音响测流法由不列颠哥伦比亚省水电部门和Ferranti O. R. E. 公司分别使用西屋公司的第一流的流量计和声学流量计进行。这方法与斯泰来顾问们进行的吉普逊法(压力—时间法)魁北水电部门进行的传感器压力—时间法和流速仪法,美国垦务局进行的安勒盐水速度法,安大略省水电部门进行的示踪稀释法和太平洋汽油和电气公司进行的两种示踪稀释法进行了比较。使用上面9种方法的现场试验,在7种不同活动导叶开度下进行,而每种导叶开度下测4次,即总共7×4=28次试验。进行的附加试验确定了不同入口条件对不同流量测量系统结果的影响。根据昆特内河水电站试验的结果,报告断定,音响测流法和任何被认可的规范方法结果一样正确,除了流速仪法以外,音响法计算的偶然误差比其它方法都低。在被认可的规范方法中流速仪法的偶然误差最低。
A comparative test of flow measurement methods was conducted at the Kootenay River Hydropower Station in British Columbia. The objective of the test was to provide basic data for the comparison of acoustic flow measurement systems with other commonly used flow measurement systems and lay the groundwork for acoustic flow measurement to be accepted by the common industry and included in the standardized test methods. According to the American Society of Mechanical Engineers PTC-18 and the International Electrotechnical Commission IEC41 test standards, the test was fine. Acoustic flow measurement was conducted by British Columbia’s utilities and Ferranti O. R. Company using Westinghouse’s state-of-the-art flow and acoustic flowmeters, respectively. This approach works in conjunction with the Stamford consultants’ method of sensor pressure-time and velocimetry by the Gibbson method (pressure-time method) in Québec’s hydropower department, the Ares Saltwater Velocity Method by the US Bureau of Reclamation, the Ontario Hydroelectric The Departmental Tracer Dilution method was compared with two tracer dilution methods conducted by Pacific Gas and Electric Company. Field tests using the above nine methods were conducted at seven different guide vane opening degrees, with each guide vane opening measured four times, a total of 7 x 4 = 28 trials. Additional tests were conducted to determine the effect of different inlet conditions on the results of different flow measurement systems. According to the results of the test of the Quintone River hydropower station, the report concludes that the acoustic flow measurement method is as accurate as any accepted standardization method and that, except for the flow meter method, the accidental error in the acoustics method is lower than in any other method. In the approved standard method, the meteorological method has the lowest accidental error.