• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>HydroVision 2008 conference technical papers >Reducing the Uncertainty of Hydroelectric Turbine Performance Test Results at Grand Coulee Dam
【24h】

Reducing the Uncertainty of Hydroelectric Turbine Performance Test Results at Grand Coulee Dam

机译：减少大库里大坝水轮机性能测试结果的不确定性

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

When the results of the Grand Coulee Unit G17 runner replacement acceptance testrnindicated that the runner did not meet performance guarantees, an investigation wasrnundertaken to determine if the problem was with the test method rather than the runner.rnPotential errors in the measured parameters such as head, flow, and power wererninvestigated. The testing indicated that the uncertainty of the power measurement wasrngreater than originally anticipated. For the turbine power measurement, the generator isrnused as a dynamometer. Power out of the generator is measured, and the generatorrnlosses are added back to obtain the turbine output. The power output of the generatorrnis calculated by a wattmeter connected to the secondary voltage and current outputsrnfrom the unit potential and current transformers. This paper will describe the stepsrntaken to investigate the uncertainty of the turbine power measurement as well as errorrnsources that were found. It also will address methods that can be used to reduce thernuncertainty of hydroelectric turbine performance test results by improving the accuracyrnof the power measurement.
机译：当Grand Coulee单位G17转轮更换接受测试的结果表明转轮不符合性能保证时，将进行调查以确定问题是否出在测试方法上，而不是转轮.rn测量参数中的潜在误差，例如水头，流量和功率进行了调查。测试表明，功率测量的不确定性比最初预期的要大。对于涡轮功率测量，将发电机用作测功机。测量发电机的功率，然后将发电机的损耗加回去以获得涡轮机输出。发电机的功率输出由连接到次级电势和电流互感器的次级电压和电流输出的功率计计算得到。本文将介绍为调查涡轮功率测量的不确定性以及发现的误差源而采取的步骤。它还将介绍可用于通过提高功率测量的准确性来减少水电涡轮性能测试结果不确定性的方法。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号