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水电机组发电机效率试验的基本原理和试验要求,给出了优化的管路改造方案,避免了冷却循环管
               路的切割或焊接工作;为了优化试验过程,在单个负荷工况下采用总体损耗法和分项损耗法分别计
               算,验证两种方法效率计算结果的一致性,进而直接采用分项损耗法得到各个工况的发电机效率,
               大大缩短了试验时间,为机组的验收通过和尽早移交提供支持。

               参   考   文   献:



                [ 1 ] IEC 60034-2-2 . Rotating electrical machines-Part 2-2:Specific methods for determining losses and efficiency
                       of rotating electrical machinery from tests- Supplement to IEC60034-2-1[S]. 2010 .
                [ 2 ] IEC 60034-2-1 . Rotating electrical machines-Part 2-1:Standard methods for determining losses and efficiency
                       of rotating electrical machinery from tests(Excluding machines for traction vehicles)[S]. 2007 .
                [ 3 ] 中华人民共和国国家质量监督检验检疫总局,中国国家标准管化管理委员会 . 量热法测定电机的损耗和效
                       率:GB/T 5321-2005[S]. 北京:中国标准出版社,2005 .
                [ 4 ] 闫迎,郝剑波 . 基于量热法的大型水轮发电机损耗测量和效率计算[J]. 湖南电力,2014,34(3):8-11 .
                [ 5 ] MCLEOD P,BRADLEY K J,FERRAH,et al . High precision calorimetry for the measurement of efficiency of in⁃
                       duction motors[C]/The 1998 IEEE Industry Applications Conference . Thirty-Third IAS Annual Meeting . USA,
                                    /
                       1998 .
                [ 6 ] SZABADOS B,MIHALCEA A . Design and implementation of a calorimetric measurement facility for determining
                       losses in electrical machines[J]. IEEE Trans . Instrum . Meas . ,2002,51(5):902-907 .
                [ 7 ] BRADLEY K J,CAO W,ARELLANO-PADILLA J . Evaluation of stray load loss in induction motors with a com⁃
                       parison of input-output and calorimetric methods[J]. IEEE Trans . Energy Convers .,2006,21(3):682-689 .
                [ 8 ] 梁朝晖 . 贵港水电站灯泡贯流式水轮发电机效率试验论证[J]. 广西电力工程,2001(2):38-42 .
                [ 9 ] RITCHIE E,PEDERSEN J K,BLAABJERG F,et al . Calorimetric measuring systems[J]. IEEE Ind . Appl .
                       Mag .,2004,10(3):70-78 .
                [ 10] 刘孝甫 . 广蓄二期 300MW 电动发电机效率试验[J]. 水力发电,2001(11):57-60 .
                [ 11] TURNER D R,BINNS K J,Shamsadeen B N,et al . Accurate measurement of induction motor losses using bal⁃
                       ance calorimeter[J]. IEEE Proc . B,1991,138(5):233-242 .


                  Research of generator efficiency test in hydropower project based on calorimetric method


                                              1      2              1              1
                                     ZHOU Ye ,LI Ke ,PAN Luoping ,CAO Dengfeng
                               (1. China Institute of Water Resources and Hydropower Research,Beijing  100038,China;
                                        2. Sinohydro Bureau 5 Co.,Ltd. ,Chengdu  410004,China)


                   Abstract: In recent years, a large number of overseas hydropower projects have been designed and con⁃
                   structed by domestic hydro enterprises,some of which have been in commissioning and acceptance period,
                   and the test and verification of generator efficiency has become a key part during the period. However,the
                   generator test has been limited by field installation condition and test time arrangement, and it is difficult
                   to carry out. The paper introduces the generator efficiency test principle based on calorimetric method,then
                   discusses and gives optimized solutions for some key technologies and difficulties, including modification of
                   cooling pipes, segregated losses calculation, and test procedure arrangement. With a test example carried
                   out in Soubre hydropower plant of Coast Ivory,it proves that the solution and test scheme can meet the re⁃
                   quirement of IEC regulation strictly, and have good consistency and validity, which can provide technical
                   support for other similar tests or needs of hydropower projects.
                   Keywords:hydropower unit;generator efficiency;calorimetric method;total loss;segregated losses

                                                                                   (责任编辑:王学凤)



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