| 1. | Thermal cycle testing of form - wound stator bars and coils for large generators 大型发电机用模绕定子棒和模绕线圈的热循环试验 |
| 2. | Analysis and comparison of four transposition methods in the stator bar of hydrogenerator 水轮发电机定子线棒4种换位的分析与比较 |
| 3. | Recommended practice for thermal cycle testing of form - wound stator bars and coils for large generators 大型发电机线绕定子棒和线圈的热循环试验推荐规程 |
| 4. | So that the maximum pd grads is the characteristic quantity of evaluating the insulation condition of stator bar has been put forward 因此,提出了以绝缘局部放电的最大放电量的梯度作为评定绝缘的一个特征量。 |
| 5. | To increase the utility of energy sources , it is necessary to pay full attention to the refurbish and upgrade of the generators , where the skin effect of stator bars is an important problem 为了进一步提高能源的利用率,人们对已有发电机的增容增效引起了高度的重视,发电机定子线棒的集肤效应问题也受到广泛的关注。 |
| 6. | Test and analysis for the stator bars temperature in gezhouba power plant show that , by different transposition , temperature distribution in bars is different . the reason is in skin effect and circulating current among different layers 究其原因,各股线的电流不等,股线间存在较大的环流,造成各股线间温差可高达30 40 。 |
| 7. | Preparing the manufacturing operation plans for generator casing , rotors assembly , stator bars and laminations producing in accordance with engineering documents and master planning schedule in order that our production has the reasonable costs and efficiency and the designed quality 根据工程设计文件和主计划按时为定子机座、转子下线、定子线棒和冲片的制造等编制工艺过程卡,使产品制造成本和加工效率合理,产品质量达到设计要求。 |
| 8. | In this paper , the multifactors - electrical , thermal , cool and thermal circulation of accelerating ageing experiment based on the stator bar of 220mw turbine generator has been conducted in the laboratory . the results of the experiment show that there has not fixed rule between maximum pd quantity and insulation , but the increasing of maximum pd grads increase along with ageing time of insulation 本论文通过对220mw的汽轮发电机真机线棒进行电、热、冷热循环等多因子老化试验,发现局部放电的最大放电量与绝缘老化时间之间没有固定的规律可寻,而最大放电量的梯度随绝缘老化时间的增大而增大。 |
| 9. | By adopting the traditional way to rebuild the ventilation system is also an effective measure , but the results will not be significant . by changing the transposition of the stator bars in the generators to decrease their maximum temperature has been adopted by some power plants and good economic results have been obtained 采用传统的改造发电机通风系统只是有效措施之一,但通常改造的空间不大,在本文中提出改变发电机定子线棒的换位方式以彻底降低线棒温度,这种方式已被一些水电厂所采用,取得了良好的经济效果。 |