| 1. | 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 |
| 2. | 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。 |
| 3. | This thesis analyzes the retrofit of the end part electromagnetic shielding and the stator winding bars , i . e . the 2 technical measures taken for the purpose of expanding the capacity of 300 mw qsf - 300 - 2 type of turbine - generator
本文分析了qsf - 300 - 2型300mw汽轮发电机增容改造采取的两种技术手段：端部电磁屏蔽的改造和定子线棒的改造。 |
| 4. | It may lead to 30 ~ 40 temperature difference . in this thesis , various transposition methods are studied and corresponding mathematical models were set up . on this basis , a program of strand current calculation and transposition analysis were made
本文在研究发电机定子线棒的换位方式的同时，建立了数学模型及相应的泛函表达式，编制相应的换位运行程序对各种换位方式下的电流分布进行计算。 |
| 5. | Based on the wall temperature of hollow wire , the further calculation program has been given . it account for the complexity of the stator ' s structure and can be used in the calculation of the temperature distributions in arbitrary cross section of windings
在空心导线壁温分布计算方法确立的基础上，充分考虑到定子线棒结构的复杂性，采用有限差分的方法编制了通用性较强的线棒截面温度分布计算程序。 |
| 6. | The testing results show that characteristic of tong - ma epoxy glass - fiber mica tape for three gorges hydro - generator is very excellent , and the property of hydro - generator ' s bar made by this tong - ma epoxy glass - fiber mica tape reaches the demand of alstom
试验结果表明：该云母带固化前后的性能及用该云母带制造的三峡发电机定子线棒的性能均达到alstom公司的要求，从而满足中国长江三峡开发总公司验收合同的要求。 |
| 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. | By starting with the analysis of generator end structure and overheat sources , it is presented that the technical key required to expand the capacity of the unit is to solve the electromagnetic leakage shielding problem . by proceeding with the analysis of the reasons causing the aging of the stator winding bars insulation , the necessity for stator winding bars to adopt class f insulation and relative fixing technological improvement are pointed out so as to extend the service life of the winding bars insulation
从分析发电机端部结构及过热原因入手，提出了增容的技术要点在于解决端部漏磁屏蔽问题；从发电机线棒绝缘老化原因分析入手，指出为延长定子线棒绝缘使用寿命，线棒主绝缘采用f级的必要性以及相关工艺的改进。 |
| 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。 |
