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首页> 外文会议>International Systems Conference >System of Systems Strand Tilt Analysis Perspective on MediuMHigh Voltage Stator Bar and a Non-Destructive Testing Case Study
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System of Systems Strand Tilt Analysis Perspective on MediuMHigh Voltage Stator Bar and a Non-Destructive Testing Case Study

机译：中高电压定子杆和非破坏性检测案例研究的系统股线倾斜分析透视系统

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Stator copper bar is usually divided into several thin uniform strands, insulated from each other. This is done to reduce additional induced voltage due to convergence of magnetic flux from winding and rotor themselves. Flux density varies radially in density which causes different induced voltage strand to strand. To cancel out unbalanced strand voltage and minimize circulating current and resultant heating, strands are usually transposed. Transposition mechanism is fairly common, and is referred as roebelling. Manufacturing an ideal transposition is a difficult process. There is almost always some associated manufacturing defects present. Untreated issues like strand tilt leads to less utilization of material (less efficiency) & also issues like partial discharge leads to heating due to voids in the insulation. Nonconformance cost incur during the operation, if issues are not corrected. Paper presents the analysis with SoS (System of Systems) approach. In a better performing system (in this case electrical generator), each of the systems (strand, roebel coil and each phase winding) should collectively work to achieve the target of overall system (i.e. more efficient generator system). There are some other issues which arises due to the strand misalignment, e.g. void in the insulation, partial discharge and slot induced eddy voltage change and are discussed in the paper. Paper presents how important is it for system to work in coordination with other systems in order for the overall system to work efficiently. Paper also presents the complexity in evaluating strand tilt during stator coil manufacturing process. A unique solution of non-destructive testing to detect strand tilt is presented which provided excellent result. This is helpful to evaluate, how off the strand is tilted at any particular location on the generator coil.
机译：定子铜棒通常分成几个薄均匀的股线，彼此绝缘。这是为了减少由于绕组和转子本身的磁通量的收敛而降低额外的感应电压。磁通密度以密度径向变化，其导致不同的诱导电压股线到股线。为了抵消不平衡的股线电压并最小化循环电流并产生加热，通常转过来。转子机制相当常见，并且被称为roobelling。制造理想的换位是一个难度的过程。现在几乎总是存在一些相关的制造缺陷。斯特兰倾斜等未处理的问题导致材料的利用率较少（较低效率），并且由于绝缘中的空隙引起的局部放电等问题导致加热。如果未纠正问题，在操作期间不合格成本会产生。纸张介绍了SOS（系统系统）方法的分析。在更好的执行系统（在这种情况下，在这种情况下发电机）中，每个系统（股线，滚动线圈和每个相绕组）应共同起作用以实现整个系统的目标（即，更有效的发电机系统）。有一些其他问题由于股线未对准而产生的问题，例如，在绝缘，局部放电和槽引起的涡电压变化中的空隙，并在纸上讨论。纸张提供与其他系统协调工作的系统有多重要，以便整体系统有效地工作。纸张还提出了在定子线圈制造过程中评估股线倾斜的复杂性。介绍了用于检测股线倾斜的非破坏性测试的独特解决方案，其提供了优异的结果。这有助于评估，在发电机线圈上的任何特定位置倾斜股线。

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