300Mvar空冷隐极同步调相机多并联支路定子绕组端部接线结构优化  

Optimization of Connecting Structure of Stator End Winding with Multiple Parallel Branches in 300Mvar Air-cooled Cylindrical Rotor Synchronous Compensator

作　　者：陈景易[1] 黄浩[1] 朱志佳 杨华峰[1] 于鸿浩 CHEN Jingyi;HUANG Hao;ZHU Zhijia;YANG Huafeng;YU Honghao(Harbin Electric Machinery Company Limited,Harbin 150040,China)

机构地区：[1]哈尔滨电机厂有限责任公司,哈尔滨150040

出　　处：《大电机技术》2020年第3期13-16,55,共5页Large Electric Machine and Hydraulic Turbine

基　　金：黑龙江省自然科学基金(JJ2019LH2389)。

摘　　要：本文研究的300Mvar空冷隐极同步调相机定子绕组采用多并联支路设计,绕组端部接线结构紧凑,需采取特殊措施避免电晕。针对此情况,笔者提出了一种新的定子绕组端部接线结构,该设计仅改变每条支路极相组的连接顺序,操作简便易行。并将原设计并联环与新设计并联环的区域合成电流及电势差进行对比分析,结果表明,本文提出的定子绕组端部接线结构可以使处于不同相带的两个相邻的定子线棒之间的电压降低为传统接法的50%,将调相机的起晕电压提高至以往结构的2倍,显著地提高了调相机的耐电晕性能。The stator winding of 300 Mvar air-cooled cylindrical rotor synchronous compensator studied in this paper adopts a multi-parallel branches design, the connecting structure of stator end winding is compact, and special measures need to be taken to avoid corona. In response to this situation, a new stator winding end connection structure is proposed, which only changes the connection order of each branch polar phase group and not only can be implemented simply and conveniently but also can produce significant results. In this paper, original parallel ring design and novel parallel ring design are compared and analyzed in terms of regional synthesis current and potential difference. The analysis results show that the stator winding end connection structure proposed in this paper can reduce the voltage between two adjacent stator bars in different phase bands to one-half of the traditional connection method, and increase the corona voltage of the compensator twice as much as the traditional structure. The research results in this paper improve the corona resistance performance of the compensator significantly.

关 键 词：调相机 多并联支路 定子绕组 并联环 端部接线 耐电晕 

分 类 号：TM303.1[电气工程—电机]