【摘要】 同步调相机是比较理想的高动态响应动态无功补偿装置，当系统发生三相突然短路等严重故障时，同步调相机能快速地吸收或发出无功功率以支撑电网电压稳定。对于300Mvar等级的同步调相机，三相突然短路时定子绕组端部将承受极大的动态电磁力冲击，对其准确计算是设计大容量同步调相机端部结构的关键问题之一。本文以300Mvar空冷隐极同步调相机为例，提出同步调相机端部磁场的三维计算模型和定子绕组端部电磁力的计算方法，并对调相机在出口端发生空载三相突然短路时的端部电磁场分布、定子绕组端部电磁力进行了分析。更多还原

【Abstract】 The synchronous compensator is a good high-response dynamic reactive compensation device. When three-phase sudden short circuit happens in power system, the system voltage can be forced to normal value quickly by the reactive power generated from the synchronous compensator. For a 300 Mvar synchronous compensator, a very large shock of electromagnetic fore happens in the stator winding end region when the short circuit happens. Therefore, the calculation of magnetic field and electromagnetic force of stator winding is one of basic problems in the design. In this paper, a 300 Mvar air-cooled cylindrical rotor synchronous compensator is taken as an example, and the calculation model of three dimension end region magnetic field is established and the computation method of end region electromagnetic force of synchronous compensator is proposed. At last, the distribution of magnetic field and electromagnetic field in the region of 300 Mvar synchronous compensator is calculated.更多还原