基于ETAP的高压大容量同步电动机启动仿真研究

摘要

ABSTRACT:With the 10.5 kV/8 000 kW synchronous motor of Donglei Pump Station as a practical research case and in accordance with the requirements of the starting of the synchro-nous motor,this paper analyzes and calculates the bus voltage drop at all levels of the power supply system which uses full-voltage starting method. Besides, this paper gives dynamic simulation results of the full-voltage starting process of the synchronous motor with ETAP and analyzes the influence of the bus voltage drop on the unit operation stability and the useful measures that can be used to reduce the impact of starting pre-ssure drop. Therefore the paper has certain reference significa-nce to the actual engineering.%以陕西省抽黄工程—东雷泵站10.5 kV/8000 kW同步电动机为案例，按照同步电动机启动要求，计算分析了全压启动时泵站供电系统的各级母线压降。采用电力系统仿真软件ETAP对电动机全压启动过程进行动态仿真，分析了母线压降对运行机组稳定性的影响以及为改善启动造成的冲击压降可采取的措施，对实际工程具有一定的借鉴指导意义。