抽水蓄能发电机机网仿真计算  

Simulation Calculation for Pumped-Storage Generator Network

作　　者：刘琪[1] 宋敏慧[1] 杨华峰[1] 

机构地区：[1]哈尔滨大电机研究所,黑龙江哈尔滨150040

出　　处：《防爆电机》2015年第2期16-20,24,共6页Explosion-proof Electric Machine

摘　　要：通过查阅大量资料和反复调试模型之后建立了抽水蓄能发电机机网仿真模型,主要对突然短路、非正常工况发热、误同期并网工况、失磁异步运行工况、甩负荷工况进行了仿真计算,对机组突然短路工况时的三相突然短路和两相突然短路及单相突然短路电流和电磁转矩进行了计算。非正常工况发热是对机组非正常工况发热时的定子电流和定子绕组温升进行了计算,误同期并网工况是计算120℃误同期并网工况,失磁异步运行工况就是电机失磁时的工况进行计算,甩负荷工况主要是电机正常运行时,负荷突然降为0时的相关曲线。并给出了以上工况下的仿真瞬态曲线,从中获得了一些对实际运行具有指导性的结论。In this paper, the simulation model for pumped storage generator network is es- tablished based on reading mass data and repeatedly debugging the model. The simulation cal- culations are mainly carried out on working conditions of sudden short circuit, abnormal heat- ing, fault synchronization, excitation-loss asynchronous operation and load shedding. The gud- den short-circuit current and electromagnetic torque of three-phase, two-phase and single-phase are calculated. Abnormal working condition heating is to calculate stator winding temperature raise and stator current of the unit during abnormal working condition, fault synchronization working condition is to calculate 120 degree fault synchronization working condition, excitation- loss asynchronous operation working condition is to calculate working condition of motor with ex- citation-loss, load shedding working condition is the relative curve when load was suddenly re- duced to zero. This paper also shows simulation transient curves of the above working condi- tions, then gives directive conclusion with practical guidance.

关 键 词：突然短路 误同期并网 失磁运行 甩负荷 非正常工况发热 

分 类 号：TM312[电气工程—电机]