大型汽轮发电机带负荷失磁模型建立与分析  

Model of large steam turbine generator with load loss of excitation and analysis of loss of excitation process

作　　者：吕艳玲[1] 戈宝军[1] 

机构地区：[1]哈尔滨理工大学电气与电子工程学院,黑龙江哈尔滨150080

出　　处：《电机与控制学报》2015年第6期22-27,共6页Electric Machines and Control

基　　金：国家自然科学基金(51407049);高等学校博士点专项科研基金资助项目(20132303120001)

摘　　要：大型汽轮发电机带负荷失磁分析中,首先建立大型汽轮发电机从失磁到失磁后有功功率调节过程的仿真模型,然后通过对QFQS-200-2失磁到有功功率调节全过程进行仿真与试验对比分析,证明该大型汽轮发电机从失磁到有功功率调节过程的仿真模型的正确性,最后对QFQS-200-2汽轮发电机带不同比例有功功率负荷发生失磁故障进行分析,分析了该电机失磁后定子电流、定子电压、转子的转速、输出的有功、无功的变化,以及失磁后立刻减少所带有功功率负荷后上述各输出量的变化,为大型汽轮发电机带额定负荷发生失磁故障,提供有功功率调节量值。In analysis of large steam turbine generator model with load loss of excitation, simulaion model of the large steam turbine generator from excitaion loss to the active power regulation was set up, and for QFQS -200 -2, regulating process from excitation loss to active power were simulated and experimental comparison was conducted. It shows the correctness of the simulation model in the active power regulation process, and excitation loss faults were analyzed which are caused by the QFQS -200 -2 turbine genera- tor with different proportion of active power load. The stator current, stator voltage, rotor speed, the change of the output of the active and reactive power, and variation of all output immediately after loss of excitation reduction with active power load were analyzed. The results and analysis provide regulated val- ues of active power when large steam turbine generators with rated load generate faults of excitation loss.

关 键 词：汽轮发电机 失磁 调节 有功功率 仿真分析 

分 类 号：TM312[电气工程—电机] TM301