摘要
励磁电流是汽轮发电机的主要运行数据之一,其大小直接影响发电机的运行性能。根据汽轮发电机的模型特点及励磁电流计算的原理,以一台600 MW汽轮发电机为例,建立发电机励磁电流计算模型,计算了静磁场和瞬态场下的额定负载励磁电流;并用Excel VBA编写计算程序,让Excel VBA驱动Maxwell有限元软件计算励磁电流。该程序不仅能参数化建模,还能实现励磁电流有限元计算的自动迭代,具有一键式建模和一键式求解功能,降低了励磁电流计算难度,缩短了汽轮发电机的研发周期,实现工程应用价值。
Excitation current is one of the main operating data of turbo generator, it directly affects the performance of the generator. Aceroding to the feature of turbo generataor and the principle of excitation current calculation, an example of 600 MW tubro generator was taken, building the field current calculation model of tubro generator, calculating the rated load excitation current with magnetostatic field and transient field. Design the software that Excel VBA drive Maxwell to calculate the excitation current. Not could the software build the model of generator parametrically, but also realized the iterative calucation of field current atuomatically. The software had the features of creating model and calculating excitation current with one button, the difficulty of field current calculation was reduced and the generator＇s development cycles was shorten, realizing the value of engineering applications.
出处
《电机与控制应用》
北大核心
2016年第11期61-66,共6页
Electric machines & control application
基金
上海市自然科学基金项目(11ZR1413900)
上海市教委重点科学资助项目(J51901)
上海市教委重点科研项目(09ZZ211)
上海市经济与信息化委员会资助项目(13X1-37)
上海电机学院重点科学资助项目(09XKJ01)
