摘要
由于电力系统中暂态过电压的高频特性,变压器的常规电路模型不能满足仿真计算的要求,因此需要建立其宽频电路模型。为了建立变压器的宽频模型,拟采用黑盒子方法来获得其宏模型,而建立宏模型的基础则是获得变压器的宽频网络参数。介绍了几种测量变压器宽频网络参数的方法,对测量结果的对比和分析表明这些方法的可行性和有效性。
The suppression and protection of over-voltage in power system,as well as the study of electromagnetic compatibility in power system need to build electromagnetic transient model of the components and equipments.Since the high frequency characteristic of the transient over-voltage in power system,conventional circuit simulation model of the transformer can not meet the requirement,therefore its wide band circuit model needs to be built.In order to establish the wide band model of the transformer,the black box approach is adopted to obtain the macro model,and then before establishing the macro model its network parameters should be obtained firstly.Several methods are introduced for measuring the wide band network parameters of the transformer. Compared with the measured results,it shows that these methods are feasible and effective.
出处
《陕西电力》
2011年第6期30-33,共4页
Shanxi Electric Power
关键词
变压器
散射参数
导纳参数
脉冲响应法
扫频法
transformer
scattering parameter
admittance parameter
impulse response method
scanning frequency method
