摘要
介绍了电容式电压互感器CVT散射参数测试方法以及对CVT一次侧施加浪涌脉冲信号获得频域特性的脉冲测试方法,详细描述了适用于谐波测量的高压谐波测试方法和在线谐波宽频特性测试方法,综合分析了每种方法的特点以及应用范围。研究结果表明,散射参数法适用于电磁兼容分析时测量CVT的宽频传输特性;而对于宽频段谐波测量,高压谐波测试法通过施加高压谐波源能较准确满足CVT内部元件实际的工作状态,获得的宽频传输特性更能反应宽频段谐波测量的要求;在线谐波测试法不需拆卸CVT且在电网正常运行状态下能获得CVT的宽频传输特性。
The measures to obtain the scattering parameter of CVT and obtain the frequcency characteristic of CVT by surge pulse test method are mentioned.High voltage harmonic test method and online wide-band characteristic test method are described and the characteristics of each method and applications are analyzed.The results show that scattering parameter method is suitable for EMC analysis,the wide-band character obtained by high voltage harmonic test method is more accurate as the components inside CVT working in normal condition,and online harmonic test method can obtain the wide-band transfer characteristic without disassemblying CVT.
出处
《吉林电力》
2011年第5期1-4,16,共5页
Jilin Electric Power
关键词
CVT宽频传输特性
散射参数法
脉冲测量法
高压谐波测试法
在线谐波测试法
CVT wide-band transfer character
scattering parameter method
pulse function test method
high voltage harmonic test method
online harmonic test method
