适用于谐波测量的CVT宽频传输特性测试方法  

Test Methods of CVT Wide-band Transfer Characteristics Suitable for Measuring the Harmonic

作　　者：高长征 司秉千[2] 田春光[1] 

机构地区：[1]吉林省电力有限公司电力科学研究院,长春130021 [2]华北电力大学,北京102206

出　　处：《吉林电力》2011年第5期1-4,16,共5页Jilin Electric Power

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.

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 

分 类 号：TM451.2[电气工程—电器]