宋雪莹,谭忠富

• 1:华北电力大学
• 2:内蒙古科技大学

摘要(Abstract)：

随着风电和光伏发电系统的并网等级不断升高,在接入系统高压侧时不可避免地引入谐波。针对电容式电压互感器(CVT)应用于高压侧谐波测量的实际需求,这里通过对适用于CVT谐波测量方法进行理论分析,并设计分析相应的CVT谐波测量装置验证方法的可行性。在CVT的分压电容和中间变压器的接地支路分别接入高精密钳型电流互感器,在得出电流参数值基础上,根据基尔霍夫定律推导得出CVT一次侧谐波电压参数。计算结果可经以太网或USB 2.0接口实现数据上传。设计CVT谐波分析软件完成数据导出、显示以及存盘等操作。试验结果证明了所采用方法的正确性、设计方案的可行性以及CVT谐波测量装置的有效性。

关键词(KeyWords)： CVT;LabVIEW;谐波测量;相量拟合;谐波数据采集;DSP;并网

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(71573084)~~

作者(Author): 宋雪莹,谭忠富

DOI: 10.16652/j.issn.1004-373x.2018.08.028

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