摘要
针对电容式电压互感器(Capacitor Voltage Transformers,CVT)应用于谐波测量的需求,提出一种CVT谐波电压测量校正装置的设计方案。通过研究CVT主电容参数波动与谐波传变的关系,运用双线插值算法实现对校正系数的求解;通过考虑现实需求以及运行效率,提出了采样频率和采样长度的计算方法。以STM32F407为控制处理核心,实现对系统的综合管理。该装置对CVT谐波测量的校正性能已通过实验数据得以验证。此外,该装置还具有安装方便、通用程度高的特点。
Aiming at the demand of capacitor voltage transformer(CVT)applied in harmonic measurement,a design scheme of correction device for CVT harmonic voltage measurement is proposed.By studying the relationship between the fluctuation of CVT main capacitor parameters and harmonic transmission,the bilinear interpolation algorithm is used to solve the correction coefficient.By considering the actual demand and operation efficiency,the calculation method of sampling frequency and sampling size is proposed.STM32 F407 is used as the control processing core to realize the integrated management of the system.The correction performance of the device for CVT harmonic measurement has been verified by experimental data.In addition,the device has the characteristics of convenient installation and high degree of generality.
作者
方文田
FANG Wentian(School of Automation,Guangdong University of Technology,Guangzhou 510006,China)
出处
《黑龙江电力》
CAS
2020年第3期208-214,共7页
Heilongjiang Electric Power
