新型电力系统电流真有效值测量方法与应用  

New Measurement Method and Application of True Effective Value of Current in Power System

作　　者：张可可 孙飞跃 ZHANG Keke;SUN Feiyue(Shanghai Huadong Power Transmission and Transformation Engineering Co.,Ltd.,Shanghai 201800,China;School of Internet of Things Engineering,Jiangnan University,Wuxi 214000,China)

机构地区：[1]上海华东送变电工程有限公司,上海201800 [2]江南大学物联网工程学院,江苏无锡214000

出　　处：《通信电源技术》2020年第21期80-83,共4页Telecom Power Technology

摘　　要：电力系统中的电流有效测量是必不可少的检测环节,如何测量可以使测量结果更为接近真实值成为一个至关重要的问题。通过分析当前电流有效值的普遍测量方法,然后搭建了一种电流真效值检测电路,并设计了一种针对电压波动的卡尔曼滤波器。通过实验检测不同的波形真有效值,验证设计方法在电流真有效值检测方面的有效性和准确性,为电力系统中的电流有效值检测提供了可靠的方法,具有广阔的市场应用前景。Effective measurement of current in power system is an essential element.How to make the measurement result closer to the real value has become a crucial problem.In this paper,a general method for measuring current RMS is analyzed.Then,a current true-RMS detection circuit is built,and a Kalman filter is designed to deal with the fluctuation of voltage.Different waveform true RMS values are tested experimentally.The validity and accuracy of the proposed method in detecting the true effective value of current are verified by experiments.It provides a reliable method for detecting current RMS in engineering,especially in power system,and has a broad market application prospect.

关 键 词：电力系统 电流有效测量 真有效值 电压波动 卡尔曼滤波器 

分 类 号：TM7[电气工程—电力系统及自动化]