摘要
全光纤电流互感器(FOCT)理论上具有优异的谐波测量性能,但闭环控制系统以及数据处理方法限制了其测量带宽。分析了FOCT传递函数的组成,给出了系统幅频特性与相频特性的表达公式。结合电力谐波测量的要求,设计了FOCT系统主要参数并进行仿真。提出快速闭环、带宽稳定等关键技术,研制了高频测量FOCT样机。实验结果表明,在50 Hz^2 500 Hz谐波电流下,样机测量误差小于3.28%,满足电力系统电能品质测量的需求。研究结果为FOCT在电力领域宽频测量、谐波测量等应用提供参考意见。
Fiber optic current transformer （FOCT） has excellent performance in harmonic measurement, but the closed loop control system and data processing method limit the bandwidth of the measurement system. In this paper, the composition of the FOCT transfer function is analyzed, and the expression formulas of the amplitude -frequency and phase - frequency characteristics of the system are given. According to the requirements of power harmonic measurement, the main parameters of FOCT system are designed and the simulation is carried out. The key technologies such as the fast closed loop and bandwidth stability are proposed, and the prototype of high frequency measurement FOCT is developed. The experimental results show that measurement error is less than 3.28% under the harmonic current with frequency ranged from 50 Hz to 2 500 Hz, which can meet the requirements of power quality measurement in power system. The research results provide a reference for the application of FOCT in the field of wide band measurement and harmonic measurement.
作者
王宇
鲁彩江
高吉普
徐长宝
徐知芳
刘东伟
WANG Yu LU Caijiang GAO Jipu XU Changbao XU Zhifang LlU Dongwei(Guizhou Electric Power Research Institute of Guizhou Power Grid Co. Ltd. , Guiyang 550002, Chlna Enerxy Qianyuan （Beijing） Electric Power Technology Co. Ltd. , Beijing 100093, China)
出处
《电力科学与工程》
2016年第12期43-48,共6页
Electric Power Science and Engineering
关键词
全光纤电流互感器
传递函数
谐波传变特性
带宽
品质测量
FOCT
transfer function
harmonic transmission characteristics
bandwidth
quality measurement
