电子式电流互感器宽频电流传感技术研究

发布时间：2018-01-10 22:01

本文关键词：电子式电流互感器宽频电流传感技术研究　出处：《中原工学院》2017年硕士论文　论文类型：学位论文

【摘要】：目前国家经济取得长足进步,中国的电网建设正向大容量、特高压方向进展,对电网系统中的检测装置的要求越来越高,常规的电磁式互感器出现不能克服的缺点,已经满足不了对大容量高频电流的检测要求,为了与电力行业发展同步,需要研发新型的传感器。目前电子式互感器在检测精度方面提升了很多,并且对大电流的检测范围变宽,造价低,体积小,抗干扰性提高等,诸多优点实现了全面提升,已是发展的必然趋势。本文首先对研究课题的背景及意义作了讨论,论述了电子式互感器的研究概况,对电子式互感器的检测原理进行了研究,从理论上描述了包括圆形和方形骨架截面互感器的测量原理,对互感器的两种不同的工作状态进行了对比分析。对影响测量结果的几个重要因素做了分析,主要包括匝数、线径、骨架截面及骨架长度等,通过仿真计算分析,对设计参数优化,得出最优设计参数。其次本论文主要优化了电流互感器的设计流程,包括设计原则,结构设计,设计参数分析,制作材料选取,对在设计互感器过程中出现的误差进行了分析。本文实验对象包括三种不同骨架截面的电流互感器实验设备包括冲击电流试验仪、电流互感器、高精度示波器等,本论文主要目的是通过实验采集信号,从示波器中采集数据,通过MATLAB软件对数据进行对比,分析三种不同骨架截面互感器的测量结果,分析互感器的线性度,拟合度及灵敏度,分析对比三种互感器的测量结果,选出最优的设计方案。最后对本论文的总结和展望,对工作中出现的不足进行了说明,提出了对工作中出现问题的解决方式。
[Abstract]:At present, the national economy has made great progress, the construction of power grid in China is developing towards large capacity and UHV, and the requirement of detecting devices in power grid system is becoming higher and higher. Conventional electromagnetic transformers can not overcome the shortcomings, has not been able to meet the high frequency current detection requirements for large capacity, in order to synchronize with the development of the power industry. Need to develop a new type of sensor. At present, the electronic transformer in the detection accuracy has improved a lot, and the detection range of large current becomes wider, low cost, small volume, improved anti-jamming and so on. It is an inevitable trend of development that many advantages have been realized. Firstly, this paper discusses the background and significance of the research topic, and discusses the general situation of the research on electronic transformers. The detection principle of electronic transformers is studied, and the measuring principle of circular and square frame cross-section transformers is described theoretically. Two different working states of the transformer are compared and analyzed. Several important factors affecting the measurement results are analyzed, including turn number, line diameter, skeleton section and skeleton length. Through simulation calculation and analysis, the optimal design parameters are obtained. Secondly, this paper mainly optimizes the design process of current transformer, including design principles, structure design, design parameters analysis. The error occurred in the process of designing transformer is analyzed. The experimental objects include three kinds of experimental equipment of current transformer with different skeleton sections including impulse current tester and current transformer. High precision oscilloscope and so on, the main purpose of this paper is to collect signals through experiments, collect data from oscilloscopes, and compare the data with MATLAB software. The measurement results of three kinds of cross-section transformers with different skeletons are analyzed, the linearity, fitting degree and sensitivity of the transformers are analyzed, and the measurement results of the three kinds of transformers are analyzed and compared. Finally, the conclusion and prospect of this paper are given, the shortcomings in the work are explained, and the solutions to the problems in the work are put forward.
【学位授予单位】：中原工学院
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM452

【相似文献】