摘要随着科学技术的进步,电力系统运行电压等级不断提升且容量日渐扩大,传统意义上的电磁式互感器的缺陷日益显露,无法满足电力系统朝着智能化方向发展的需求。在此情况下,研究发展方向逐渐转向具有无饱和、精度好、高绝缘等优点的新型电子式互感器。在众多种类的互感器中,本文主要研究的是 Rogowski 型电子式电流互感器,它是一种被广泛使用的有源式电子式互感器。
本文首先分析了传统电磁式互感器的缺陷以及相比较之下新型电子式互感器所具有的优良特性,并介绍了本文的研究背景、意义以及电子式互感器目前的研发状况。然后对电子式互感器的定义、分类以及原理作了阐述。接着对 Rogowski型电子式电流互感器进行重点介绍,在分析了其工作原理的基础上,构建模型,利用Matlab进行软件仿真,研究其频率特性。 26720
毕业论文关键词 电子式互感器 Rogowski线圈 频率特性 仿真
Title THE PRINCIPLE AND APPLICATION OF ELECTRONIC TRANSFORMER
Abstract
With the obvious improvement of transmission capacitance and rated voltage in
power system, conventional electromagnetic transformers have several drawbacks
and have been already difficult to meet the need that network develop towards
automation and digitized direction. The electronic transformer has become a new
direction of transformers' development for its no saturation under fault
conditions,high precision and high level insulation. This paper is about active
electronic transformers: electronic current transformers based on Rogowski coil.
In the beginning, the facing problem of traditional electromagnetic
transformers and the advantage of electronic transformers are introduced in
this paper, the research background and significance of this article are
analyzed and the present actuality of electronic transformers is summarized.
Then this paper introduces the definition, classification and principle of
electronic transformers. After that, the Rogowski electronic current transformer
are highly introduced, then build a model after analyzing the working principles
and use Matlab software to emulate in order to research the frequency
characteristics.
Keywords Electronic transformer; Rogowski coil; Frequency characteristic; Simulation
目 次
1 引言 .. 1
1.1 电子式互感器的研究背景和意义 . 1
1.2 电子式互感器的研究发展情况 .. 3
1.3 电子式互感器的发展应用前景和面临的主要问题 4
1.4 本课题的主要工作 . 4
2 电子式互感器概述 .. 6
2.1 电子式互感器的定义 6
2.2 电子式互感器的一般结构 . 6
2.3 电子式互感器的分类以及对比 .. 7
2.4 本章小结 .. 9
3 Rogowski 线圈电子式电流互感器结构与原理 .. 10
3.1 Rogowski 线圈的分类 10
3.2 Rogowski 电流互感器总体结构 .. 10
3.3 Rogowski 电流互感器工作原理 .. 12
3.4 Rogowski 线圈的优点和不足之处 . 12
3.5 Rogowski 线圈测量原理 .. 13
3.6 Rogowski 线圈等效电路及频率特性 14 电子式互感器原理及应用 :http://www.youerw.com/zidonghua/lunwen_20985.html