Analysis of PT Core Loss Effects on Ferroresonance

DU Zhi-ye; RUAN Jiang-jun; WANG Wei-gang

您当前的位置：

首页 >

文章列表页 >

Analysis of PT Core Loss Effects on Ferroresonance

更新时间：2025-04-26

- Analysis of PT Core Loss Effects on Ferroresonance
- High VoltageApparatus Issue 4, Pages: 257-259+264(2005)
- 作者机构：
  
  1. 武汉大学电气工程学院
  2. 武汉大学电气工程学院湖北武汉430072
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM863
- Published：2005
- 稿件说明：
移动端阅览
[1]杜志叶,阮江军,王伟刚.PT铁损对铁磁谐振的影响分析[J].高压电器,2005(04):257-259+264.

DU Zhi-ye, RUAN Jiang-jun, WANG Wei-gang. Analysis of PT Core Loss Effects on Ferroresonance[J]. High voltageapparatus, 2005, (4): 257-259+264.
[1]杜志叶,阮江军,王伟刚.PT铁损对铁磁谐振的影响分析[J].高压电器,2005(04):257-259+264. DOI：

DU Zhi-ye, RUAN Jiang-jun, WANG Wei-gang. Analysis of PT Core Loss Effects on Ferroresonance[J]. High voltageapparatus, 2005, (4): 257-259+264. DOI：

摘要

通过实测PT的参数

采用最小二乘曲线拟合的方式确定PT模型的特征曲线和铁损。分别对中性点直接接地系统和不直接接地系统的铁磁谐振现象进行分析

从理论上证明了PT的铁损对铁磁谐振的阻尼作用。利用MATLAB分别对两种系统进行仿真

研究在不同的谐振条件下

PT铁损的变化对谐振的影响。仿真结果表明

在各个谐振区域

这种影响都存在。PT的铁损越小

谐振越容易发生

产生的过电压越高

持续时间越长

这在中性点直接接地系统中尤为显著。仿真结果同理论分析相吻合。

Abstract

The characteristic parameters of PT are calculated by processing the test data in the least squares curve fitting methods. Based on equivalent model of PT

this paper analyzes the reduced equivalent circuits to the power system with earthed and non-earthed neutral respectively. The act of PT core loss on damping ferroresonance intensity and persistence is proved theoretically. The simulating tool of MATLAB is then applied to calculate the effects in both systems

which are caused by changing core loss of PT at different condition of ferroresonance. From the results

it is shown that the influence exists under all of the conditions and is more remarkable in the earthed neutral power system. The lower the core loss is

the intenser the resonance is

the higher the value of overvoltage caused is. The results are in good agreement with the analysis concluded in theory. It is also helpful to design suitable equipment for suppressing resonance in different types of power system.

关键词

Keywords

references

Views

179

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Influence of Capacitive Coupling between Busbars on Ferroresonance

Study on the Computer Simulation of Ferroresonance Overvoltage in 10kV Distribution System

Analysis of the Fundamental Ferroresonance of Neutral Grounded Power System and the Experimental Validation

The Lectotype of CVT in UHV AC Pilot Demonstration Project

Impact of Neutral Grounding Mode on Ferroesonance in 35 kV Power System

Related Author

SHI Wei

LI Yun-ge

SHI Wei

LI Wen-yi

WANG Liang

DU Xiao-lei

LU Tie-cheng

ZHANG Bo

Related Institution

西安交通大学陕西西安710049

Xi’an Jiaotong University

西安交通大学电气工程学院陕西西安710049

School of Electrical Engineering,Xi’an Jiaotong University

State Grid Electric Power Research Institute

⁰