[1]殷培峰,张婧瑜.基于交直流互联电网中变压器直流偏磁抑制技术的应用[J].工业仪表与自动化装置,2018,(04):123-126.[doi:1000-0682（2018）04-0000-00]
　YIN Peifeng,ZHANG Jingyu.The application of the DC bias restraining technology for the transformer under AC/DC interconnected power grid[J].Industrial Instrumentation & Automation,2018,(04):123-126.[doi:1000-0682（2018）04-0000-00]

点击复制

基于交直流互联电网中变压器直流偏磁抑制技术的应用

《工业仪表与自动化装置》[ISSN:1000-0682/CN:61-1121/TH]

卷:

期数:

2018年04期

页码:

123-126

栏目:

出版日期:

2018-08-15

文章信息/Info

Title:

The application of the DC bias restraining technology for the transformer under AC/DC interconnected power grid

作者:

殷培峰; 张婧瑜

兰州石化职业技术学院，兰州 730060

Author(s):

YIN Peifeng;  ZHANG Jingyu

(Lanzhou Petrochemical Polytechnic, Lanzhou 730060,China

关键词:

交直流互联电网; 变压器; 直流偏磁; 直流抑制装置; 中性点接地; 谐波分量

Keywords:

AC/DC interconnected power grid;  transformer;  DC bias;  DC suppression device;  neutral grounding;  harmonic component

分类号:

TM451+.2

DOI:

1000-0682（2018）04-0000-00

文献标志码:

A

摘要:

在高压直流输电系统中，单极运行或双极不平衡运行方式时，大地中直流对电网中的变压器直流偏磁产生严重影响，使电力系统中主变压器铁芯易饱和、漏磁增大、产生较大的谐波电流，导致变压器温度过高而损坏、电力系统电压下降、继电保护误动作等，因此对交直流互联电网中受端电网的直流偏磁应予充分重视，通过电容器抑制法、反向电流法、变压器中性点接小电阻法等，尽可能消除直流偏磁对电力系统稳定性运行的危害。

Abstract:

While the HVDC systems run in monopole or bipolar imbalance operation, Current in the earth have a strong impact on the DC bias of the transformer in the power grid. The phenomenon makes the main transformer core can be easier saturated, and the leakage flux and harmonic current will be increase. All of these cases can lead to the damage of the transformer due to much high temperature, the voltage down of the power system and misoperation of the relay protection. Therefore, DC bias of the receiving end power grid should be adequate attention under AC/DC interconnected power grid. In this paper, how to eliminate hazard of the DC bias for the operation stability of power system is discussed using the capacitor rejection method, the current-reversal method and the low resistance on transformer neutral point method.

参考文献/References:

[1] 赵婉君.高压直流输电工程技术[M].北京:中国电力出版社,2004.

相似文献/References:

[1]朱姝伟,张稳娥.变压器的常见故障及保护[J].工业仪表与自动化装置,2013,(05):87.
[2]赵建利,张鹏,侯英洒,等.绝缘结构对油浸式变压器绝缘纸含水量测试结果的影响研究[J].工业仪表与自动化装置,2016,(03):122.
　Zhao Jianli,Zhang Peng,Hou Yingsa,et al.Study on the effect of insulation structure to insulation paper water test results of oil immersed transformer[J].Industrial Instrumentation & Automation,2016,(04):122.
[3]张 鑫,王 衡,卫永鹏,等.基于SSA-PNN的电力变压器故障诊断[J].工业仪表与自动化装置,2022,(01):86.[doi:10.19950/j.cnki.cn61-1121/th.2022.01.018]
　ZHANG Xin,WANG Heng,WEI Yongpeng,et al.Fault diagnosis of power transformer based on SSA-PNN[J].Industrial Instrumentation & Automation,2022,(04):86.[doi:10.19950/j.cnki.cn61-1121/th.2022.01.018]
[4]姬建富,刘宏伟,侯云飞,等.基于温度传感器的变压器冷却风机运行状态在线监控方法[J].工业仪表与自动化装置,2022,(04):80.[doi:10.19950/j.cnki.cn61-1121/th.2022.04.016]
　JI Jianfu,LIU Hongwei,HOU Yunfei,et al.On line monitoring method of transformer cooling fan operation state based on temperature sensor[J].Industrial Instrumentation & Automation,2022,(04):80.[doi:10.19950/j.cnki.cn61-1121/th.2022.04.016]
[5]刘延超,翟常营,洪序平,等.核电站变压器智能冷却监控系统设计研发[J].工业仪表与自动化装置,2022,(05):84.[doi:10.19950/j.cnki.cn61-1121/th.2022.05.016]
　LIU Yanchao,ZHAI Changying,HONG Xuping,et al.Design and development of intelligent cooling monitoring system for nuclear power station transformer[J].Industrial Instrumentation & Automation,2022,(04):84.[doi:10.19950/j.cnki.cn61-1121/th.2022.05.016]

备注/Memo

备注/Memo:

收稿日期：2017-01-05

基金项目：兰州石化职业技术学院教育教学研究基金项目(JY2014-21)

作者简介：殷培峰(1967)，男，甘肃临洮人，教授，研究方向为电气自动化。

常用功能