[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]
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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.

[2] 张冰,刘连光.地磁感应电流对变压器振动、噪声的影响[J].高电压技术,2009,35(4):900-904.
[3] 钟连宏,陆培均.直流接地极电流对中性点直接接地变压器影响[J].高电压技术,2003,29(8):12-13.
[4] Ding Hui,Han Minxiao.User-defined HYDC Reactive Power Control Modeling for System Stability Studies In PSASP[C]. Hongkong:Proceedings of IEE APSC0M2006, 2006.
[5] Ding Hui,Han Minxiao.Detailed Modeling of China-Russia Heihe Back-to-Back HVDC Project Using PSCAD/EMTDC [C].The Proceedings of 3rd International Conference on DRPT NanJlng,2008.
[6] 赵杰,黎小林.抑制变压器直流偏磁的串接电阻措施[J].电力系统自动化,2006,30(12):88-91.
[7] 黄甫成,阮红军.变压器直流偏磁的仿真研究及限制措施[J].高电压技术,2006,32(9):117-120.

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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。
更新日期/Last Update: 2018-08-15