1) DC-bias magneticfied
直流偏磁式
2) DC bias
直流偏磁
1.
Research on Dc Biased Transformers Caused by HVDC or Geomagnetic Storm;
直流输电和磁暴引起变压器直流偏磁的相关研究
2.
Calculation and study for three-phase DC bias of converter transformer
换流变压器三相直流偏磁的计算研究
3.
Study of vibration of transformers under DC bias
变压器直流偏磁的振动特性研究
3) DC biasing
直流偏磁
1.
DC biasing can cause transformers noise increasing,vibration intensified,local overheating and even damaged.
直流偏磁会导致变压器噪音增大、振动加剧,可能引起变压器局部过热甚至损坏。
2.
The enormous ground return current caused by HVDC (high voltage direct current) system s mono-pole ground return operation mode will result in the main transformer DC biasing at the substations near the ground electrode, thus it has disadvantageous effect on AC (alternative current) system.
高压直流输电系统单极大地回线方式运行时,巨大的入地电流将会使接地极附近的变电站主变压器产生直流偏磁,对交流系统造成不利影响。
3.
The mechanism of DC biasing for output transformer of SPWM switching converter was analyzed.
分析了SPWM开关型变换器中输出变压器产生直流偏磁的机理。
4) DC magnetic bias
直流偏磁
1.
Influence of DC magnetic bias on excitation current of transformer;
直流偏磁对换流变压器励磁电流的影响
2.
The authors research such existing technical problems as electromagnetic environment, over-voltage and insulation coordination, DC magnetic bias, control and protection system, stability of hybrid UHVAC/DC power grid.
讨论了我国±800kV特高压直流输电工程的电磁环境、过电压与绝缘配合、直流偏磁、控制保护系统、特高压交直流混合电网的稳定性等方面存在的技术问题。
3.
HVDC from Tianshengqiao power station to Guangzhou and that from Three Gorges power station to Changzhou, the DC magnetic bias of large capacity power transformers occurs under monopole operation mode with earth return.
我国天(生桥)—广(州)、三(峡)—常(州)等直流工程单极大地回路运行时均出现了直流偏磁问题,只在电流超标的变压器中性点安装抑制装置不能从根本上解决该问题。
5) DC bias magnetization
直流偏磁
1.
Experimental studies and calculations of the exciting current in the transformer under DC bias magnetization;
直流偏磁下变压器励磁电流的实验研究及计算
2.
The phenomenon of direct current components of flux and exciting current arising in a power transformer is called DC bias magnetization.
造成振动的直接原因就是变压器的直流偏磁现象。
6) DC magnetic biasing
直流偏磁
1.
Harmonic analysis and tackling of transformer under DC magnetic biasing;
变压器发生直流偏磁时的谐波分析和治理
2.
While the HVDC run in monopole to ground operation, Current in the earth make the transformer that have different potential bring DC magnetic biasing.
因此,变压器直流偏磁问题是需要研究的课题。
3.
It is studied that the power transformers’DC magnetic biasing in this dissertation.
本文结合电力变压器的直流偏磁运行情况,进行了研究,电力系统变压器直流偏磁问题是十分复杂的问题,这一研究涉及电力系统的简化、三维非线性电磁场的数值计算问题。
补充资料：高偏磁盒式录音磁带
分子式：
CAS号：
性质：即IEC-II型磁带。是指使用钴改性γ-Fe2O3或CrO2磁粉生产的磁带，其矫顽力比IEC-Ⅰ型磁带约高1倍。由于采用了比IEC-Ⅰ型磁带小的均衡时间常数(70μs)，其高频噪声电平比I型带约低4dB，高频动态范围大，能再现各种乐器的音色和音域深广的空间。该型磁带有音乐型、高级型和超高级型等3种。
CAS号：
性质：即IEC-II型磁带。是指使用钴改性γ-Fe2O3或CrO2磁粉生产的磁带，其矫顽力比IEC-Ⅰ型磁带约高1倍。由于采用了比IEC-Ⅰ型磁带小的均衡时间常数(70μs)，其高频噪声电平比I型带约低4dB，高频动态范围大，能再现各种乐器的音色和音域深广的空间。该型磁带有音乐型、高级型和超高级型等3种。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条