塑料绝缘直流高压电缆中空间电荷测量技术的研究

zhaogy2006

摘要:同轴型电缆空间电荷测量系统与片状试样空间电荷测量系统在测试原理上是基本一致的，但是有其特
2 Y2 B+ K- D4 Z殊性。在分析同轴型直流塑料电缆的衰减和色散特性、脉冲电场耦合方式以及电极系统的基础上，研发出同
) n6 t, k8 a' g+ P轴型直流塑料电缆空间电荷测量系统。利用此测量系统测量了某直流塑料电缆在24 h 冷热循环条件下的空
. Q. ~5 f7 e0 m: Y& U间电荷分布情况。直流塑料电缆空间电荷测量系统的成功研制对我国直流塑料电缆的研究具有十分重要的
% c+ p% m& U7 s. X% t1 S* N价值。
关键词:直流电缆;空间电荷;同轴型电缆;冷热循环
中图分类号:TM247． 1 文献标识码:A 文章编号:1672-6901(2011)03-0022-04
Research of Space Charge Measurement Polymer-Rinsulated HVDC Cable
WU Qinag ，et al
(Shanghai Jiaotong University，Department of Electronic and Electrical Engineering，Shanghai 200240，China)
4 t! k0 O, i2 o4 l3 UAbstract: The space charge measurement system for coaxial cable is different from the one for flat sample，although
9 N8 {! ]3 k, A: l* x' u7 X. Jthe principle of both measurement systems is the same． Based on the analysis of attenuation and disperse，coupling
. v* r$ v; q* a* ostyle of impulse electric field and electrode system，the space charge measurement system for coaxial DC polymeric
+ |5 `  b4 W  `1 Z8 f$ }cable，by which the space charge distribution of one de polymeric cable has been measured under the case of 24 h
cold after hot，and the result is reliable． The space charge measurement system of DC polymeric cable is valuable for
the research of DC polymeric cable in China．
) O% X9 S9 h) k. oKey words: DC cable; space charge; coaxial cable