VFTO下分段层式变压器线圈电位分布研究

doi:10.11930/j.issn.1004-9649.2012.4.42.4

中国电力 ›› 2012, Vol. 45 ›› Issue (4): 42-46.DOI: 10.11930/j.issn.1004-9649.2012.4.42.4

VFTO下分段层式变压器线圈电位分布研究

窦玉雷¹, 蒋中杰¹, 王亚军², 薛志英³

1.四川省电力公司眉山公司,四川眉山 620010;
2.河北省电力调度中心,河北石家庄 050019;
3.华北电力大学,北京 102206

收稿日期:2011-11-06 修回日期:2012-01-25 出版日期:2012-04-18 发布日期:2016-02-29
作者简介:窦玉雷（1979- ）,男,河北沧州人,工程师,从事电力系统分析运行与控制、高压电器在线检测与故障诊断方面的研究工作。

Research on potential distribution in transformer with subsection and layer windings under VFTO

DOU Yu-lei, JIANG Zhong-jie, WANG Ya-jun, XUE Zhi-ying

1. Meishan Company of Sichuan Electric Power Corporation, Meishan 620010,China;
2.Electric Power Dispatching Center of Hebei, Shijiazhuang 050019,China;
3. North China Electric Power University, Beijing 102206, China

Received:2011-11-06 Revised:2012-01-25 Online:2012-04-18 Published:2016-02-29

摘要/Abstract

摘要： 特快速暂态过电压（VFTO）作用下分段层式变压器线圈的电位分布计算对于变压器的绝缘设计是非常重要的。由于GIS中开关投切产生的陡波前过电压对变压器的绝缘危害极大,为了准确计算线圈中的快速暂态过程,提出了一种以单层线圈为单元的集总参数线圈模型,介绍了电感、电容、电阻等参数计算的物理模型和数学公式。实测和计算1台变压器线圈模型电位分布的结果近似一致,说明集总参数线圈模型和计算方法是正确可行的,可以为变压器线圈合理的绝缘设计提供理论依据。

关键词: 特快速暂态过电压, 变压器线圈, 集总参数, 电位分布

Abstract: It is very important for transformer insulation design to calculate winding potential distribution of the transformer with subsection and layer winding under VFTO (Very Fast Transient Over-voltage). VFTO generated by GIS switchgear switching is very harmful to transformer insulation. In order to accurately simulate the very fast transient process in the winding, a lumped parameter model with single layer winding unit is proposed. Physical model and math formula for the calculation of inductance, capacitance and resistance parameters are introduced. The consistency between simulation and measurement results in an actual transformer winding verifies the correctness of proposed model, which provides theoretical basis for transformer winding insulation design.

Key words: very fast transient over-voltage（VFTO）, transformer with subsection and layer winding, lumped parameter model, potential distribution

中图分类号:

TM406

窦玉雷, 蒋中杰, 王亚军, 薛志英,. VFTO下分段层式变压器线圈电位分布研究[J]. 中国电力, 2012, 45(4): 42-46.

DOU Yu-lei, JIANG Zhong-jie, WANG Ya-jun, XUE Zhi-ying. Research on potential distribution in transformer with subsection and layer windings under VFTO[J]. Electric Power, 2012, 45(4): 42-46.

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https://www.electricpower.com.cn/CN/Y2012/V45/I4/42

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VFTO下分段层式变压器线圈电位分布研究

Research on potential distribution in transformer with subsection and layer windings under VFTO

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VFTO下分段层式变压器线圈电位分布研究

Research on potential distribution in transformer with subsection and layer windings under VFTO

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