高压电器Issue(12)：162-167,6.DOI:10.13296/j.1001-1609.hva.2015.12.028
换流变压器改进型套管电场仿真及绝缘试验分析
Electric Field Simulation and Insulation Test for the Improved Bushing on the Converter Transformer
黎卫国 1张长虹 1夏谷林 1卢文浩 1何平 2孙优良3
作者信息
- 1. 南方电网超高压输电公司检修试验中心，广州 510663
- 2. 南京电气集团有限责任公司，南京 210038
- 3. 保定天威保变电气股份有限公司，河北 保定 071056
- 折叠
摘要
Abstract
The poor design of insulation and the slight defect of process lead to the explosions of the China Southern Power Grid’s 3 grid side bushings in recent years. Therefore, the converter transformer’s bushings have been modified. According to the improved bushing’s below length, cross-sectional area and diameter of grounded flange have been changed significantly, and in order to install the improved bushing into the original interface successfully, the bushing’s ascending flange and current transformer are redesigned in this paper. The two-dimensional axial symmetry models of the bushing and bushing’s ascending flange are given by ANSYS, and the potential distributions of bushing and bushing’s ascending flange are studied. Finally, the improved bushing’s insulation performances are tested. The results of simulation and test show that the new bushing has superiority in terms of insulation performance. The improved bushing and bushing’s ascending flange are running reliably, and the improved bushing have never occurred any insulation fault as yet, therefore, the improvement measures for the bushing are effective. The improvement measures play a guiding role in transformation of the same type of bushings in other HVDC projects.关键词
换流变压器/改进型套管/升高座/有限元法/电场仿真/绝缘试验Key words
converter transformer/improved bushing/bushing’s ascending flange/finite element method/electric field simulation/insulation test引用本文复制引用
黎卫国,张长虹,夏谷林,卢文浩,何平,孙优良..换流变压器改进型套管电场仿真及绝缘试验分析[J].高压电器,2015,(12):162-167,6.
