特高压室内直流场PLC电抗器屏蔽电极的优化设计

Yiyu Guo, Zichen Zhao, Wei Zhang, Guohua Yan, Yongjie Li, Zongren Peng
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引用次数: 0

摘要

电抗器是由分段级配环、支撑绝缘子、法兰、绕组线圈等组成的室内直流场塔式过滤设备。与室外直流场站相比,室内直流场站由于过滤设备布置紧凑,以及屋顶和墙壁的接地电位,对屏蔽装置的均匀电场要求更为严格。因此,有必要对PLC电抗器分级环的电位和电场分布特性进行分析。本文建立了±1100kV室内直流院子的原始模型,并用有限元法对其进行了分析。采用参数化建模方法,计算了不同分级环结构参数下PLC反应器表面电场分布。根据计算结果,调整了结构参数,采用了锭子式分级环布置。优化后的分级环最大表面场强满足控制值1.2kV/mm。计算结果可为特高压直流PLC电抗器的设计提供有价值的参考。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Optimization Design on Shielding Electrodes for PLC Reactor in UHV Indoor DC yard
PLC (Power Line Carrier) reactor is a tower-type filter equipment in indoor DC yard consisting of segmental grading ring, supporting insulators, flange, winding coil and so on. Comparing with outside DC yard, indoor DC yard has stricter requirements to uniform electric field for shielding device, due to the compact layout of filter equipment and grounding potential of roof and wall. So, it is necessary to analyze the characteristic of potential and electric field distribution of grading ring of PLC reactor. In this paper, an original ±1100kV indoor DC yard model is built and analyzed with finite element method. The parametric modeling method is used to calculate the surface electric field distribution on the surface of PLC reactor with different structure parameters of grading ring. According to the calculation results, the structure parameters were adjusted and adopted spindle-type arrangement of grading ring. After the optimization, the maximum surface field strength of the grading ring meet the control value 1.2kV/mm. The calculation results could provide valuable references for the design of UHVDC PLC reactor.
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