地磁感应电流在三相电力变压器绕组中的流通路径分析
发布时间：2019-04-22 12:29
【摘要】：通过构建计及地磁感应电流(GIC)影响的交流系统仿真模型,研究了在不同运行条件下,GIC在Yg-Y接线与Yg-△接线变压器中GIC流通路径的特征。研究结果表明,在变压器三相绕组不对称饱和情况下,GIC在变压器三相绕组中非均匀分布,同时由于GIC的低频变化特征,GIC可能传变至变压器Y(△)侧,对继电保护系统的可靠运行产生影响。
[Abstract]:By constructing a simulation model of AC system considering the influence of geomagnetic induction current (GIC), the characteristics of GIC flow path of GIC in Yg-Y connection and Yg- connection transformer under different operating conditions are studied. The results show that under the condition of asymmetrical saturation of transformer three-phase windings, GIC is unevenly distributed in transformer three-phase windings. At the same time, due to the low frequency variation of GIC, GIC may be transferred to the Y () side of transformer. It has influence on the reliable operation of relay protection system.
【作者单位】： 华北电力大学新能源电力系统国家重点实验室;中国电力科学研究院;
【分类号】：TM41
，
本文编号：2462837
[Abstract]:By constructing a simulation model of AC system considering the influence of geomagnetic induction current (GIC), the characteristics of GIC flow path of GIC in Yg-Y connection and Yg- connection transformer under different operating conditions are studied. The results show that under the condition of asymmetrical saturation of transformer three-phase windings, GIC is unevenly distributed in transformer three-phase windings. At the same time, due to the low frequency variation of GIC, GIC may be transferred to the Y () side of transformer. It has influence on the reliable operation of relay protection system.
【作者单位】： 华北电力大学新能源电力系统国家重点实验室;中国电力科学研究院;
【分类号】：TM41
，
本文编号：2462837
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