HV Transformer Protection and Stabilization under Geomagnetically Induced Currents

被引:3
|
作者
Bejmert, Daniel [1 ]
Boehme, Klaus [2 ]
Kereit, Matthias [2 ]
Rebizant, Waldemar [1 ]
机构
[1] Wroclaw Univ Sci & Technol, Fac Elect Engn, PL-50370 Wroclaw, Poland
[2] Siemens AG, D-13629 Berlin, Germany
关键词
power transformer; differential protection; protection stabilization; geomagnetically induced current; geomagnetic disturbance;
D O I
10.3390/en13184693
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
This paper presents the results of research related to the issues arising from DC excitation of power transformers due to geomagnetically induced currents (GIC). First, the GIC phenomena and their influence on power system operation are discussed. Then, a recorded case of tripping of the transformer differential protection due to geomagnetic disturbances (GD), as well as simulation signals from a developed model of a transformer subjected to a GD are analyzed. Next, two algorithms for GIC detection utilizing the rate of change of transformer differential currents and the DC component in the neutral current are proposed, thoroughly tested, and recommended.
引用
收藏
页数:13
相关论文
共 50 条