EVALUATING THE EFFECT OF GEOINDUCED CURRENTS ON THE STARTUP MODES OF POWER TRANSFORMERS1

Yu. P. Gusev; A. Lkhamdondog; Yu. V. Monakov; N. V. Yagova; V. A. Pilipenko

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EVALUATING THE EFFECT OF GEOINDUCED CURRENTS ON THE STARTUP MODES OF POWER TRANSFORMERS1

机译：评估Geo诱导电流对电力变换器启动模式的影响

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Results are presented from a study of the influence on the startup modes of transformers of sign-constant currents in the windings of power transformers that may be related to geomagnetic perturbations in the earth's magnetosphere and ionosphere and to electromagnetic processes in electric power systems. Magnetization processes in power transformers produced by geoinduced currents (GIC) with hysteresis taken into account are analyzed. A computational study is based on a model of a segment'of the 500 kV grid using the EMTP-RV program (PowerSys, France) which can be used for calculations of transient processes in nonlinear electrical circuits with hysteresis taken into account. It is argued that GIC must be taken into account in calculations of the thermal and electrodynamic stability of transformers when choosing the settings for relay protections.

机译：结果是从对电力变压器绕组绕组绕组绕组的变压器的启动模式的研究中提出的，这可能与地球磁层和电离层的地磁扰动以及电力系统的电磁过程有关。分析了通过地磁电流（GIC）产生的电力变压器中的磁化过程，考虑到滞后。计算研究基于使用500 kV网格的段的模型，该模型使用EMTP-RV程序（PowerSys，法国），其可用于计算非线性电路中的瞬态过程，其中滞后于考虑滞后。有人认为，在选择用于继电保护的环境时，必须考虑到变压器的热电动力和电动稳定性的计算。

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来源
《Hydrotechnical Construction》 |2020年第2期|285-290|共6页
作者
Yu. P. Gusev; A. Lkhamdondog; Yu. V. Monakov; N. V. Yagova; V. A. Pilipenko;
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作者单位

National Research University 'Moscow Power Engineering Institute ' Moscow Russia;

National Research University 'Moscow Power Engineering Institute ' Moscow Russia;

National Research University 'Moscow Power Engineering Institute ' Moscow Russia;

National Research University 'Moscow Power Engineering Institute ' Moscow Russia;

O. Yu. Schmidt Institute of Physics of the Earth Russian Academy of Sciences Moscow Russia;

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原文格式 PDF
正文语种 eng
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关键词
power transformers; sign-constant current; geoinduced current; saturation of magnetic circuit; hysteresis;

机译：电力变压器;符号恒定电流;地致电流;磁路饱和;滞后;

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EVALUATING THE EFFECT OF GEOINDUCED CURRENTS ON THE STARTUP MODES OF POWER TRANSFORMERS1

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