地磁感应电流引起的电力系统谐波畸变分析

IF 3.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Electric Power Systems Research Pub Date : 2025-05-13 DOI:10.1016/j.epsr.2025.111831

Z.M. Khurshid , M. Z. A. Ab Kadir , N. F. Ab Aziz , Z.A. Rhazali , N. Azis

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引用次数: 0

摘要

在地磁干扰（GMD）期间，通过电力变压器的地磁感应电流（gic）会导致无功功率需求增加，电压稳定性问题，以及由于变压器半周期饱和导致的系统中显著的谐波失真。变压器中的谐波含量因铁芯类型、气路磁通和变压器结构而异。这些影响最终会影响系统中电力传输的质量和可靠性。本文研究了马来西亚电网中不同类型变压器的小规模系统在GIC事件下的谐波畸变。利用电力系统计算机辅助设计（PSCAD）软件建立了仿真模型，并计算了不同GIC值下的仿真结果。结果表明，由于集成电路引起的变压器饱和会在系统中产生高水平的谐波，并急剧增加无功损耗。通过与500kv母线连接的静态无功补偿器（SVC）观察到电流波形的最坏情况谐波。在此基础上，对行业和系统运营商提出了建议，以减轻GMD事件期间的谐波及其影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Harmonic distortion analysis in power system due to geomagnetically induced currents

Geomagnetically induced currents (GICs) flowing through power transformers during geomagnetic disturbances (GMD) can cause increased reactive power demands, voltage stability issues, and significant harmonic distortions in the system due to transformer half-cycle saturation. The harmonic contents in transformers vary based on core type, air-path flux, and transformer configuration. These effects ultimately impact the quality and reliability of power transfers in the system. This paper investigates the harmonic distortions of a small-scale system with different types of transformers in the Malaysian power grid under GIC events. The simulation model is built using Power Systems Computer-Aided Design (PSCAD) software, and simulation results are computed for various GIC values. The results show that transformer saturation due to GICs can generate high levels of harmonics in the system and drastically increase reactive power losses. The worst-case harmonics are observed in the current waveforms through the static VAr compensator (SVC) connected to a 500 kV bus. Based on the findings, recommendations are provided to the industry and system operators to mitigate the harmonics and their effects during GMD events.

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来源期刊

Electric Power Systems Research 工程技术-工程：电子与电气

CiteScore

7.50

自引率

17.90%

发文量

963

审稿时长

3.8 months

期刊介绍： Electric Power Systems Research is an international medium for the publication of original papers concerned with the generation, transmission, distribution and utilization of electrical energy. The journal aims at presenting important results of work in this field, whether in the form of applied research, development of new procedures or components, orginal application of existing knowledge or new designapproaches. The scope of Electric Power Systems Research is broad, encompassing all aspects of electric power systems. The following list of topics is not intended to be exhaustive, but rather to indicate topics that fall within the journal purview. • Generation techniques ranging from advances in conventional electromechanical methods, through nuclear power generation, to renewable energy generation. • Transmission, spanning the broad area from UHV (ac and dc) to network operation and protection, line routing and design. • Substation work: equipment design, protection and control systems. • Distribution techniques, equipment development, and smart grids. • The utilization area from energy efficiency to distributed load levelling techniques. • Systems studies including control techniques, planning, optimization methods, stability, security assessment and insulation coordination.