Presaturated iron-core fault current limiters for MVDC power system applications

IF 1.5 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Iet Electric Power Applications Pub Date : 2024-11-27 DOI:10.1049/elp2.12524

Ibrahim A. Metwally, Mohamed Eladawy

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引用次数: 0

Abstract

This paper presents design and dynamic performance investigation of a $25 k V$ full-scale, modular topology (arranged on the sides of a regular hexagon), medium voltage direct current (MVDC) permanent magnet (PM) biased presaturated fault current limiter (PMFCL). This PMFCL represents a cost-effective design with enhanced longevity, reliability, scalability, and controllability. The scalability of this modular design can be extended by adding or removing CI (letters: CI) core units for different power system applications in a voltage range from $5$ to $50 k V$ or more. The rated steady-state (DC) and fault currents of $1 k A$ and $4 k A$ , respectively. The detection free and self-triggering performance of this PMFCL is designed and simulated through a 3D coupled model of electric-circuit magnetic-field of COMSOL Multiphysics. Accurate representation of PM behaviour, especially in the second quadrant of its $B - H$ hysteresis loop of Jiles-Atherton method gives realistic performance of the PMFCL. Comprehensive finite element simulations are carried out to study the effect of design parameters on the dynamic performance of PMFCL. Good agreement is found between COMSOL simulation results of DC-biased PFCL and experimental results of a developed small-scale prototype. Results reveal that the MVDC PMFCL shows significant improvement and satisfactory performance, in terms of fault current clipping ratio, fault current slope, and power losses, as compared to the conventional MVDC DC-biased presaturated CI iron-core fault current limiter (PFCL).

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本文介绍了一种25 k V $\mathbf{25}\,\boldsymbol{k}\boldsymbol{V}$满量程，模块化拓扑（排列在正六边形的两侧），中压直流（MVDC）永磁偏置预饱和故障限流器（PMFCL）的设计和动态性能研究。该PMFCL是一种经济高效的设计，具有更长的使用寿命、可靠性、可扩展性和可控性。这种模块化设计的可扩展性可以通过添加或删除CI（字母）来扩展：CI)核心单元，适用于不同的电力系统应用，电压范围从5 $\mathbf{5}$到50 k V $\mathbf{50} $,\boldsymbol{k}\boldsymbol{V}$或更高。额定直流电流和故障电流分别为1k A $\mathbf{1}\、\boldsymbol{k}\boldsymbol{A}$和4k A $\mathbf{4}\、\boldsymbol{k}\boldsymbol{A}$。通过COMSOL Multiphysics的三维电路磁场耦合模型，对该PMFCL的免检测和自触发性能进行了设计和仿真。Jiles-Atherton方法精确地表示PM的行为，特别是在其B−H $\boldsymbol{B}-\boldsymbol{H}$迟滞环的第二象限，使PMFCL具有真实的性能。通过全面的有限元仿真研究了设计参数对PMFCL动态性能的影响。直流偏置PFCL的COMSOL仿真结果与研制的小型样机实验结果吻合较好。结果表明，与传统的直流偏置预饱和CI铁芯故障限流器（PFCL）相比，MVDC PMFCL在故障电流剪切比、故障电流斜率和功率损耗方面都有显著改善和令人满意的性能。

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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来源期刊

Iet Electric Power Applications 工程技术-工程：电子与电气

CiteScore

4.80

自引率

5.90%

发文量

104

审稿时长

3 months

期刊介绍： IET Electric Power Applications publishes papers of a high technical standard with a suitable balance of practice and theory. The scope covers a wide range of applications and apparatus in the power field. In addition to papers focussing on the design and development of electrical equipment, papers relying on analysis are also sought, provided that the arguments are conveyed succinctly and the conclusions are clear. The scope of the journal includes the following: The design and analysis of motors and generators of all sizes Rotating electrical machines Linear machines Actuators Power transformers Railway traction machines and drives Variable speed drives Machines and drives for electrically powered vehicles Industrial and non-industrial applications and processes Current Special Issue. Call for papers: Progress in Electric Machines, Power Converters and their Control for Wave Energy Generation - https://digital-library.theiet.org/files/IET_EPA_CFP_PEMPCCWEG.pdf