串联补偿型饱和铁心故障限流器气隙结构的优化设计

doi:10.16180/j.cnki.issn1007-7820.2022.08.004

Abstract

Abstract:

Saturated core fault current limiter will cause higher harmonic pollution when used in series compensation. In order to ensure the safe and stable operation of the power system, the saturated core fault current limiter with improved air gap structure is designed based on the principle of segment saturated core. The simulation models of saturated core fault current limiter with different air gap structures are established by JMAG. The relationship between current and flux of the current limiter is imported into MATLAB/Simulink and the corresponding simulation system model is established to further analyze and compare the control characteristics, harmonic content and fault current limiting ability of the two current limiter models. The results show that the saturated core fault current limiter with improved air gap structure has about 1.5 times of reactance regulation range and lower harmonic distortion rate when compared with the full air gap structure without losing the current limiting capacity.

Key words: fault current limiter, finite element analysis, series compensation, air gap structure, saturated core, harmonic analysis, reactor, power quality

CLC Number:

TN702

WANG Ruixin,YAO Lei. Optimization Design of Air Gap Structure of Series Compensating Saturated Core Fault Current Limiter[J].Electronic Science and Technology, 2022, 35(8): 21-26.

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References 18

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参数	数值
交流线圈匝数	30
直流线圈匝数	600
铁心横截面积a×b	0.48 m×0.40 m
窗口面积c×d	0.44 m×0.30 m
气隙宽度δ	0.10 m
铁心材料	50CS470
线圈材料	铜

Optimization Design of Air Gap Structure of Series Compensating Saturated Core Fault Current Limiter

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