CAJ | 학술논문

重复脉冲法（repetitive surge oscilloscope,RSO）是用于诊断发电机转子绕组匝间短路的试验技术。为此,介绍了重复脉冲法的基本原理,讨论了脉冲信号在电机转子绕组内的传播过程。依据传播特性,建立了反映该传播过程的分布参数电路模型并采用时域有限差分法求解得出绕组内部的暂态波形曲线,分析了该算法的稳定性。然后基于该模型讨论了注入信号的上升沿时间和转子绕组的故障特征对匝间短路故障诊断精度的影响。研究结果表明：重复脉冲法适于对转子绕组进行跟踪分析,其诊断结果的影响因素主要包括匝间短路故障位置和注入信号的上升沿时间,可通过缩短注入信号的上升沿时间来提高诊断精度。
중복맥충법（repetitive surge oscilloscope,RSO）시용우진단발전궤전자요조잡간단로적시험기술。위차,개소료중복맥충법적기본원리,토론료맥충신호재전궤전자요조내적전파과정。의거전파특성,건립료반영해전파과정적분포삼수전로모형병채용시역유한차분법구해득출요조내부적잠태파형곡선,분석료해산법적은정성。연후기우해모형토론료주입신호적상승연시간화전자요조적고장특정대잡간단로고장진단정도적영향。연구결과표명：중복맥충법괄우대전자요조진행근종분석,기진단결과적영향인소주요포괄잡간단로고장위치화주입신호적상승연시간,가통과축단주입신호적상승연시간래제고진단정도。
RSO(repetitive surge oscilloscope)is a technique which is applied in the detection of inter-turn shorts in generator rotors.We introduce the basic principle of RSO,and discuss the propagation of the pulse signal in the rotor windings.According to the property of the propagation,a distribution parameter circuit model which can reflect the propagation of the signal is established,the finite difference time domain(FDTD)method is used to obtain the waveform of the rotor windings,and the stability of the algorithm is analyzed.Moreover,influences of rising time of the injected signal are discussed,and the influences of fault signature in rotor windings are also discussed.The conclusion can be drawn as follows:RSO is suitable for follow-up analysis,the influential factors of the diagnosis include the location of the inter-turn shorts and the rising time of injected signal.The diagnostic accuracy can be improved by shortening the rising time.