CAJ | 학술논문

针对高阻接地方式的船舶中压电网，提出一种系统化的暂态短路电流计算方法。考虑同步发电机及异步电动机暂态特性，根据故障点位置，基于分层等效方法将系统中所有发电机和电动机等效为一台发电机。对于等效发电机，考虑系统分布电容，用对称分量法求解三相对称及各种不对称故障的暂态电流。用Simulink仿真结果对比验证了该方法的有效性和精确性。
침대고조접지방식적선박중압전망，제출일충계통화적잠태단로전류계산방법。고필동보발전궤급이보전동궤잠태특성，근거고장점위치，기우분층등효방법장계통중소유발전궤화전동궤등효위일태발전궤。대우등효발전궤，고필계통분포전용，용대칭분량법구해삼상대칭급각충불대칭고장적잠태전류。용Simulink방진결과대비험증료해방법적유효성화정학성。
A systematic calculation method for transient short circuit current is presented for the shipboard medium-voltage (MV) power grid with high resistance grounding. Considering the transient characteristics of synchronous generator and asynchronous motor, according to the location of short circuit, all generators and motors in the system are equivalent to a generator based on the layered equivalent method. For the equivalent generator, the transient currents under three-phase symmetrical and various asymmetric faults including system distributed capacitance are solved by using symmetrical component method. Simulink simulation results verify the validity and accuracy of the method.