| 高阻接地的船舶中压电网暂态短路电流计算 |
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| 引用本文： | 张彦魁,毕大强,宋巍涛,董世军.高阻接地的船舶中压电网暂态短路电流计算[J].电力系统保护与控制,2014,42(1):17-23. |
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| 作者姓名： | 张彦魁 毕大强 宋巍涛 董世军 |
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| 作者单位： | 1.电力系统国家重点实验室，清华大学电机系，北京 100084;1.电力系统国家重点实验室，清华大学电机系，北京 100084;2.青海省西宁供电公司，青海 西宁 810000;3.许继电气股份有限公司，河南 许昌 461000 |
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| 摘 要： | 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。
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| 关 键 词： | 船舶中压电网 高阻接地 等效发电机 暂态短路电流 |
Transient short circuit current calculation for shipboard medium voltage power grid with high resistance grounding |
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| ZHANG Yan-kui,BI Da-qiang,SONG Wei-tao and DONG Shi-jun.Transient short circuit current calculation for shipboard medium voltage power grid with high resistance grounding[J].Power System Protection and Control,2014,42(1):17-23. |
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| Authors: | ZHANG Yan-kui BI Da-qiang SONG Wei-tao and DONG Shi-jun |
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| Abstract: | 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. |
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| Keywords: | shipboard MV power grid high resistance grounding equivalent generator (EG) transient short circuit current |
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