| 220 kV GIS变电站雷电过电压防护措施的研究 |
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| 引用本文： | 刘青,张玉峰,程勇. 220 kV GIS变电站雷电过电压防护措施的研究[J]. 高压电器, 2008, 44(4) |
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| 作者姓名： | 刘青 张玉峰 程勇 |
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| 作者单位： | 西安科技大学电控学院,陕西,西安,710054;西安科技大学电控学院,陕西,西安,710054;西安科技大学电控学院,陕西,西安,710054 |
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| 摘 要： | 利用电磁暂态程序ATP-EMTP计算了某220 kV GIS变电站进线落雷时的GIS内部设备以及主变压器上出现的雷电过电压,分析了运行方式及变压器入口电容对雷电过电压的影响,研究了MOA不同配置方案对变压器以及GIS内部设备的保护效果,分析表明,即使对于通过电缆与GIS相连的变压器,旁边也不必装设MOA,3台进线MOA可以给系统提供可靠的保护,变压器入口电容对雷电过电压的影响不大。
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| 关 键 词： | 雷电过电压 变压器 金属氧化物避雷器 雷电防护 入口电容 |
Research on Protection Against Lightning Over-voltage on Transformer in a 220 kV GIS Substation |
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| LIU Qing,ZHANG Yu-feng,CHENG Yong. Research on Protection Against Lightning Over-voltage on Transformer in a 220 kV GIS Substation[J]. High Voltage Apparatus, 2008, 44(4) |
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| Authors: | LIU Qing ZHANG Yu-feng CHENG Yong |
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| Abstract: | The lightning over-voltages on transformers and the equipments in GIS in a 220 kV gas insulated substation(GIS) were calculated with ATP-EMTP software.The effects of operation modes and entrance capacitance value on lightning over-voltage were analyzed,and different protective schemes of transformer with MOA were compared.The results show that even for the transformer which is connected to GIS by cable line,its side MOA is unnecessary;the MOAs on three entrance cables provide reliable protection of transformer;and the entrance capacitance has little effect on lightning over-voltage. |
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| Keywords: | lightning over-voltages transformer MOA lightning protection entrance capacitance |
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