| 微电网系统接地方式及安全分析 |
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| 引用本文： | 魏慧君,赵维娟,刘旭生,任玉梁.微电网系统接地方式及安全分析[J].水电能源科学,2013,31(11):212-215,244. |
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| 作者姓名： | 魏慧君 赵维娟 刘旭生 任玉梁 |
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| 作者单位： | 太原理工大学 电气与动力工程学院， 山西 太原 030024;太原理工大学 电气与动力工程学院， 山西 太原 030024;忻州供电公司， 山西 忻州 034000;忻州供电公司， 山西 忻州 034000 |
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| 基金项目： | 山西省科技攻关基金资助项目（20120321005-02）；国家国际科技交流与合作专项基金资助项目(2010DFB63200) |
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| 摘 要： | 微电网并网及孤岛模式运行必须满足电力系统安全运行的基本要求，合理的微电网系统接地方式及变压器接地网的设计是微电网安全稳定运行的重要保障，分析了微电网系统接地方式，采用接地分析软件CDEGS计算了微电网联网和孤岛模式运行时，不同位置故障时故障电流的分配情况，设计了微电网变压器的接地网，并仿真计算出接触电压和跨步电压的值，验证了所设计接地网的正确性，保证了微电网的安全运行。
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| 关 键 词： | 微电网 系统接地 接触电压 跨步电压 |
Grounding Systems of Micro-Grids and Safety Analysis |
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| WEI Huijun,ZHAO Weijuan,LIU Xusheng and REN Yuliang.Grounding Systems of Micro-Grids and Safety Analysis[J].International Journal Hydroelectric Energy,2013,31(11):212-215,244. |
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| Authors: | WEI Huijun ZHAO Weijuan LIU Xusheng and REN Yuliang |
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| Abstract: | Safe operation is the basic requirement between grid-connected operation mode and islanded operation mode of micro-grid. Proper grounding systems and design of transformer grounding grid are important measures to ensure the secure and reliable operation of micro-grid. For this reason, micro-grid takes TT grounding systems, the values of fault current in different fault scenarios are calculated by grounding analysis CDEGS software between grid-connected operation mode and islanded operation mode of micro-grid. And the proper transformer grounding grid is designed. Then the value of contact voltage and step voltage are simulated. Finally, the accuracy of the designed grounding system and the secure operation of micro-grid are proved. |
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| Keywords: | micro-grid grounding systems contact voltage step voltage |
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