| 大电流法与异频法测量地网电阻比较 |
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| 引用本文： | 杨柳. 大电流法与异频法测量地网电阻比较[J]. 广东输电与变电技术, 2009, 11(5): 42-43 |
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| 作者姓名： | 杨柳 |
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| 作者单位： | 广州供电局中心试验研究所 |
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| 摘 要： | 传统的50Hz工频大电流法测量接地电阻难于排除干扰,测量工作量大,不易实施。异频法接地电阻测量,能有效地躲过工频干扰,以较小的测量电流,得到比较准确接地电阻测量结果。实践证明,异频法将逐渐代替50Hz工频大电流法,成为测量变电站接地电阻的主要方法。
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| 关 键 词： | 接地电阻 工频大电流法 异频法 |
The Comparison between Large-current Method and Different-frequency Method in Measuring the Grounding Resistance of Earth Screen |
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| Yang Liu. The Comparison between Large-current Method and Different-frequency Method in Measuring the Grounding Resistance of Earth Screen[J]. Guangdong Power Transmission Technology, 2009, 11(5): 42-43 |
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| Authors: | Yang Liu |
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| Affiliation: | Central Test and Research Institute of Guangzhou Power Supply Bureau Yang Liu |
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| Abstract: | The traditional 50Hz power frequency Large-current method for measuring the grounding resistance fails to avoid the interference. This method is too hard to proceed. Different-frequency method can effectively avoid interference. With smaller measuring current,it can result more accurate measured data. Practice has proven that this method will become the principle method for the measurement of the substation grounding resistance in place of the Large-current method gradually. |
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| Keywords: | Grounding resistance Frequency Large-current method Different-frequency method |
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