| 500kV横沥变电站接地网降阻改造 |
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| 引用本文： | 万四维,黄宪武.500kV横沥变电站接地网降阻改造[J].广东电力,2011,24(4):84-86. |
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| 作者姓名： | 万四维 黄宪武 |
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| 作者单位： | 广东电网公司东莞供电局; |
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| 摘 要： | 针对500 kV横沥变电站接地网电阻值不满足安全运行的要求,需要进行降阻改造的问题,分析了站外扩大接地网面积、垂直深井爆破及压力灌降阻剂、电解离子接地极和斜井接地加物理降阻这4个改造方案的利弊,综合考虑横沥变电站的地质、地形、工况和规模等因素,选择斜井接地加物理降阻方案进行变电站接地网改造,改造后接地网电阻值达到了设计...
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| 关 键 词： | 大型变电站 接地网 降低接地电阻 土壤电阻率 |
Resistance-reducing Transformation for Earthed Networks of 500 kV Hengli Substation |
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| WAN Si-wei,HUANG Xian-wu.Resistance-reducing Transformation for Earthed Networks of 500 kV Hengli Substation[J].Guangdong Electric Power,2011,24(4):84-86. |
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| Authors: | WAN Si-wei HUANG Xian-wu |
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| Affiliation: | WAN Si-wei,HUANG Xian-wu(Dongguan Power Supply Bureau of Guangdong Power Corporation Corp.,Dongguan,Guangdong 523008,China) |
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| Abstract: | Aiming at failure of resistance value of earthed networks of 500 kV Hengli substation to meet the safety requirement and the demand for resistance-reducing transformation,advantages and disadvantages of such four transformation schemes as size enlargement outside of the substation,vertical deep-well blasting and resistance reducer,ionic earth electrode and inclined shaft earthing plus physical resistance-reducing are analyzed.By comprehensive consideration of geology,terrain working condition,scale and othe... |
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| Keywords: | large substation earthed networks earth resistance reducing soil resistivity |
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