柔性石墨复合接地材料及其接地特性

发布时间：2019-07-18 13:33

【摘要】：鉴于电力接地领域现行金属接地材料存在易腐蚀、运输施工难度大、与土壤间隙大、易偷盗以及高成本等实际工程问题,研发一种新型复合接地材料——柔性石墨复合接地材料。首先简要阐述该新型接地材料的接地特性;然后采用有限元计算方法对比分析新型接地材料和常见铜、钢接地材料的电磁特性(趋肤效应及电感效应);继而基于数值计算结果对柔性石墨复合接地材料进行结构改进,制备了扩径石墨复合接地材料,并分析石墨复合接地材料在输电线路杆塔接地应用的可行性;最后通过新型接地材料在110k V和220k V输电线路杆塔接地工程中的现场测试数据,验证本文所述柔性石墨复合接地材料的可靠性。研究内容对电力系统接地领域防腐工程具有实际应用价值。
[Abstract]:In view of the practical engineering problems of metal grounding materials in the field of power grounding, such as easy corrosion, difficult transportation and construction, large gap with soil, easy theft and high cost, a new type of composite grounding material, flexible graphite composite grounding material, is developed. Firstly, the grounding characteristics of the new grounding material are briefly described, and then the electromagnetic characteristics (skin effect and inductance effect) of the new grounding material, common copper and steel grounding material, are compared and analyzed by finite element method. Then, based on the numerical calculation results, the structure of flexible graphite composite grounding material is improved, and the feasibility of graphite composite grounding material in transmission line tower grounding is analyzed. Finally, the reliability of the flexible graphite composite grounding material in 110kV and 220kV transmission line tower grounding engineering is verified by the field test data of new grounding material in 110kV and 220kV transmission line tower grounding project. The research content has practical application value to anticorrosion engineering in the field of power system grounding.
【作者单位】：广东电网有限责任公司佛山供电局;武汉大学电气工程学院;
【基金】：南方电网公司科研项目(KGD20140867) 国家自然科学基金(51477120)资助
【分类号】：TM862

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