Influence of HVDC Grounding Electrode's Ground Current on the Tower Grounding Body of Adjacent Transmission Line
摘 要
建立了高压直流输电系统的接地系统,计算了高压直流接地极单极运行对流经邻近输电线路避雷线的干扰电流以及杆塔接地体射线(电极)吸收或释放的电流密度;评估了不同单极运行模式下,入地电流为3 000 A时杆塔接地体射线末端的腐蚀深度。结果表明:接地极阳极放电,靠近接地极3 km区域内的避雷线吸收杆塔接地体的净电流,阴极运行情况下则反之;接地极附近12.5 km的范围内避雷线的电流变化较大。阳极运行时,杆塔上靠近直流接地极的射线吸收电流,远离的射线释放电流,阴极运行情况下则反之;射线末端的电流密度最大。阴极运行的概率越大,杆塔射线末端的腐蚀深度就越大,靠近接地极的10 km范围内射线末端均是重点防护区域。
Abstract
A grounding system of a HVDC transmission system was established, and the interference current flowing through the grounding wire and the tower grounding ray electrodes' absorption or leakage current density of the transmission line adjacent to the HVDC grounding electrode in monopolar mode were analyzed. Ray ends' corrosion depth of each tower grounding body was assessed with a grounding current of 3000 A under different unipolar operating mode conditions. The results showed that when the HVDC grounding electrode was positively discharged, the net current of each tower grounding body within 3 km around the HVDC grounding electrode flowed into the grounding wire, the net current of each tower grounding body out of the 3 km around the HVDC grounding electrode flowed out from the grounding wire. When the HVDC system was negatively discharged, the net currents' flowing direction was reversed; in the range of 12.5 km near the HVDC grounding electrode, the current flowing through the grounding wire changed greatly. When the HVDC system was positively discharged, the rays of each tower closed to the HVDC grounding electrode absorbed current, and the rays away from the HVDC grounding electrode released current, when the HVDC system was negatively discharged, the state of absorbing or releasing current was reversed. When the ray absorbed or releaseed the current, the current density of the ray end was the maximum. The greater the probability of cathode operation, the greater the corrosion depth of the tower grounding body ray end. The range within 10 km of the HVDC grounding electrode was the key protection area.
中图分类号 TTG174 DOI 10.11973/fsyfh-202005009
所属栏目 应用技术
基金项目 国家重点研发计划专项项目(2016YFC0802101)
收稿日期 2018/7/17
修改稿日期
网络出版日期
作者单位点击查看
引用该论文: ZHANG Hui,DU Yanxia,QIN Runzhi,JIANG Zitao. Influence of HVDC Grounding Electrode's Ground Current on the Tower Grounding Body of Adjacent Transmission Line[J]. Corrosion & Protection, 2020, 41(5): 40
共有人对该论文发表了看法,其中:
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】NICHOLSON P. High voltage direct current interference with underground/underwater pipelines[C]//CORROSION 2010. Texas,U.S.A:NACE,2010:10102.
【2】VERHIEL A L. The effects of high-voltage DC power transmission systems on buried metallic pipelines[J]. IEEE Transactions on Industry and General Applications,1971,IGA-7(3):403-415.
【3】王文涛. 高压交、直流电力设施对埋地管道的干扰危害及检测[J]. 石油和化工设备,2009,12(9):51-55.
【4】应斌. 高压直流输电系统接地极对长输管道安全运行的影响[J]. 油气田地面工程,2014,33(7):23-24.
【5】QIN R Z,DU Y X,PENG G Z,et al. High voltage direct current interference on buried pipelines:case study and mitigation design[C]//Proceedings of the Corrosion 2017. New Orleans:NACE,2017:no.9049.
【6】DAWALIBI F,MUKHEDKAR D. Multi step analysis of interconnected grounding electrodes[J]. IEEE Transactions on Power Apparatus and Systems,1976,95(1):113-119.
【7】DAWALIBI F,FINNEY W. Transmission line tower grounding performance in non-uniform soil[J]. IEEE Transactions on Power Apparatus and Systems,1980,PAS-99(2):471-479.
【8】李红岩,李红梅,耿星河. 杆塔接地体的选择及应用[J]. 科技与企业,2015(18):196-196.
【9】张建坤,常敏,王建平. 特高压输变电工程接地研究与实践[M]. 北京:中国电力出版社,2014.
【10】颜喜平,许根养,敬亮兵,等. 现场杆塔接地电阻和土壤电阻率测量存在问题及误差分析[J]. 电瓷避雷器,2008(3):38-41.
【11】FENG Z H,LU L,FENG J Z. Research on reducing grounding resistance of transmission line tower grounding grid[C]//2011 International Conference on Electrical and Control Engineering,September 16-18,2011. Yichang:IEEE,2011:1216-1219.
【12】王明新,张强. 直流输电系统接地极电流对交流电网的影响分析[J]. 电网技术,2005,29(3):9-14.
【13】韩学民,夏长征,喻剑辉,等. 杆塔接地体冲击电位分布特性的模拟试验[J]. 高电压技术,2011,37(10):2464-2470.
【14】何金良,孔维政,张波. 考虑火花放电的杆塔冲击接地特性计算方法[J]. 高电压技术,2010,36(9):2107-2111.
【15】刘伟龙. 直流输电工程接地极对输电线路腐蚀作用的模拟研究[D]. 荆州:长江大学,2015.
【16】高理迎,郭贤珊,董晓辉. 接地极入地电流对杆塔腐蚀及防护研究[J]. 中国电力,2009,42(12):38-41.
【17】朱轲,吴驰,扬威. 直流接地极对附近输电线路杆塔的腐蚀影响及防护措施的研究[J]. 高压电器,2011,47(10):41-47.
【18】何金良,曾嵘. 电力系统接地技术[M]. 北京:科学出版社,2007.
【19】裴锋,田野,刘平,等. Q235碳钢在红壤中的腐蚀行为[J]. 腐蚀与防护,2016,37(9):715-719.
【2】VERHIEL A L. The effects of high-voltage DC power transmission systems on buried metallic pipelines[J]. IEEE Transactions on Industry and General Applications,1971,IGA-7(3):403-415.
【3】王文涛. 高压交、直流电力设施对埋地管道的干扰危害及检测[J]. 石油和化工设备,2009,12(9):51-55.
【4】应斌. 高压直流输电系统接地极对长输管道安全运行的影响[J]. 油气田地面工程,2014,33(7):23-24.
【5】QIN R Z,DU Y X,PENG G Z,et al. High voltage direct current interference on buried pipelines:case study and mitigation design[C]//Proceedings of the Corrosion 2017. New Orleans:NACE,2017:no.9049.
【6】DAWALIBI F,MUKHEDKAR D. Multi step analysis of interconnected grounding electrodes[J]. IEEE Transactions on Power Apparatus and Systems,1976,95(1):113-119.
【7】DAWALIBI F,FINNEY W. Transmission line tower grounding performance in non-uniform soil[J]. IEEE Transactions on Power Apparatus and Systems,1980,PAS-99(2):471-479.
【8】李红岩,李红梅,耿星河. 杆塔接地体的选择及应用[J]. 科技与企业,2015(18):196-196.
【9】张建坤,常敏,王建平. 特高压输变电工程接地研究与实践[M]. 北京:中国电力出版社,2014.
【10】颜喜平,许根养,敬亮兵,等. 现场杆塔接地电阻和土壤电阻率测量存在问题及误差分析[J]. 电瓷避雷器,2008(3):38-41.
【11】FENG Z H,LU L,FENG J Z. Research on reducing grounding resistance of transmission line tower grounding grid[C]//2011 International Conference on Electrical and Control Engineering,September 16-18,2011. Yichang:IEEE,2011:1216-1219.
【12】王明新,张强. 直流输电系统接地极电流对交流电网的影响分析[J]. 电网技术,2005,29(3):9-14.
【13】韩学民,夏长征,喻剑辉,等. 杆塔接地体冲击电位分布特性的模拟试验[J]. 高电压技术,2011,37(10):2464-2470.
【14】何金良,孔维政,张波. 考虑火花放电的杆塔冲击接地特性计算方法[J]. 高电压技术,2010,36(9):2107-2111.
【15】刘伟龙. 直流输电工程接地极对输电线路腐蚀作用的模拟研究[D]. 荆州:长江大学,2015.
【16】高理迎,郭贤珊,董晓辉. 接地极入地电流对杆塔腐蚀及防护研究[J]. 中国电力,2009,42(12):38-41.
【17】朱轲,吴驰,扬威. 直流接地极对附近输电线路杆塔的腐蚀影响及防护措施的研究[J]. 高压电器,2011,47(10):41-47.
【18】何金良,曾嵘. 电力系统接地技术[M]. 北京:科学出版社,2007.
【19】裴锋,田野,刘平,等. Q235碳钢在红壤中的腐蚀行为[J]. 腐蚀与防护,2016,37(9):715-719.
相关信息