海上风电工程交流杂散电流对海底管道的干扰程度及防护措施
Interference Degree and Protective Measures of AC Stray Current of Offshore Wind Power Project on Submarine Pipeline
摘 要
通过数值模拟技术，研究了海缆和陆上换流站的杂散电流对海底管线的干扰程度及影响因素，并根据管线运行状况及干扰程度给出了优化方案。结果表明：海缆稳态运行下电流不平衡度为1.39%、2%和4%时，海底与陆地管线的交流干扰电压和电流密度均满足评价指标要求，无需缓解设计；海缆故障运行时，在C线、B线及A线的登陆段分别敷设100 m、100 m及150 m的锌带，可以使管道接触电压低于779 V人身安全电压限值的要求。
交流干扰
腐蚀评价
数值模拟
subsea pipeline
AC interference
corrosion evaluation
numerical simulation
Abstract
Through numerical simulation technology, the interference degree and influencing factors of AC stray current of submarine cables and onshore converter stations on submarine pipelines were studied. And according to the pipeline operation condition and interference degree, the optimized solutions were proposed. The results show that current imbalance degrees were 1.39%, 2% and 4% under steady-state operating condition of submarine cable, the AC interference voltage and current density of the submarine and land pipelines met the evaluation index requirements, and there was no need to mitigation design; 100 m, 100 m and 150 m zinc tapes were laid on the landing sections of line C, line B and line A respectively, which made the contact voltage of pipeline lower than the personal safety voltage limit of 779 V.
中图分类号 TG174 DOI 10.11973/fsyfh-202103008
所属栏目 应用技术
基金项目
收稿日期 2020/9/22
修改稿日期
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引用该论文: LI Ping. Interference Degree and Protective Measures of AC Stray Current of Offshore Wind Power Project on Submarine Pipeline[J]. Corrosion & Protection, 2021, 42(3): 46
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参考文献
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【3】侯保荣,张盾,王鹏. 海洋腐蚀防护的现状与未来[J]. 中国科学院院刊,2016,31(12):1326-1331.
【4】姜乐,葛宇,孙霄. 海底管道完整性管理技术方法探析[J]. 油气田地面工程,2019,38(S1):119-122.
【5】姜丽,杜琼伟,王群. 海洋风电产业发达国家产业发展政策及经验探讨[J]. 水电与新能源,2014(4):68-70.
【6】辛华. 中国风电发展路线图2050[J]. 电世界,2012,53(6):50.
【7】NIELSEN L V,BAUMGARTEN B,COHN P,et al. A field study of line currents and corrosion rate measurements in a pipeline critically interfered with AC and DC stray currents[C]//The 9th CEOCOR Annual Conference. Brussels,Belgium:CERROR,2006.
【8】REYES T,BHOLA S M,OLSON D L,et al. Study of corrosion of super martensitic stainless steel under alternating current in artificial seawater[C]//CORROSION/2011. Houston,Texas:NACE,2011:11341.
【9】LILLEBY L S,OLSEN S,HESJEVIK S M. Effects from alternating current on cathodic protection of submarine pipelines[C]//CORROSION/2011. Houston,Texas:NACE,2011:11055.
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【12】FLOYD R. Testing and mitigation of AC corrosion on 8 line:A field study[C]//CORROSION/2004. Houston,Texas:NACE,2004:04210.
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【19】GOIDANICH S,LAZZARI L,ORMELLESE M. AC corrosion. Part 1:Effects on over potentials of anodic and cathodic processes[J]. Corrosion Science,2010,52(2):491-497.
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