RTU阀室太阳能供电系统对管道直流干扰的影响
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摘要
以查明中缅管道(缅甸段)阴极保护系统受到直流干扰的原因为目的,以消除或缓解直流干扰对管道阴极保护系统影响为目标。通过现场连续监测及试验,发现管道阴极保护参数变化趋势和太阳能供电系统充电电流变化趋势高度吻合,并随时间的变化有一定的滞后性。提出了与管道平行的太阳能电力电缆对阴极保护的影响,提出了电缆铠接地消除影响的解决方法并取得验证。由此可见,太阳能供电系统充放电电流变化所产生的感应电流会使管地电位发生规律性波动。
To find out the reasons for direct current(DC) interference flowing in China-Myanmar pipeline and to eliminate or mitigate the influences of DC interference in the cathodic protection system. The results show that variation tendency of cathodic protection parameters is highly consistent with the variation tendency of the charging and discharging current data of solar energy power supply system and the former lags behind the latter by through continuous monitoring and testing on site. The influence of the solar power cable parallel to the pipe on the cathodic protection is proposed, and the solution to eliminate the influence of cable armour grounding is proposed and verified. It follows that induced current produced from the variation of charging and discharging current of solar power supply system will make pipelineto-soil potential fluctuate regularly.
To find out the reasons for direct current(DC) interference flowing in China-Myanmar pipeline and to eliminate or mitigate the influences of DC interference in the cathodic protection system. The results show that variation tendency of cathodic protection parameters is highly consistent with the variation tendency of the charging and discharging current data of solar energy power supply system and the former lags behind the latter by through continuous monitoring and testing on site. The influence of the solar power cable parallel to the pipe on the cathodic protection is proposed, and the solution to eliminate the influence of cable armour grounding is proposed and verified. It follows that induced current produced from the variation of charging and discharging current of solar power supply system will make pipelineto-soil potential fluctuate regularly.
引文
[1]A.W.Peabody,Control of pipeline corrosion,2nd ed.(Houston,TX:NACE,2001),p.219.
[2]胡士信.阴极保护工程手册.化学工业出版社,1999.
[3]陈敬和,何悟忠,李绍忠.抚顺地区管道直流杂散电流干扰腐蚀及防护的探讨.管道技术与设备,1999,6.
[4]Xinhua Wang,Xinghua Tang,Liwei Wang,Cui Wang,Wenqing Zhou.Journal of natural gas science and engineering.2014,21:474-480.
[5]Zhiguang Chen,Chaokui Qin,Jixu Tang,Yu Zhou.Experiment research of dynamic stray current interference on buried gas pipeline from urban rail transit.2013,15:76-81.
[6]K Zakowski,W Sokolski.Numeric method of IR elimination from measurement results of potential of underground pipeline in the zone of interaction of stray currents.1999,41(11):2213-2222.
[7]陈敬和等.GB 50991《埋地钢质管道直流干扰防护技术标准》.北京:中国计划出版社,2014.
[8]张平等.GB/T 50698《埋地钢质管道交流干扰防护技术标准》.北京:中国计划出版社,2011.
[9]黄桂柏等.GB/T 21447《埋地钢质管道外腐蚀控制规范》.北京:中国标准出版社,2008.
[10]胡士信等.GB/T 21448.《埋地钢质管道阴极保护技术规范》.北京:中国标准出版社,2008.
[11]中缅管道工程阴极保护与防腐.2010.
[2]胡士信.阴极保护工程手册.化学工业出版社,1999.
[3]陈敬和,何悟忠,李绍忠.抚顺地区管道直流杂散电流干扰腐蚀及防护的探讨.管道技术与设备,1999,6.
[4]Xinhua Wang,Xinghua Tang,Liwei Wang,Cui Wang,Wenqing Zhou.Journal of natural gas science and engineering.2014,21:474-480.
[5]Zhiguang Chen,Chaokui Qin,Jixu Tang,Yu Zhou.Experiment research of dynamic stray current interference on buried gas pipeline from urban rail transit.2013,15:76-81.
[6]K Zakowski,W Sokolski.Numeric method of IR elimination from measurement results of potential of underground pipeline in the zone of interaction of stray currents.1999,41(11):2213-2222.
[7]陈敬和等.GB 50991《埋地钢质管道直流干扰防护技术标准》.北京:中国计划出版社,2014.
[8]张平等.GB/T 50698《埋地钢质管道交流干扰防护技术标准》.北京:中国计划出版社,2011.
[9]黄桂柏等.GB/T 21447《埋地钢质管道外腐蚀控制规范》.北京:中国标准出版社,2008.
[10]胡士信等.GB/T 21448.《埋地钢质管道阴极保护技术规范》.北京:中国标准出版社,2008.
[11]中缅管道工程阴极保护与防腐.2010.