固态去耦合器交流防护设施的检测与评价

Inspection and evaluation of AC protection facilities for solid state decouplers

随着国家基础建设的飞速发展,电力、交通及能源等公共走廊日趋增多,埋地管道的交流干扰腐蚀问题备受关注。目前,固态去耦合器排流技术在油气管道交流干扰防护中得到广泛应用。但由于缺乏对固态去耦合器排流技术的深入研究,国内外相关行业尚未出台相关使用标准,现场检测人员缺乏有效的检测方法和评价指标可供参考。结合多年现场检测工作经验,总结并明确了交流干扰电压、交流排流电流、交流阻抗、直流泄漏电流、接地电阻等固态去耦合器排流技术的评价指标,提出对应的检测方法及参数要求,能够有效地检测并评价固态去耦合器交流排流及直流隔离等性能。研究成果可有效指导现场检测人员开展埋地管道固态去耦合器排流工作,对提升油气管道的检测与评价具有重要的指导意义。

With the rapid development of national infrastructures,public corridors such as electricity,traffic and energy are increasing day by day,and the AC interference corrosion of buried pipelines has attracted much more attention.The solid state decoupler based drainage technology has been widely used for the AC interference protection of pipelines.However,due to the inadequate in-depth research on the solid state decoupler based drainage technology and no application standard issued in the domestic and foreign industries,no effective inspection methods and evaluation indicators could be referred by the field inspectors.Combined with many years of field inspection experience,the evaluating indicators,such as the AC interference voltage,AC drainage current,AC impedance,DC leakage current,grounding resistance,were summarized and defined,and the appropriate inspection methods and parameter requirements were put forward,which could effectively inspect and evaluate the AC drainage and DC isolation functions of the solid state decouplers.Generally,the research results can effectively guide the field inspectors to organize the drainage of solid state decouplers of the buried pipelines,which is of important guiding significance for improving the inspection and evaluation of oil and gas pipelines.