陕京三线输气管道工程对受交流干扰的区段采用了集中接地、故障屏蔽、固态去耦合器接地等交流干扰防护新技术，通过现场干扰程度调查与测试、防护效果检测评价、固态去耦合器运行参数、持续干扰防护接地点优化调整与测试等工作，获得了详细的实际数据，对固态去耦合器接地方式新技术的应用情况，以及防护点的优化等进行了总结，为埋地钢管交流干扰防护工程的设计、施工及运行测试提供参考。
New technologies such as lumped ground , fault shield and solid-state DC; decoupler grounding were used to protections against AC influence in Shanxi-Beijing Gas Pipeline Ⅲ. The application of solid-state DC decoupler grounding and the optimization of protection point were summarized. Based on the detailed data from the on-site tests of influence degree, inspections of protection effects, analyses of operation parameters of solid-state DC decoupler and optimization of grounding point the solid-state DC; decoupler technology were summarized, which may provide a reference to the design, construction, operation and inspection of protection against AC influence for underground steel pipelines.
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