某500 kV海缆对邻近原油管道存在电磁干扰风险，采用CDEGS软件对海缆正常运行、单相对地短路故障等状态时原油管道的干扰电压和电流密度进行模拟评估。结果表明：海缆正常运行时，管道最大干扰电压为0.063 1 V、电流密度为9.36 A/m²，符合干扰电压小于4 V （GB/T 50698-2011标准）、干扰电流密度小于30 A/m²（BS EN-15280：2013标准）的安全规定；当海缆因外界因素出现单相对地短路故障时，短时间内管道最大干扰电压约为66.35 V，远低于防腐蚀层3 000 V的击穿电压（NACE SP0177-2007标准），且符合人体安全电压0.2 s内交流电压<1 500 V的要求（DL/T 5033-2006标准）。模拟评估结果认为，该500 kV海缆的建设不会对邻近管道造成明显电磁干扰。

A 500 kV submarine cable had a risk of electromagnetic interference to adjacent crude oil pipelines. The CDEGS software was used to simulate and evaluate the interference voltages and current densities of the crude oil pipelines during normal operation of the submarine cable and in single phase short to ground. The results show that when the submarine cable ran normally, the maximum interference voltage was 0.063 1 V and the maximum current density was 9.36 A/m² for the pipeline, which met the safety requirements of interference voltage less than 4 V (GB/T 50698-2011 standard) and current density less than 30 A/m² (BS EN 15280:2013 standard). When single phase of the submarine cable was short-circuited due to external factors, the maximum interference voltage of the pipeline was 66.35 V in short time, which was less than the coating breakdown voltage of 3 000 V (NACE SP0177-2007standard) and met the personal safety requirement of interference voltage less than 1 500 V during 0.2 s (DL/T5033:2013 standard). The simulation results show that the construction of the 500 kV submarine cable will not cause significant electromagnetic interference to the adjacent pipelines.