Evaluation and Mitigation of AC Interference on Jiaori Natural Gas Pipeline

Jiaori natural gas pipeline is in parallel with or crosses AC electrified railways and high voltage transmission lines in many places, so there is high risk of AC interference. On the basis of in-situ test data, the AC interference of Jiaori natural gas pipeline was evaluated according to corresponding standards. The AC interference model of Jiaori pipeline was built up using numerical simulation software and the mitigation effects for different kinds of mitigation ground beds were studied. The most suitable mitigation scheme was proposed according to calculated results. After the mitigation scheme was constructed, the field measurement indicated that the mitigation object achieved, which can be referenced by similar projects.