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| Research on Boundary Condition Inversion Method for Numerical Simulation of Regional Cathodic Protection and Its Application |
ZHUANG Dawei1, DU Yanxia1( ), CHEN Taotao2, LU Danping1 |
1.Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China
2.Beijing Gas Group Company Limited, Beijing 100035, China |
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Abstract Numerical simulation could provide important information to optimize the regional cathodic protection system. However, the accuracy of numerical simulation is affected by several factors, especially by the boundary conditions, reflecting the coating condition, polarization characteristics of buried structures in the soil environment. The coating conditions of pipelines sometimes are quite different. It is difficult to determine the boundary conditions of buried pipelines accurately for in service stations. In this paper, the boundary conditions required for numerical simulation are acquired by inversion calculation, then based on the acquired boundary conditions, the optimal design for distribution of anode ground beds was carried out, therewith an optimized regional cathodic protection scheme was determined. Following the determined scheme, the construction of a regional cathodic protection system was realized, hence the calculation results were compared with the real field test results in the end. The margin of errors for the above two sets of results is under 10%, that verified reasonably the accuracy of the proposed method.
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Received: 16 March 2020
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| Fund: National Key R&D Program of China(2016YFC0802103) |
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Corresponding Authors:
DU Yanxia
E-mail: duyanxia@ustb.edu.cn
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About author: DU Yanxia, E-mail: duyanxia@ustb.edu.cn
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