Layout optimization of framework in substation in view of electromagnetic environment

Layout of the metal framework, which is widely placed in the power engineering, has effects on the electric field distribution. And moderate electromagnetic environment contributes to the health of staff in the high-voltage substation. Hence, in order to improve the exposure situation in the outdoor substation, the present study optimized the layout of the framework by using a probabilistic method. The exposure failure probability of each working path was calculated under various arrangement schemes, based on the practical environmental field and the level of field staff can bear safely. The occupational exposure situation was improved by finding out framework arrangement with the smallest failure probability, which corresponds to the safest exposure. The obtained results indicate that compact but uneven longitudinal gap between columns, the rhythmically placed beams, and medium sized root span of the column help to create optimal electric field exposure in the substation.