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Near field coupling to shielded cable due to
switching operation in substation |
| QI Lei, CUI Xiang |
| Beijing Key Laboratory of High Voltage and EMC, North China Electric Power University |
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Abstract It is vital to study the electromagnetic coupling to shielded cable for improving electromagnetic anti- interference ability of secondary equipment in a substation. As a hybrid of method of moment (MoM) and transmission line method, a frequency domain model is put forward to study the near field coupling to shielded cable due to the switching operation in substation. Compared with the results of EMTP, the proposed method has been proven correct. Furthermore, this method overcomes the disadvantage of EMTP, which is only applicable for transient analysis of parallel conductors. As an example, the presented method is applied to evaluating the electromagnetic interference (EMI) to the shielded cable, whose shield is grounded at both ends, due to the switching operation in 500 kV air insulation substation (AIS).
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Issue Date: 05 September 2008
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