| This paper researched the calculation method of conductor surface electrical field and extraction of capacitance patameters based on BEM,also obtained the following results.1)Derivated the formulas of point and line model of BEM calculation system,and this will be used to electrical field calculation,to test insulation level and provide basis for insulation design further.2)Studied extraction method of capacitance parameters among converter valve system shielding covers,compared precision of extraction parameters between the model of cornea simplified and origanal ones.Ensured meeting the requirements of engineering precision,and extracted capacitance parameters rapidly using simplified models and provided evidences for insulating design next step.3)Examinated the precision of dots,lines and planes calculation models in BEM system and ensured it can satisfying the precision requirements when used to engineering calculation. |
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