A More Accurate Calculation Method of Surface Electric Field Intensity of Bundled Conductors

As for the design of UHV transmission lines, the calculation of surface electric field intensity of bundled conductors is one of the main problems. Based on charge simulation method a more accurate calculation method of surface field intensity of bundled conductors is proposed, in which the position of simulation charges is adaptively determined and the formulae to calculate maximal field intensity of each phase are deduced, so the maximal field intensity on the surface of arbitrary conductor and that at any spatial point around the conductor can be directly calculated. Less number of simulation charges are used in the proposed method and the calculation is simple. The results of case study show that the proposed method is accurate.