Simulation charge method-based alternating current transmission line electromagnetic environment simulation calculation method

Abstract

The invention relates to a simulation charge method-based alternating current transmission line electromagnetic environment simulation calculation method, which comprises the following steps of: firstly, establishing line model coordinates, and determining a voltage to ground and a potential coefficient; calculating a wire simulation charge value; and finally calculating the electric field intensity of any point in the space. The method is matched with programming simulation software for use; various parameters of the line are substituted into the method model; the spatial maximum electric field values of different potentials around the alternating current transmission line are simulated; the method can be applied to transmission line planning and design stages; parameter variables such asconductor height to ground, conductor span, line voltage, conductor splitting equivalent radius and the like are changed; a line design scheme with the minimum electric field intensity and predictedfield intensity values of surrounding electromagnetic environment sensitive points are simulated and found out; complaints after line construction are avoided, subsequent construction and governance expenses are reduced, for some measurement points which are difficult to reach and a large amount of repeated measurement work is needed, the workload of on-site measurement is reduced, and the on-sitetest efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of AC transmission lines, in particular to a simulation calculation method for the electromagnetic environment of the AC transmission line based on the simulated charge method. Background technique [0002] The power frequency electric field and power frequency magnetic field generated by the AC UHV transmission line and the AC EHV transmission line in the surrounding space are theoretically the same, but when the voltage level rises to the UHV level, the power frequency electromagnetic field near the transmission line The intensity will increase significantly. The impact of power frequency electromagnetic fields on human health and ecology has been the focus of attention in recent years. The simulated charge method was proposed in the 1960s and is the most widely used method for calculating electromagnetic fields in electrostatic fields. The uniqueness theorem of the electromagnetic field and the mirror i...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a solution to the problem of limited space for measurement points under actual measurement conditions, and to propose a method for simulating the electromagnetic environment of AC transmission lines based on empirical formulas by simulating the charge method. A simulation calculation method for the electromagnetic environment of AC transmission lines based on the simulated charge method based on parameters such as voltage and potential coefficient, and obtaining the electric field strength of the space environment by simulation

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