Shielding analysis-optimization method and system for 3D ground power-frequency electric field of UHVAC power transmission line
A technology of power frequency electric field and transmission line, applied in electromagnetic field characteristics, measurement of electrical variables, measurement devices, etc., can solve problems such as inability to obtain shielding effect and complex situations
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Embodiment 1
[0113] As shown, as shown in the figure, figure 1 It is a flowchart of the present invention. figure 2 It is the flow chart of three-dimensional power frequency electric field calculation when erecting shielded wires. image 3 It is calculated for the schematic diagram of line charge division in the present invention. Figure 4 Create a schematic diagram for the local coordinates of the invention. The three-dimensional shielding analysis and optimization method for the ground power frequency electric field of the UHV AC transmission line provided in this embodiment includes the following steps:
[0114] S1 establishes a three-dimensional power frequency electric field shielding effect analysis calculation model;
[0115] S2 sets the shielding effect first threshold and shielding line optimization objective function;
[0116] S3 uses the analog charge method to calculate the three-dimensional power frequency electric field in the sensitive area when erecting shielded wires...
Embodiment 2
[0169] Such as Figure 5 as shown, Figure 5 It is a block diagram of the ground three-dimensional power frequency electric field shielding analysis and optimization system of UHV AC transmission line of the present invention. The ground three-dimensional power frequency electric field shielding analysis and optimization system for UHV overhead AC transmission lines provided in this embodiment includes a shielding effect calculation model establishment module, an initial value setting module, a shielded line optimization objective function calculation module, an analog charge method calculation module, a sensitive Area first threshold judgment module and optimal shielding scheme output module;
[0170] The shielding effect calculation model establishment module is used to establish a three-dimensional power frequency electric field shielding effect analysis calculation model;
[0171] The initial value setting module is used to set the first threshold value of the shielding ...
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