Calculation method of spatial circuit distribution parameter matrix based on complex image

Abstract

The invention discloses a calculation method of a spatial circuit distribution parameter matrix based on a complex image. The method comprises the followings steps: step 1, carrying out numbering andsegmenting on each circuit; step 2, collecting numbered spatial circuit parameters, which comprise the radius of a wire, the direct current resistance of the wire, the models of poles and towers, thethree-dimensional coordinates of the poles and the towers and soil resistance rate; step 3, calculating the self-potential coefficient of each circuit and the mutual potential coefficient between circuits by adopting an average potential method according to the collected spatial circuit parameters, obtaining a potential matrix according to a calculated potential coefficient, and then carrying outpotential matrix inversion to obtain a capacitance matrix; and step 4, calculating the impedance parameter matrix of each circuit according to a complex image method, wherein the mutual impedance parameter between the circuits is calculated according to different position relationships between spatial circuits. The technical problems of relatively great errors existing in inductance and impedanceparameters during calculating the distribution parameters of the spatial circuits in the prior art and the like are solved.

Description

Technical field [0001] The invention belongs to the field of power transmission line parameter calculation, and in particular relates to a method for calculating a spatial line distribution parameter matrix based on a complex mirror image. Background technique [0002] Transmission line parameters are the basis for the analysis of power system transmission lines. With the development of power grids, there are more and more parallel lines on the same pole in engineering practice, and the spatial distribution of transmission lines is becoming denser and more complex. Lines also need to consider factors such as line frequency and soil, so the calculation of transmission line parameters is more complicated. [0003] The calculation of the distribution parameters of the space circuit is mainly the calculation of the capacitance and impedance to the ground, which includes not only the self-capacitance and self-impedance, but also the line parameters that reflect the coupling between the ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for calculating the distribution parameter matrix of space lines based on the complex image, so as to solve the problems of relatively large errors in the inductance and resistance parameters existing in the calculation of the distribution parameters of space lines in the prior art. question

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