A method and system for optimal phase sequence determination of four-circuit transmission line on that same tower

A technology of transmission line and phase sequence, which is used in electrical digital data processing, special data processing applications, instruments, etc.

Active Publication Date: 2019-03-01
CHINA ELECTRIC POWER RES INST +3
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  • Claims
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Problems solved by technology

[0006] The technical solution of the present invention provides a method and system for determining the optimal phase sequence of four-circuit transmission lines on the same tower to solve the problem of how to determine the optimal phase sequence of four-circuit transmission lines on the same tower

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  • A method and system for optimal phase sequence determination of four-circuit transmission line on that same tower
  • A method and system for optimal phase sequence determination of four-circuit transmission line on that same tower
  • A method and system for optimal phase sequence determination of four-circuit transmission line on that same tower

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Embodiment Construction

[0041] Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to disclose the present invention in detail and completely. Invention and fully convey the scope of the present invention to those skilled in the art. The terms in the exemplary embodiments shown in the drawings do not limit the present invention. In the drawings, the same units / elements use the same reference signs.

[0042] Unless otherwise specified, the terms (including scientific and technological terms) used herein have the usual meanings to those skilled in the art. In addition, it is understandable that the terms defined in commonly used dictionaries should be understood as having consistent meanings in the context of their related fields, and should not be understood as idealized or overly for...

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Abstract

The invention discloses a method and a system for optimal phase sequence determination of four-circuit transmission line on that same tower. The method comprises the following steps: a calculation model of a power frequency electric field of the four-circuit transmission line with the same tower is established; when the maximum electric field intensity is less than a first predetermined value, theheight of a conductor to ground is obtained; and the lowest height of the conductor is determined. The calculation model of audible noise is established. Based on the calculation model of the lowestheight of the conductor and the audible noise, the audible noise values at the evaluation points under all possible phase sequence arrangements are calculated by the exhaustive method. The calculationmodel calculates the distribution of the audible noise value, and eliminates the phase sequence arrangement mode of the asymmetric distribution of the audible noise value on both sides of the conductor center. A smaller noise value corresponding to a smaller one of the audible noise values is obtained according to a predetermined number in the selected phase sequence arrangement mode. A phase sequence arrangement of a region width having an electric field strength greater than a second predetermined value is calcuated. A phase sequence arrangement corresponding to the smallest noise value corresponding to the audible noise value and the smallest region width corresponding to the electric field strength greater than the second predetermined value is selected.

Description

Technical field [0001] The invention relates to the technical field of transmission line design, and more specifically, to a method and system for determining the optimal phase sequence of a four-circuit transmission line on the same tower. Background technique [0002] With the rapid development of my country's society and economy, the demand for electricity is growing rapidly, and the extremely uneven distribution of power generation energy and power load in my country determines that the construction of a strong smart grid is the strategic goal of my country's power grid development, which has the characteristics of long-distance and large-capacity transmission. The key technology of multi-circuit transmission on the same tower is its solid foundation and key link. [0003] The 750kV power grid in Northwest my country has developed rapidly and has gradually formed a network. The planned construction of multiple lines passes through the tight areas of the transmission corridor aro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/367Y02E60/00
Inventor 张业茂万保权路遥陈豫朝刘兴发干喆渊谢辉春李妮倪园王森张鹏赵军王延召刘震寰万皓黄锐
Owner CHINA ELECTRIC POWER RES INST
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