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A Method of Determining the Optimum Position of the External Network

A technology of leading ground net and main ground net, which is applied in the field of determining the optimal length of the connecting line of the ground net, can solve the problems affecting the resistance reduction effect of the ground net, and achieve the effect of both resistance reduction and economy

Inactive Publication Date: 2017-07-04
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] Since the connection line itself has a certain impedance, the length of the connection line will affect the resistance reduction effect of the external ground network

Method used

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  • A Method of Determining the Optimum Position of the External Network
  • A Method of Determining the Optimum Position of the External Network
  • A Method of Determining the Optimum Position of the External Network

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Embodiment Construction

[0026] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Among them, grounding electrode #1 and grounding electrode #2 are described by using vertical grounding electrodes. To enable those skilled in the art to better understand and implement the present invention, the examples given are not intended to limit the present invention.

[0027] figure 1 It is the unequal potential model of the grounding system, which is composed of #1 main ground grid, #2 external ground grid and connecting lines; the voltage of #1 main ground grid is V 1 , the current flowing into the ground is I 1 ; The voltage of the #2 lead-out network is V 2 , the current flowing into the ground is I 2 ; The current of the connection line is I 2 .

[0028] figure 2 is the unequal potential model under the vertical ground electrode, which is composed of vertical ground electrode #1, vertical...

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Abstract

The invention discloses a method for determining the optimal position of an outer-introduced ground network. The method is characterized by comprising the following steps: building an unequal-potential model for a main ground network and the outer-introduced ground network, and calculating the ground resistance of a ground system; building a target function in which the ground resistance of the ground system is minimum in order to connect a digital optimization model of which the linear length is a variable. An optimal connection line length is obtained with a genetic algorithm, so that the optimal position of the outer-introduced ground network can be determined, the best resistance reducing effect of the out-introduced ground network is achieved, and meanwhile the economical efficiency is considered.

Description

technical field [0001] The invention discloses a method for determining the optimal length of a connection line of an external ground network, relates to the technical field of electric power system grounding, and is suitable for reducing grounding resistance by using an external ground network in the field of electric power engineering construction and determining the position of an external ground network. Background technique [0002] With the development of modern power grids in the direction of ultra-high voltage, large capacity, and long distances, the requirements for the safe and stable operation of power systems are getting higher and higher, so a good grounding system is required. In order to reduce the grounding resistance of the grounding system of the power substation and ensure the safe and reliable operation of the power system, auxiliary grounding measures are often used in engineering to reduce resistance. [0003] Since the connection line itself has a cert...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/04G06N3/12
Inventor 潘文霞周建文
Owner HOHAI UNIV
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