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Risk assessment method for relative lightning parameters of distribution network

A technology for risk assessment and lightning parameters, applied in data processing applications, instruments, resources, etc., can solve problems such as deviations in lightning protection and management of distribution network lines

Active Publication Date: 2018-12-21
STATE GRID HUBEI ELECTRIC POWER RES INST +3
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Problems solved by technology

[0007] The patents or methods disclosed above, including other disclosed lightning hazard risk assessment methods, all use absolute values ​​for the risk assessment of lightning activity parameters such as ground flash density, and the assessment and division of risk levels are one-sided, which will affect the distribution network Lightning protection management work brings deviation

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  • Risk assessment method for relative lightning parameters of distribution network
  • Risk assessment method for relative lightning parameters of distribution network
  • Risk assessment method for relative lightning parameters of distribution network

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Embodiment Construction

[0028] The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention.

[0029] The invention relates to the technical field of lightning protection for overhead lines in power system distribution networks, in particular to a risk assessment method for relative values ​​of lightning parameters of distribution network lines. This method comprehensively evaluates the risk level of towers in a specific distribution network line by introducing lightning activity parameters such as the relative value of ground flash density and the relative value of lightning current amplitude induced overvoltage, and accurately finds out the towers with a relatively high level of lightning risk in a specific line. Protection is carried out in order to meet the goal of lightning damage control for distribution network lines in different regions.

[0030] Taking the lightning hazard risk assessmen...

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Abstract

The invention provides a risk assessment method for relative lightning parameters of distribution network lines, which relates to the lightning protection technical field of distribution network overhead lines of power system. A lightning activity parameter such as a relative value of that lightning flash density is introduced, The relative value of lightning current amplitude induced overvoltagedegree is used to comprehensively evaluate the tower risk level in a particular distribution network, and the towers with relatively high lightning risk level in a particular distribution network areaccurately found out for protection, in order to meet the differential lightning disaster control objectives of distribution network in different areas.

Description

technical field [0001] The invention relates to the technical field of lightning protection for overhead lines in power system distribution networks, in particular to a risk assessment method for relative values ​​of lightning parameters of distribution network lines. Background technique [0002] Compared with traditional high-voltage transmission line lightning protection, distribution network line lightning protection has significant differences and technical characteristics. High-voltage transmission lines (voltage level above 110kV) are generally iron tower structures. Lightning protection lines are erected on the lines, and special grounding grids are laid under the foundation of the iron towers to connect with the iron towers. Lightning counterattack), the lightning strike part is generally the lightning protection line or the top of the tower, and the lightning current is quickly released to the ground through the lightning protection line or the tower body. Under th...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0635G06Q50/06
Inventor 姚尧傅景伟李小平赵淳卢泽军汪涛吴军郑壮黄维宪郑凌娟张咏
Owner STATE GRID HUBEI ELECTRIC POWER RES INST
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