Research on power frequency arc movement process of insulator in ring shape parallel gap lightning protection device

2014 ◽  
Author(s):  
Qi Wang ◽  
Wenxia Sima ◽  
Qing Yang ◽  
Tao Yuan ◽  
Zhi Zhang
Keyword(s):  
Lightning Protection ◽  
Protection Device ◽  
Movement Process ◽  
Ring Shape ◽  
Power Frequency

Lightning protection of the object located on the slope

2021 ◽  
pp. 93-103
Author(s):  
A. A. Kosyakov ◽  
Keyword(s):  
Pulse Voltage ◽  
Lightning Protection ◽  
Engineering Practice ◽  
Protection Device ◽  
Lightning Strikes ◽  
Protection Zones ◽  
Pulse Voltage Generator ◽  
Voltage Generator ◽  
Protected Object

The article points out the drawback of all the current instructions for the lightning protection device: the lack of instructions for calculating the lightning protection zones of an object located on a slope. The methods of applying the current instructions for the lightning protection device when placing an object on a slope are given, based on the assumption that lightning strikes the lightning rods vertically and perpendicular to the slope. The features of the choice of lightning protection characteristics (calculated points of the protected object, calculated heights of lightning rods, methods of constructing lightning protection zones) are described. A method for calculating the lightning protection zones of an object located on a slope is proposed, based on the assumption that lightning strikes lightning rods perpendicular to the slope, in particular, the concept of the axis of a conditional lightning rod shifted on the object plan for calculating lightning protection zones is introduced. The consequences of the application in engineering practice of the methodology for calculating the lightning protection zones of an object located on a slope, based on the assumption that lightning strikes the lightning rods perpendicular to the slope, are indicated. Using a pulse voltage generator, tests were performed on a model of a lightning rod located on a slope in order to determine the direction of lightning strikes-vertical or perpendicular to the slope. It was determined experimentally that the proposed method for calculating the lightning protection zones of an object located on a slope, based on the assumption that lightning strikes lightning rods perpendicular to the slope, should be used in cases where the protected objects are located on slopes with an angle of more than 25°.

scholarly journals Study on Impulse Breakdown Characteristics of Internal-Gap Lightning Protection Device Applied to 35 kV Distribution Line

Energies ◽  
2018 ◽  
Vol 11 (7) ◽  
pp. 1758 ◽  
Author(s):  
Zhen Fang ◽  
Bowen Wang ◽  
Jiazheng Lu ◽  
Zhenglong Jiang
Keyword(s):  
Lightning Protection ◽  
Protection Device ◽  
Distribution Line ◽  
Internal Gap

Compact Covered Distribution Lines Supported by Triangle Spacers: Configuration and Benefits

2009 ◽  
Vol 10 (2) ◽  
Author(s):  
Jinliang He ◽  
Shuiming Chen ◽  
Rong Zeng
Keyword(s):  
Distribution Network ◽  
Lightning Protection ◽  
Mechanical Theory ◽  
Movement Process ◽  
Distribution Lines ◽  
Distribution Line ◽  
Phase Conductors ◽  
Covered Conductors ◽  
The Relationship

Adopting covered conductors and compact configuration has become the tendency in the renovation of distribution network in China. Advantages of compact configuration are discussed in this paper, which can further save the passage of distribution line, and can easily realize multiple lines in a pole. The movement process of phase conductors is analyzed by the Chord Forced Equation of the mechanical theory to obtain the relationship between the phase spacing of triangle spacer and the span between two neighboring spacers. The suitable phase spacing and spacer span are presented for polymeric and composite spacers. The superiority of compact configuration against lightning protection comparing with traditional distribution lines was analyzed.

scholarly journals The Development of an Intelligent Zinc Oxide Lighting Arrester Tester

2021 ◽  
Vol 2137 (1) ◽  
pp. 012045
Author(s):  
Aihua Liu ◽  
Shuning Ma
Keyword(s):  
Zinc Oxide ◽  
Mutual Inductance ◽  
Lightning Protection ◽  
Operating Parameters ◽  
Protection Device ◽  
Reliable Operation ◽  
Front End ◽  
Acquisition Mode ◽  
Testing Accuracy ◽  
Measurement Efficiency

Abstract Zinc oxide arrester is often used as lightning protection device in 10KV distribution network. In order to check the reliable operation of the zinc oxide arrester, preventive tests are often carried out. In this project, the intelligent tester adopts high-precision clamp current mutual inductance technology as the front-end acquisition mode of current signals; Magnetic isolation technology is used to ensure the accuracy of current and voltage sampling and the anti-interference ability and testing accuracy of the instrument are improved by using fast Fourier transform for data processing. The integrated application of several technologies provides a basis for judging the operating state of the 10kV zinc oxide arrester. The charged measurement of operating parameters of 10kV zinc oxide arrester is realized and the measurement efficiency is improved.

Research on Integrated Mobile Lightning Protection Device and Technology

2012 ◽  
Author(s):  
Xiao-gang Zhao ◽  
Yi Zhou ◽  
Yu-zhang Guo ◽  
Heng Li ◽  
Li-xin Zhao
Keyword(s):  
Lightning Protection ◽  
Protection Device

MULTI-STATE RELIABILITY MODELS FOR LIGHTNING HAZARD ASSESSMENT

2004 ◽  
Vol 11 (01) ◽  
pp. 35-46
Author(s):  
MAREK SZCZERBIŃSKI
Keyword(s):  
Hazard Assessment ◽  
Reliability Theory ◽  
Lightning Protection ◽  
Protection Device ◽  
Device Design ◽  
Lightning Stroke ◽  
Reliability Models ◽  
Design Construction

Lightning protection of buildings has been practised for ages but we still lack the model in terms of reliability theory. The paper is a proposition to apply some reliability models in the lightning protection. The building equipped with lightning protection is treated as the 4-state object. The intensities of transition from one state to another have been found on the basis of partial probabilities of inadmissible damages caused by a lightning stroke. The values of these intensities can be calculated on the basis of so called "partial risks" which are determined by entirety of the circumstances referring to the structure (the design, construction, content of the building, lightning protection device design, relief, geographical situation etc.).

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