The Development of an Intelligent Zinc Oxide Lighting Arrester Tester

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.

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Simulation of PV and Wind Hybrid Power System

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.953-954.591 ◽

2014 ◽

Vol 953-954 ◽

pp. 591-594

Author(s):

Ze Jia Hua ◽

Jing Wu ◽

Ze Ya Mi ◽

Jia Lei Zhu

Keyword(s):

Power System ◽

Energy Analysis ◽

Dynamic Change ◽

Reliable Operation ◽

Operation Condition ◽

Work Patterns ◽

Hybrid Power System ◽

Hybrid Power ◽

Front End ◽

System Energy

The PV and wind hybrid power system uses the front-end DC-DC conversion circuit, the system's overall output power is unified deployment and controlled, through elaborating the component characteristics and assessing mathematical model of the actual obtained, more accurately determines operation condition of the system per hour. The system energy analysis of flow and motion makes the system in dynamic change switch from the different forms of work patterns and operation, completing the corresponding control, so as to realize the optimization of system and reliable operation.

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Lightning protection of the object located on the slope

Herald of the Ural State University of Railway Transport ◽

10.20291/2079-0392-2021-1-93-103 ◽

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°.

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Research and application of a new jet stream arc extinguishing gap lightning protection device

2014 International Conference on Lightning Protection (ICLP) ◽

10.1109/iclp.2014.6973450 ◽

2014 ◽

Author(s):

Jufeng Wang ◽

Wei Guo ◽

Guodong Li ◽

Dong Wu ◽

Xue Liang ◽

...

Keyword(s):

Lightning Protection ◽

Jet Stream ◽

Protection Device

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Design of Power Supply for Mining Belt Conveyor Integrated Protection Device KHP178k-z Based on Topswitch-JX

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.614.241 ◽

2014 ◽

Vol 614 ◽

pp. 241-244

Author(s):

Hai Zhu Yang ◽

Zeng Liang Zhang

Keyword(s):

Power Supply ◽

Protection Device ◽

Belt Conveyor ◽

Reliable Operation ◽

Output Waveform ◽

Output Quality ◽

Belt Conveyors

Mining belt conveyor integrated protection device KHP178k-z is an important device for the supervision and protection of the belt conveyors. A new power supply based on TOPSwitch-JX is designed in this paper to ensure the reliable operation of the device. Applying TOPSwitch-JX, the circuit of the power supply is simplified and the output quality is improved. Experiments show that the output waveform is stable and the ripple is small. The power supply designed is effective to meet the requirements of mining belt conveyor integrated protection device KHP178k-z.

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