• Title, Summary, Keyword: First short stroke lightning current

Search Result 2, Processing Time 0.03 seconds

Parameters Optimization of Impulse Generator Circuit for Generating First Short Stroke Lightning Current Waveform

  • Eom, Ju-Hong;Cho, Sung-Chul;Lee, Tae-Hyung
    • Journal of Electrical Engineering and Technology
    • /
    • v.9 no.1
    • /
    • pp.286-292
    • /
    • 2014
  • This paper presents the parameters optimization technology for generating the first short stroke lightning current waveform($10/350{\mu}s$) which is necessary for the performance tests of components of lightning protection systems, as required under IEC 62305 and the newly amended IEC 62561. The circuit using the crowbar device specified in IEC 62305 was applied to generate the lightning current waveform. To find the proper parameters of the circuit is not easy because the circuit consists of two parts; circuit I, which relates to the front of current waveform, and circuit II, which relates to the tail. A simulation in PSpise was carried out to find main factors related to the front and tail of $10/350{\mu}s$. The lightning current generator was developed by utilizing the circuit parameters found in the simulation. In the result of experiments, new parameters of the circuits need to be changed because of the difference between the simulation and the experiment results. Using the iterative method, the optimized parameters of the circuits was determined. Also a multistage-type external coil and a damping resistor were proposed to make the efficiency of generation to enhance. According to the result in this paper, an optimized first short stroke lightning current waveform was obtained.

Development of Lightning Current Generator and Technology for Generating the First Short Stroke Lightning Current Using a Crowbar Device (Crowbar 장치를 이용한 최초 단시간뇌격전류 발생기술 및 뇌격전류발생기 개발)

  • Eom, Ju-Hong;Lee, Tae-Hyung;Kwon, Ki-Ryang;Cho, Sung-Chul
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
    • /
    • v.25 no.1
    • /
    • pp.93-100
    • /
    • 2011
  • This paper presents a technical study for the first short stroke lightning current generator using a crowbar device. The so-called crowbar-technology is most common to make 10/350[${\mu}s$] impulse currents with high amplitude, and the lightning current generator with crowbar device has an economic advantage than the nominal RLC current generator. But both the operating efficiency and the operating reliability of crowbar spark gap are very important to design the current generator. So, the peaking circuit which consists of small capacitors and a spark gap is applied. And the multi-step coil for controlling the circuit constant at the different test conditions is used. The presented test facility is designed to perform impulse tests with amplitudes up to 50[kA] of 10/350[${\mu}s$].