A method and system for measuring voltage and current characteristics of continuous lightning strikes along a line
A technology of current characteristics and measurement methods, which is applied in the field of measurement of continuous lightning strike propagation voltage and current characteristics, and can solve problems affecting the effectiveness of lightning protection measures and lack of experimental research
Active Publication Date: 2022-07-08
GUANGDONG POWER GRID CO LTD +1
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Problems solved by technology
[0003] At present, most of the research on lightning intrusion waves of continuous lightning strikes in substations is based on continuous lightning strikes of 2.6 / 50μs standard lightning current waveforms twice in a row or at a certain time interval. Differences in waveform parameters will affect the effectiveness of lightning protection measures for continuous lightning strikes
[0004] Relevant scholars at home and abroad mostly use simulation analysis to study the lightning intrusion wave of continuous lightning strikes, and lack of relevant experimental research. more accurate results
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[0045] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0046] It should be understood that the step numbers used in the text are only for the convenience of description, and are not intended to limit the order in which the steps are performed.
[0047] It should be understood that the terms used in the present specification are only for the purpose of describing particular embodiments and are not intended to limit the present invention. As used in this specification and the appended clai...
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The invention discloses a method and system for measuring voltage and current characteristics of continuous lightning strikes along a line. The method includes: designing an artificial lightning strike test loop and establishing an artificial lightning strike test loop by statistically analyzing the parameter characteristics of the continuous lightning strike lightning current in an artificial lightning strike system in a target area. The corresponding electromagnetic transient simulation model is used to simulate and determine the effective length of the drainage rod, the length of the lead wire, the grounding resistance of the end, and the voltage measurement device and current measurement device required for the test. Lightning test, and synthesizing simulation data and test results, obtain the characteristics of voltage and current propagating along the line of continuous lightning strikes, which can provide reference and basis for substation protection against lightning intrusion waves of continuous lightning strikes.
Description
technical field [0001] The invention relates to the technical field of lightning data measurement, in particular to a method and system for measuring the characteristics of voltage and current propagating along a line of continuous lightning strikes. Background technique [0002] The main cause of lightning strike accidents in substations is the lightning intrusion waves propagated to the station along the line generated by lightning counterattack or shielding, which cause the voltage on the equipment in the station to exceed its impact insulation level and suffer damage. Therefore, the protection of substations against lightning intrusion waves is very important. Importantly, the protection measures for substations against lightning intrusion waves mainly include installing line arresters and incoming line section protection. [0003] At present, most of the research on lightning intrusion waves of continuous lightning strikes in substations is based on continuous lightning...
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IPC IPC(8): G01R29/08
CPCG01R29/0842G01R29/0892Y02E60/00
Inventor 赵晓凤杨贤李谦李兴旺邰彬郑晓光庞小峰孙帅丘欢洪刚
Owner GUANGDONG POWER GRID CO LTD