Method and system for measuring characteristics of propagation voltage and current along continuous lightning stroke

Abstract

The invention discloses a method and a system for measuring characteristics of propagation voltage and current along a continuous lightning stroke. The method comprises the steps of designing an artificial lightning triggering test loop and establishing a corresponding electromagnetic transient simulation model by statistically analyzing parameter characteristics of continuous lightning stroke lightning current in an artificial lightning triggering system in a target area; performing simulation to determine the effective length of a drainage rod, the length of a leading-out wire, the tail end grounding resistance and a voltage measuring device and a current measuring device needed by the test, setting a manual lightning triggering test loop on site, performing a manual lightning triggering test, and integrating the simulation data and test results to obtain the voltage and current characteristics of continuous lightning stroke propagation along the line. Reference and basis can be provided for the transformer substation to protect lightning invasion waves of continuous lightning strokes.

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 continuous lightning strike. Background technique [0002] The main cause of lightning strike accidents in substations is the lightning intrusion wave that propagates along the line to the substation generated by lightning counterattack or shielding, which causes 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. Important, the protection measures for substations against lightning intrusion waves mainly include the installation of line arresters and the protection of incoming lines. [0003] At present, most of the research on lightning intrusion waves of continuous lightning strikes in substations is based on continuous lig...

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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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