Development of a Lightning Current Waveform Measuring System for 500 kV Overhead Transmission Lines

Haruki,; Sunaga,; Kimata,; Katoh,

doi:10.1109/mper.1989.4310832

Cited by 1 publication

(1 citation statement)

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“…In the study of the lightning protection design of transmission lines, obtaining true and accurate lightning parameters is the basis of the lightning protection design of transmission lines [4,5]. Therefore, it is very urgent and necessary to use the lightning current sensor suitable for the transmission system to study the measurement form of the sensor on the transmission line and realize the measurement of the key lightning current parameters [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Lightning Current Measurement Form and Arrangement Scheme of Transmission Line Based on Point-Type Optical Current Transducer

Ge,

Yin,

Wang

2023

Sensors

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Lightning strikes are the main cause of transmission line faults, and the accurate lightning current number is an important basis to guide scientific lightning protection. The use of sensors with excellent sensing performance to carry out lightning current monitoring on transmission lines is beneficial to the accumulation of key parameters of original lightning strikes, so it is necessary to study the lightning current measurement structure of transmission lines. In this paper, an optical current-sensing unit is used to monitor the lightning current on transmission lines. A measuring structure that can monitor key parameters of the lightning current under different types of lightning strikes is proposed. First, establish the lightning current return channel model and the equivalent model of the tower, study the influence of the transmission tower on the current in the lightning channel, and analyze the direct measurement position of the lightning current on the tower; establish the multi-wave impedance model of the tower, and build a multi-base tower. The simulation model of the transmission system analyzes the transmission characteristics of the lightning current on the transmission line and the lightning protection line in the case of different types of faults; from the perspective of the measurement of key parameters of the lightning current, the lightning current measurement structure of the transmission system is constructed to analyze different lightning strikes. The measurement effect of each monitoring position in the case of a lightning strike and the waveform characteristics of the fault current in the case of insulator flashover are analyzed.

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