Observation of Lightning Overvoltage in a 500 kV Switching Station

Sonoda, Toshio; Morii, Hiroshi; Sekioka, Shozo

doi:10.1109/tpwrd.2016.2571288

Cited by 11 publications

(5 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The proposed method uses the uniform distributedparameter line representation for transmission towers and hence does not need pre-NEA, which is required for the recently developed accurate EMT analysis models of transmission towers. Note that a method similar to the proposed method was presented in [34], [35]. However, using the proposed method, this paper clarifies the mechanism of the LEMP impact on lightning overvoltages of transmission lines.…”

Section: Introductionmentioning

confidence: 76%

Incorporating the LEMP Impact on Lightning Surge Analysis of Transmission Lines in EMT Simulators

Yamanaka,

Ishimoto,

Tatematsu

2024

IEEE Trans. Power Delivery

View full text Add to dashboard Cite

Electromagnetic transient (EMT) analysis is an important tool to estimate the lightning performance of transmission lines. In this paper, we advanced the EMT analysis method for transmission lines by incorporating the lightning electromagnetic pulse (LEMP) impact. Analyses by the proposed method clarify the mechanism of the LEMP impact on lightning overvoltages of transmission lines: the LEMP induces voltages having a polarity opposite to those generated by the lightning current, and these LEMP-induced voltages increase the insulator voltages; the EMT analysis without considering the LEMP impact provides lower insulator voltages for both struck and nearby towers. The models used in the proposed method can be synthesized immediately and straightforwardly from the geometries of the towers and lines, and the analysis can be performed within a short time. Moreover, various transmission lines-500, 275, and 77 kV class vertical double-circuit lines and a 275 kV class horizontal single-circuit line-were studied assuming a ground resistivity ranging from 0 to 5000 m, and all the results were validated by the three-dimensional finite-difference timedomain method for solving Maxwell's equations. Thus, the proposed method is a powerful tool and has a potential impact on the lightning performance assessment of transmission lines and insulation coordination studies.

show abstract

Section: Introductionmentioning

confidence: 76%

Incorporating the LEMP Impact on Lightning Surge Analysis of Transmission Lines in EMT Simulators

Yamanaka,

Ishimoto,

Tatematsu

2024

IEEE Trans. Power Delivery

View full text Add to dashboard Cite

show abstract

“…The reason might be the overvoltage of indirect struck phase here is not only affected by the leader and return stroke, but also affected by the overvoltage of direct struck phase. In [21], they describe that the initial spike voltage of non‐lightning‐striking phases is generated by the return stroke current in the lightning channel and they have opposite polarity. The spike was also observed in [22].…”

Section: Resultsmentioning

confidence: 99%

Three‐phase overvoltage at lightning strike point due to direct triggered lightning to the phase wire of 10 kV power distribution line

Wang

Zhao

et al. 2022

IET Generation Trans & Dist

View full text Add to dashboard Cite

This paper reports the observation results of three‐phase overvoltage at the lightning strike point of a 1.5 km, 10 kV power distribution line that was struck directly by rocket triggered lightning to its phase wire C. The arrester of the direct struck phase at the lightning strike point operated in all return strokes corresponding to return stroke current from −3.3 kA to −32.9 kA. The waveform of direct struck phase includes an initial spike before negative peak, operation area of metal oxide varistor, and the final attenuation with oscillation. The overvoltage waveforms of the indirect struck phase at the lightning strike point show a small initial negative peak, rapid transition to a large positive peak, and the final negative attenuation with oscillation. The negative peak value of the indirect struck phase at lightning strike point ranged from −4.1 kV to −25.2 kV and that of the direct struck phase was between −78.1 kV and −167.8 kV. The positive peak value of indirect struck phase was between 0.2 kV and 49.8 kV. The negative peak value, zero‐crossing time and the peak‐to‐peak value of voltage all have a good linear relation with the peak value of lightning return stroke current.

show abstract

“…Faults on transmission lines can generate a huge current flow through the cables, unbalance the phases, or generate overvoltages (i.e., back flashover, direct lightning hit to a phase conductor, and lightning-induced voltage) [27]. When a fault occurs, the characteristic impedance values can This work is licensed under a Creative Commons Attribution 4.0 License.…”

Section: A Current Methods Of Inspection Faults By Dnos and Tnosmentioning

confidence: 99%

An Advanced Unmanned Aerial Vehicle (UAV) Approach via Learning-Based Control for Overhead Power Line Monitoring: A Comprehensive Review

Foudeh

Luk²,

Whidborne

2021

IEEE Access

View full text Add to dashboard Cite

Detection and prevention of faults in overhead electric lines is critical for the reliability and availability of electricity supply. The disadvantages of conventional methods range from cumbersome installations to costly maintenance and from lack of adaptability to hazards for human operators. Thus, transmission inspections based on unmanned aerial vehicles (UAV) have been attracting the attention of researchers since their inception. This article provide a comprehensive review for the development of UAV technologies in the overhead electric power lines patrol process for monitoring and identifying faults, explores its advantages, and realizes the potential of the aforementioned method and how it can be exploited to avoid obstacles, especially when compared with the state-of-the-art mechanical methods. The review focuses on the development of advanced Learning Control strategies for higher manoeuvrability of the quadrotor. It also explores a suitable recharging strategies and motor control for improved mission autonomy.

show abstract

Observation of Lightning Overvoltage in a 500 kV Switching Station

Cited by 11 publications

References 16 publications

Incorporating the LEMP Impact on Lightning Surge Analysis of Transmission Lines in EMT Simulators

Incorporating the LEMP Impact on Lightning Surge Analysis of Transmission Lines in EMT Simulators

Three‐phase overvoltage at lightning strike point due to direct triggered lightning to the phase wire of 10 kV power distribution line

An Advanced Unmanned Aerial Vehicle (UAV) Approach via Learning-Based Control for Overhead Power Line Monitoring: A Comprehensive Review

Contact Info

Product

Resources

About