Protected Approaches to Power Supply Inputs of Railway Automation and Remote control Devices under Lightning Strikes

Aleksandr Solov&#039;ev

doi:10.20295/2412-9186-2026-12-02-114-127

UDC

656.25 621.315.1

PROTECTED APPROACHES TO POWER SUPPLY INPUTS OF RAILWAY AUTOMATION AND REMOTE CONTROL DEVICES UNDER LIGHTNING STRIKES Protected Approaches to Power Supply Inputs of Railway Automation and Remote control Devices under Lightning Strikes

АА Аа

Published in Transport automation research · Pages 114–127 · Rubric: VIABILITY, RELIABILITY, SAFETY

DOI: https://doi.org/10.20295/2412-9186-2026-12-02-114-127

Received: 23.06.2026 Accepted: 23.06.2026 Published: 23.06.2026

Authors

Aleksandr Solov'ev

Emperor Alexander I St. Petersburg State Transport University Postgraduate Student · “Automation and Remote Control on Railways” Department · Russian Federation

ABSTRACT

the article addresses the protection of power supply inputs of railway automation and remote-control devices against lightning overvoltages propagating along 10 kV overhead autoblocking lines. It is shown that during direct and repeated lightning strikes, the surge arrester installed directly at the protected facility may be subjected to unacceptable current and energy loads, which reduces the stability of the protection system. To investigate these processes, an integrated mathematical model of the system “overhead line – power supply input – protective devices” has been developed, including a threephase distributed-parameter line model, a lightning impact source based on the Heidler function, a relay cabinet power supply input model, a frequency-dependent grounding system model, and nonlinear models of surge arresters and multi-chamber arresters. The numerical implementation of the model was carried out in MATLAB. Computational experiments were performed for single and multiple lightning strikes under various protected-approach configurations and different arrangements of protective devices along the line. It was found that the uniform installation of surge arresters along the line does not provide the required stability under high-energy 10/350 μs impulses due to the exceedance of the permissible energy load of the devices. It is shown that the use of multi-chamber arresters makes it possible to significantly reduce the voltage at the power supply input and the load on the input surge arrester. The results obtained confirm the promise of spatially organized protection schemes that provide step-by-step limitation of the lightning wave and redistribution of impulse energy among several devices under single and multiple lightning strikes.

KEYWORDS

lightning strike, mathematical model, protected approaches, impulse overvoltages, railway automation and remote control

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GOST

Solov'ev A. D. Protected Approaches to Power Supply Inputs of Railway Automation and Remote control Devices under Lightning Strikes // . 2026. pp. 114-127. DOI: https://doi.org/10.20295/2412-9186-2026-12-02-114-127. (Date of access 19.08.2026).

MLA

Aleksandr Solov'ev. "Protected Approaches to Power Supply Inputs of Railway Automation and Remote control Devices under Lightning Strikes." (2026): 114-127. DOI: https://doi.org/10.20295/2412-9186-2026-12-02-114-127.

APA

Solov'ev A. D. (2026). Protected Approaches to Power Supply Inputs of Railway Automation and Remote control Devices under Lightning Strikes. , 114-127. https://doi.org/10.20295/2412-9186-2026-12-02-114-127

Chicago

Aleksandr Solov'ev. "Protected Approaches to Power Supply Inputs of Railway Automation and Remote control Devices under Lightning Strikes." , no. (2026): 114-127. https://doi.org/10.20295/2412-9186-2026-12-02-114-127.

WIKI

{{cite journal | author = Solov'ev A. D. | title = Protected Approaches to Power Supply Inputs of Railway Automation and Remote control Devices under Lightning Strikes | journal = | year = 2026 | pages = 114-127 | doi = 10.20295/2412-9186-2026-12-02-114-127 }}

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PROTECTED APPROACHES TO POWER SUPPLY INPUTS OF RAILWAY AUTOMATION AND REMOTE CONTROL DEVICES UNDER LIGHTNING STRIKES Protected Approaches to Power Supply Inputs of Railway Automation and Remote control Devices under Lightning Strikes

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