DOA-enhanced charge simulation method for accurate electric-field evaluation and optimized mitigation under 750 kV transmission lines
Year: 2026
Type: article
Abstract: Precise electromagnetic field assessment and mitigation under extra-high-voltage (EHV) transmission lines are critical for ensuring public health and system operational safety. However, conventional calculation techniques, such as the Charge Simulation Method (CSM), suffer from manual charge placement inefficiencies, while domain-based numerical methods are computationally heavy for infinite air domains. This paper proposes a novel, automated computational framework that integrates the mesh-free CSM with the advanced Dhole Optimization Algorithm (DOA) to simultaneously optimize fictitious charge positions and physical shielding wire layouts for a 750 kV transmission line. Numerical validation demonstrates that the proposed CSM-DOA framework reduces the maximum boundary potential error to an unprecedented level, reaching a value that can be considered negligible in a highly competitive execution time of less than 3 seconds, structurally outperforming traditional Genetic Algorithm (GA) and Particle Swarm Optimization (PSO) and other state-of-the-art optimization methods. Furthermore, the optimized passive and active shielding arrangements achieve ground-level electric-field mitigation efficiencies of 31.02% and 48.96%, respectively, directly underneath the line conductors. These quantified results provide a robust, high-speed engineering design tool capable of compressing the line’s electromagnetic footprint, thereby minimizing Right-of-Way (ROW) clearance requirements and ensuring strict compliance with international public exposure standards.
Source: Global Energy Interconnection
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7224936770