Mesh‐free Monte Carlo method for electrostatic problems with floating potentials

IF 4.4 2区 工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC
High Voltage Pub Date : 2024-07-07 DOI:10.1049/hve2.12468
Wenjing Yin, Yunqing Wang, Hong Deng, Jiawei Wang, Xiaoke Gao, Ruoyu Huang, Kun He, Weijiang Chen, T. Dong
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引用次数: 0

Abstract

Numerical simulation plays a crucial role in the analysis and design of power equipment, such as lightning protection devices, which may become inefficient using traditional grid‐based methods when handling complex geometries of large problems. The authors propose a grid‐free Monte Carlo method to handle electrostatic problems of complex geometry for both the interior and exterior domains, which is governed by the Poisson equation with a floating potential boundary condition that is neither a pure Dirichlet nor a Neumann condition. The potential and gradient at any given point can be expressed in terms of integral equations, which can be estimated recursively within the walk‐on‐sphere algorithm. Numerical examples have been demonstrated, including the evaluation of the mutual capacitance matrix of multi‐conductor structures and lighting striking near real fractal trees. The proposed method shows advantages in terms of geometric flexibility and robustness, output sensitivity, and parallelism, which may become a candidate for game‐changing numerical methods and exhibit great potential applications in high‐voltage engineering.
浮动势静电问题的无网格蒙特卡洛方法
数值模拟在防雷装置等电力设备的分析和设计中起着至关重要的作用,而在处理复杂几何形状的大型问题时,传统的基于网格的方法可能会变得效率低下。作者提出了一种无网格蒙特卡罗方法,用于处理内外域复杂几何形状的静电问题,该问题受泊松比方程支配,其浮动电势边界条件既不是纯粹的迪里夏特条件,也不是诺伊曼条件。任何给定点的势和梯度都可以用积分方程来表示,并可以在球上行走算法中进行递归估计。已演示的数值示例包括多导体结构互容矩阵的评估和真实分形树附近的照明打击。所提出的方法在几何灵活性和鲁棒性、输出灵敏度和并行性方面显示出优势,可能成为改变游戏规则的候选数值方法,并在高压工程中展现出巨大的应用潜力。
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来源期刊
High Voltage
High Voltage Energy-Energy Engineering and Power Technology
CiteScore
9.60
自引率
27.30%
发文量
97
审稿时长
21 weeks
期刊介绍: High Voltage aims to attract original research papers and review articles. The scope covers high-voltage power engineering and high voltage applications, including experimental, computational (including simulation and modelling) and theoretical studies, which include: Electrical Insulation ● Outdoor, indoor, solid, liquid and gas insulation ● Transient voltages and overvoltage protection ● Nano-dielectrics and new insulation materials ● Condition monitoring and maintenance Discharge and plasmas, pulsed power ● Electrical discharge, plasma generation and applications ● Interactions of plasma with surfaces ● Pulsed power science and technology High-field effects ● Computation, measurements of Intensive Electromagnetic Field ● Electromagnetic compatibility ● Biomedical effects ● Environmental effects and protection High Voltage Engineering ● Design problems, testing and measuring techniques ● Equipment development and asset management ● Smart Grid, live line working ● AC/DC power electronics ● UHV power transmission Special Issues. Call for papers: Interface Charging Phenomena for Dielectric Materials - https://digital-library.theiet.org/files/HVE_CFP_ICP.pdf Emerging Materials For High Voltage Applications - https://digital-library.theiet.org/files/HVE_CFP_EMHVA.pdf
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