摘要详情

ID / 提交时间

181 / 2021-10-30 16:43:45

标题

Simulation Analysis of Arc Motion of High Voltage DC Relay under Non-uniform Magnetic Field

关键字

DC arc,High Voltage DC Relay,Non-uniform Magnetic Field,Restriking

主题及专题

Other topics in Electrical Engineering

状态

终稿

作者

Qiong Lin / Fuzhou University

Xin Huang / Fuzhou University

Xiangjun Liu electrical contact theory and contact material, i / Fuzhou University

摘要

Due to high voltage and current levels of high voltage DC (HVDC) relays and the absence of natural zero crossings in DC system, the arc generated during the breaking process of the relay has high energy and is difficult to extinguish, which affects the relay's breaking reliability and electrical life. In order to accelerate arc extinguishing, the permanent magnets are usually placed in the arc extinguishing chamber of the HVDC relay. The existing simulation analysis is mostly based on the uniform distribution of the magnetic field, while the distribution of the magnetic field generated by the permanent magnets is non-uniform. Therefore, based on the theory of magnetohydrodynamics (MHD), this paper establishes the numerical model of arc plasma and permanent magnets of HVDC relay by means of COMSOL Multiphysics software, analyzes the arc motion characteristics under the action of non-uniform magnetic field generated by permanent magnet. The results of the simulation analysis will provide a basis for the application of permanent magnets in HVDC relays.

重要日期

会议日期

07月11日

2023

至

08月18日

2023
11月10日 2021

初稿截稿日期
12月10日 2021

注册截止日期
12月11日 2021

报告提交截止日期

主办单位

IEEE IAS

承办单位

IEEE IAS Student Chapter of Southwest Jiaotong University (SWJTU)
IEEE IAS Student Chapter of Huazhong University of Science and Technology (HUST)
IEEE PELS (Power Electronics Society) Student Chapter of HUST