论文摘要
The rapid and accurate detection of partial discharges(PD) ensures the safe operation of the power grid. It is important to improve the reliability of power supply. When a partial discharge(PD) occurs, acoustic wave will be produced. Usually the partial discharge(PD) produces an acoustic wave frequency of about a few kHz in the gas. This article will use the acoustic simulation module in the Comsol Multiphysics software to simulate the propagation of ultrasonic waves inside and outside the switchgear. Since the transmission of ultrasonic waves is affected by many factors, the geometry of the switchgear is the main factor affecting the propagation of ultrasonic waves. Therefore, this paper will simulate the transmission process of ultrasonic waves under different conditions. Exploring the impact of different monitoring locations on monitoring results through simulation. Through the analysis of the simulation results of the ultrasonic propagation process, we got the following conclusions. As the thickness of the switchgear cabinet increases, it only affects the amplitude of the signal. Opening a hole in the cabinet of the switchgear makes it easier to detect ultrasonic signals outside the cabinet. As the number of openings in the cabinet of the switch cabinet increases, the amplitude of the signal monitored outside the cabinet increases. Four monitoring points are placed on the front, back, upper and lower sides of the switchgear cabinet. Through the simulation of the ultrasonic transmission process, it can optimize ultrasonic testing method and provide guidance for the detection method of ultrasonic waves in production activities.
论文目录
文章来源
类型: 国际会议
作者: Lei CHU,Ding-ge YANG,Shuang-zan REN,Xue-feng OU,Zhan-hong WANG,Bin WANG,Hao WU,Jie LIU,Bo NIU,Wen-hui LI,Li-jun WANG
来源: 2019 International Conference on Information Technology, Electrical and Electronic Engineering (ITEEE 2019) 2019-01-20
年度: 2019
分类: 基础科学,工程科技Ⅱ辑
专业: 数学,电力工业
单位: State Grid Weinan Power Supply Company,Electric Power Research Inst.of Shanxi Power Grid Corp.,State Key Laboratory of Electrical Insulation and Power Equipment,Xi'an Jiaotong University
分类号: TM855;O242
DOI: 10.26914/c.cnkihy.2019.078509
页码: 536-540
总页数: 5
文件大小: 855k