基于强跟踪滤波器的水中高频振荡放电参数分析  

Parameter Analysis of High Frequency Oscillation Discharge Underwater Based on Strong Tracking Filter

作　　者：康忠健[1] 高崇 邵在康 傅雪原 Kang Zhongjian;Gao Chong;Shao Zaikang;Fu Xueyuan(College of New Energy China University of Petroleum,Qingdao 266580,China;Shandong Electric Power Engineering Consuting Institute Corporation,Jinan 250013,China)

机构地区：[1]中国石油大学(华东)石大山能新能源学院,青岛266580 [2]山东电力工程咨询院有限公司,济南250013

出　　处：《电工技术学报》2024年第13期4090-4099,共10页Transactions of China Electrotechnical Society

基　　金：国家重大科技专项资助(2016ZX05034004)。

摘　　要：为探明水中放电高频振荡阶段参数及其变化特性,提出一种基于自适应噪声完备集合经验模态分解(CEEMDAN)和强跟踪滤波器的时变参数辨识方法。通过该方法分解水中放电实验平台采集的电压、电流信号得到不同频率特征的信号分量,对最适应原始波形的信号分量开展Hilbert变换并求得相应的瞬时幅值、频率,进而得到所需的电阻和电感。实验数据离散度分析结果表明,放电进程中参数变化具有随机性,故利用强跟踪滤波器进一步对实验数据进行辨识处理,可有效地降低随机放电造成的离散性,并获得具备普适性的电阻值和电感值。偏离度分析结果表明,辨识电阻与测量数据除在气泡崩塌阶段随机性过大外,前期偏离度集中在23.26%以下,降低了偏离度处于80%~110%内数据点的干扰,电感偏离度集中在2.35%以下。该方法能够有效地应用于水中高频振荡放电过程的时变参数处理研究中。Underwater pulsed discharge is a complex physical process characterized.Based on the characteristics of plasma evolution,this process is divided into pre-breakdown discharge,main discharge,and high-frequency oscillation discharge stages.Existing research focuses on the impact of energy conversion during the pre-breakdown and main discharge stages,with the relatively limited investigation into parameters during the high-frequency oscillation discharge stage.The distribution of the electric field between electrodes is susceptible to environmental influences in the underwater pulsed discharge process,leading to a significant level of randomness in the development of arc channe.Therefore,the circuit parameters of single discharge data is not representative.This paper proposes a method for analyzing parameters of high-frequency oscillation discharge underwater by using a strong tracking filter(STF).Firstly,the variations of resistance and inductance were delineated based on the plasma dynamics in the high-frequency oscillation discharge stage,and the equivalent circuit model was established.Plasma density within the bubbles generated in the main discharge stage remains substantial and retains conductivity during this stage.Under the residual voltage of the capacitors,the equivalent capacitance and inductance induce attenuated oscillatory perturbations within the discharge circuit.At this stage,due to the loss of the arc channel,the bubble resembles a non-heat source structure,which means this bubble cannot continue to expand under the action of static water pressure,and the volume of it begins to pulsate regularly.The plasma density in the bubble is influenced by this phenomenon,resulting in oscillatory variations in the inter-electrode resistance and inductance.Constrained by the electrode configuration and its inherent morphological characteristics,the bubble undergo collapse,leading to a rapid increase in the inter-electrode resistance during this process.Next,the underwater pulsed discharge environment results in

关 键 词：水中脉冲放电 高频振荡 参数辨识 自适应噪声完备集合经验模态分解(CEEMDAN) 强跟踪滤波器 

分 类 号：TM89[电气工程—高电压与绝缘技术]