基于混沌特征分析的电网输配电高压直流检测技术研究  

Research on HVDC Detection Technology for Power Transmission and Distribution Based on Chaotic Characteristic Analysis

作　　者：周熙玮 ZHOU Xiwei(Yancheng Power Supply Branch of State Grid Jiangsu Electric Power Co.,Ltd.,Yancheng 224001,China)

机构地区：[1]国网江苏省电力有限公司盐城供电分公司,江苏盐城224001

出　　处：《通信电源技术》2023年第13期10-12,共3页Telecom Power Technology

摘　　要：对输配电系统中的高压直流(High Voltage Direct Current,HVDC)进行检测可以提高电网中高压直流的运行效率。为了提高电网输配电高压直流检测性能,提出了基于混沌特征分析的电网输配电高压直流检测技术研究。通过高压直流信号的小波分解,获得小波重构系数,引入信息熵理论,计算出高压直流信号在不同尺度下的小波包时间熵,提取出输配电系统中的高压直流特征量。在引入混沌特征分析理论的基础上,构建输配电高压直流特征点的偏差函数,通过求解偏差函数的最小值,检测出输配电系统中的高压直流信号。实验结果表明,所提技术将高压直流检测的时间控制在2 s以内,大大提高了电网输配电的高压直流检测效率。The detection of High Voltage Direct Current(HVDC)in power transmission and distribution system can improve the operation efficiency of HVDC in power grid.In order to improve the detection performance of HVDC in power grid,the research of HVDC detection technology in power grid transmission and distribution based on chaotic characteristics analysis is proposed.Through the wavelet decomposition of HVDC signal,the wavelet reconstruction coefficient is obtained.By introducing the information entropy theory,the wavelet packet time entropy of HVDC signal at different scales is calculated,and the characteristic quantity of HVDC in power transmission and distribution system is extracted.Based on the introduction of chaos characteristic analysis theory,the deviation function of HVDC characteristic points in transmission and distribution is constructed,and the HVDC signal in transmission and distribution system is detected by solving the minimum value of the deviation function.The experimental results show that the detection time of HVDC is controlled within 2s,which greatly improves the detection efficiency of HVDC in power transmission and distribution.

关 键 词：混沌特征分析 特征量提取 高压直流(HVDC) 输配电系统 

分 类 号：TM721.1[电气工程—电力系统及自动化]