摘要
监测供电电源系统电能质量是保障电力系统与用户侧设备安全运行的有效方法,为保障供电电源系统电能质量,研究供电电源系统电能质量稳定性监测方法。基于希尔伯特-黄变换HHT(Hilbert-Huang transform)算法监测供电电源系统电能质量信号帧中谐波频率与幅值,并检测电能质量扰动信号的扰动时间幅值与频率等,以此实现监测系统电能质量稳定性。通过实验检测不同压力(不同电能质量信号帧数量)条件下监测到的电能质量信号的丢帧率和准确率及电能质量信号传输时延,测试结果显示所研究方法可实现电能质量的监测。
Monitoring the power quality of power supply system is an effective method for ensuring the safe operation of power system and user-side equipment.To ensure the power quality of power supply system,a monitoring method for its power quality stability is studied.Based on the Hilbert-Huang transform(HHT)algorithm,the harmonic frequency and amplitude of the power quality signal frame of power supply system are monitored,and the disturbance time amplitude and frequency of the power quality disturbance signal are detected,so as to realize the power quality stability of monitoring system.The frame loss rate,accuracy and transmission delay of the monitored power quality signals under different pressures(with different numbers of power quality signal frames)were tested by experiments,and results show that the proposed method can realize the monitoring of power quality.
作者
贾伯岩
贾静然
卢锦玲
王文轩
景皓
JIA Boyan;JIA Jingran;LU Jinling;WANG Wenxuan;JING Hao(State Grid Hebei Electric Power Research Institute,Shijiazhuang 050000,China;School of Electrical and Electronic Engineering,North China Electric Power University,Baoding 071003,China;State Grid Cangzhou Electric Power Supply Company,Cangzhou 061000,China)
出处
《电源学报》
CSCD
北大核心
2024年第2期345-351,共7页
Journal of Power Supply
基金
国家电网有限公司科技项目资助(kj2020-051)。
关键词
供电电源系统
电能质量
稳定性监测
谐波
信号帧数量
Power supply system
power quality
stability monitoring
harmonic wave
number of signal frames
