摘要
为对电能质量进行有效的治理,提高用电效率,有必要对扰动信号进行实时检测和定位。针对当前电力系统存在的电能质量扰动信号中持续时间短、发生随机性大及不容易检测的特点,采用小波变换对电力系统的高频扰动、瞬时脉冲、电压切痕信号进行检测。研究表明,该方法能够精确定位扰动信号产生的时刻和持续的时间,证实了该法的准确性和优越性。
To manage power quality efficiently and improve the efficiency of power, it is necessary to detect and locate the disturbed signal in real time. In view of the characteristics of the current power system, such as the short duration, the wide occurrent randomness and detecting uneasily in power quality disturbed signals, this paper applies wavelet transform to detect voltage disturbance, impulse and notch. The research indicates that this method can precisely locate the moment of disturbed signals and its duration, at the same time, its accuracy and advantage are confirmed.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2009年第5期34-36,64,共4页
Power System Protection and Control
基金
河南省重点科技攻关项目(082102210015)
