配电网谐波实时补偿系统预测检测策略  

PREDICTED DETECTION STRATEGY OF THE REAL-TIME HARMONIC COMPENSATION SYSTEM IN DISTRIBUTION SYSTEM

作　　者：孙辉[1] 邹积岩[1] 李卫东[1] 曹德宁[1] 孙启忠[2] 

机构地区：[1]大连理工大学电气工程及应用电子技术系,辽宁省大连市116024 [2]辽宁省抚顺供电公司,辽宁省抚顺市113008

出　　处：《电力系统自动化》2003年第9期45-47,76,共4页Automation of Electric Power Systems

摘　　要：针对配电网电源侧谐波实时补偿系统提出了基于小波理论预测检测策略。其核心是跟踪电流基波分量 ,以半周期为采样更新速度 ,对负荷电流的基波分量进行递推式预报 ,避免了相关一般检测方法所引起的时滞。仿真结果表明 ,该检测方法有效、实用。This paper presents a new predicted detection strategy for compensating the delay yielded by sampling and the signal processing. Based on the wavelet theory, the fundamental currents are extracted from the disturbance load currents before a half cycle in the distribution system. And the compensation signals can be obtained in real-time. This detection strategy is implemented by software and simulated with MATLAB tools. As a result, the compensation harmonic signals can be obtained exactly by this detecting scheme. So the property of the measurement link of power quality line conditioner can be improved.

关 键 词：配电网 电力系统 谐波 实时补偿系统 预测检测策略 小波变换 

分 类 号：TM761[电气工程—电力系统及自动化]