摘要
对UPQC补偿量检测方法进行了分析,提出在电网电压不对称且畸变的状态下实现UPQC补偿量综合检测的方法,该方法不存在锁相环和大量的坐标变换,通过正弦幅值积分器直接从不对称且畸变的电压中提取出基波正序电压,可直接用于电压补偿量的计算,同时为基于FBD法的谐波电流检测电路提供正弦参考信号,可快速准确地实现补偿量的检测。通过simiulink进行仿真,实现了电网电压谐波畸变且不对称状态下电压和电流补偿量的检测。
The unified power quality conditioner offsets detection method was analyzed,and a way to realize the offsets detection under the condition of asymmetry and grid voltage distortion was proposed. This method does not exist phase-lock link and a large number of coordinate transformation,fundamental positive sequence voltage can be extracted directly from distortion and asymmetrical voltage,and can be used in calculation of voltage compensation. It also provides sinusoidal reference signal for the harmonic current detection based on FBD,and the detection of compensation amount is realized rapidly and accurately. The simulation results confirm the validity of the method.
作者
郭鹤翔
智泽英
吴英
GUO He-xiang;ZHI Ze-ying;WU Ying(Department of Electronics and Information Engineering,Taiyuan University of Science and Technology, Taiyuan 030024, China;State Grid Linfen Power Supply Company,Regulation and Control Center,Shanxi Linfen 041000,China)
出处
《太原科技大学学报》
2018年第2期85-89,共5页
Journal of Taiyuan University of Science and Technology
基金
太原科技大学研究生科技创新基金(20151009)
关键词
统一电能质量调节器
补偿量检测
正弦幅值积分器
谐波电流
unified power quality conditioner
offsets detection
sinusoidal amplitude integrator
jarmonic current
