摘要
传统的根据无功功率的定义来计算无功功率的方法难以满足动态无功补偿控制系统中快速响应的要求。提出了基于自适应陷波器的单相电路的无功功率检测新方法。该方法采用自适应陷波器提取出单相电压、电流及它们的90°相位变换值,然后通过单相瞬时无功功率理论计算无功功率。仿真结果表明,在幅值稳定的情况下,该方法能够以较小的误差检测出无功功率;在幅值突变和线性变化的情况下,能够根据电压变化快速追踪无功功率的变化。
The reactive power calculation method with the traditional definition is difficult to meet the rapid response of the dynamic reactive power compensation system controller. A new method for reactive power measurement of single phase circuit based on ANF （adaptive notch filter） is proposed in this paper. Achieving the single-phase voltage and current and its 90-degree phase shift value by ANF, the method calculates reactive power according to the single-phase instantaneous power theory. Simulation results indicate that the proposed method is able to measure the reactive power with less error when the voltage amplitude is steady, and track the variation of the reactive power rapidly while the voltage amplitude is changing suddenly or linearity.
出处
《南方电网技术》
2013年第3期85-88,共4页
Southern Power System Technology
关键词
自适应陷波器
幅值
无功功率
单相电路
adaptive notch filter
amplitude
reactive power
single phase circuit
