基于瞬时无功功率理论的谐波检测新方法

Novel Harmonics Detecting Methods Based on the Instantaneous Reactive Power Theory

介绍了几种基于瞬时无功功率及谐波检测理论新方法的基本原理及其各自的优、缺点,其中改进算法本身包括加PI调节器、并行检测方式、加时间延迟角、优化滤波器设计、重采样法等多种方法;与其它检测法混合使用的新方法包括在算法中引入神经网络控制方式处理锯齿波抖动,引入平均功率理论减少复杂的矢量变换,并讨论了瞬时无功理论用于单相电路谐波治理的情况。

Some novel harmonics detecting methods based on the instantaneous reactive power（IRP） theory are introduced And emphases are placed on basic principles, advantages and disadvantages of different methods. Improved algorithm ways are presented , for example, adding PI regulator to reduce system＇s dependence on parameters precision; using a parallel detecting manner to detect harmonies; by means of time delay angle and optimizing filters design to mprove detecting precision; applying resampling method to lessen computation. Moreover, some ways coupled with other detecting methods are presented as well, such as using the IRP-ANN hybrid control method to solve chattering problem of jagged wave; adopting the average power theory to lessen complex vector transformation. Furthermore, the IRP used in single-phase circuit is discussed.