直流配电网纹波测量方法

纹波是衡量直流配电网电能质量的重要指标参数。纹波不仅影响直流配电网的电能质量,还会危及供配电系统的安全稳定运行。文章介绍了直流配电网纹波的基本概念以及纹波相关参数的定义,概述了目前将纹波作为谐波测量存在的问题,给出了纹波测量对硬件的要求以及纹波测量中时间窗的选取原则,根据直流配电网不同频率纹波的差异性,提出了低频纹波和高频纹波的不同算法,通过对低压直流配电网中的纹波进行测量,说明了文章所提方法的可行性。

Ripple Measurement Method of DC Distribution Network

Ripple is an important indicator to measure the power quality of DC distribution network. Ripple not only affects the power quality of the DC distribution network, but also jeopardizes the safe and stable operation of the power distribution system. The paper firstly introduces the basic concept of ripple and the definition of ripple-related parameters in DC distribution network, summarizes the current problem of measuring ripple with a harmonic way, gives the hardware requirements of ripple measurement and the selection of window time in ripple measurement, and then proposes different algorithms of low frequency ripple and high frequency ripple according to the characteristics of different frequency ripple in DC distribution network. Finally, the feasibility of the proposed method is verified through the measurement of low-voltage DC distribution network.