接地电阻测试系统中数字滤波技术研究

Research on Digital Filter in the Testing System of Earthing Resistance

基于对数字滤波技术的讨论,分析采用数字滤波消除随机干扰的优点,并提出一种新型的数字滤波方法,通过应用于杆塔接地电阻测试系统对其可行性进行验证。该算法运算量小,对消除尖峰脉冲干扰效果明显,为信息采集提供了一种处理工具。

The advantages of using digital filter to eliminate random interference are summarized based on the discussion on digital filter technology.Also,a new method of digital filter is proposed,the effectiveness and feasibility of which are verified in test system of grounding resistance.This algorithm has an advantage in that it takes relatively small amount of computation and it is obviously effective in the elimination of random interference.This study provides a processing tool for information acquisition.