【摘要】 直流接地是电力系统中经常发生、危害较大的一种故障现象,检测和排除直流接地故障是保证电力系统安全、稳定运行的必要条件。直流母线对地绝缘电阻的检测,是直流操作电源监控系统中既重要又困难的一个问题。本文对传统的检测方法的优缺点进行了详尽的分析和对比,提出了一种新的基于单片机实现的实用检测方法,该方法成本低,精度高。更多还原

【Abstract】 In a power supply system, it is necessary to detect and eliminate Direct Current(DC) power supply grounding, a frequent fault, in order to ensure the system’s safety and stability. The measurement of insulation resistance between DC power supply and ground is important and difficult in a DC operating power supply system. Methods used to measure the resistance are summarized and compared,and a new method based on siglechip is proposed. The new method has such advantages as high accuracy and low cost.更多还原