摘要
接地绝缘性能是保障电气系统安全运行的关键指标,接地绝缘电阻和电容的精准测量对预防电气故障具有重要意义。传统单频率检测方法受环境干扰大、测量精度有限,难以满足复杂电气系统的绝缘评估需求。文章阐述了多频率接地绝缘检测技术的理论基础,分析了接地电阻与电容的频率特性及测量原理,介绍了多频率检测系统的硬件架构与信号处理算法。研究表明,通过注入0.1~10 Hz等频率信号,能够有效检测绝缘电阻与电容,提高接地绝缘电阻及电容的检测能力,为电气系统绝缘状态的全面评估提供了可靠解决方案。
Ground insulation performance serves as a critical indicator for ensuring the safe operation of electrical systems.Accurate measurement of grounding insulation resistance and capacitance is essential for the prevention of electrical faults.Traditional single-frequency detection methods are prone to environmental interference and suffer from limited measurement accuracy,which restricts their effectiveness in meeting the insulation assessment requirements of modern,complex electrical systems.This paper systematically elaborates on the theoretical foundation of multi-frequency grounding insulation detection technology.It further analyzes the frequency-dependent characteristics and measurement principles of grounding resistance and capacitance.This paper provides a detailed description of the hardware and signal processing algorithms employed in the multi-frequency detection system.Research findings demonstrate that by injecting frequency signals within the range of 0.1 Hz to 10 Hz,insulation resistance and capacitance can be effectively measured.This enhances the overall detection capability and offers a reliable solution for comprehensive insulation state assessment of electrical systems.
出处
《电力系统装备》
2025年第11期44-45,48,共3页
Electric Power System Equipment
关键词
多频率检测
绝缘电阻
绝缘电容
绝缘监测
电气系统
multi-frequency detection
insulation resistance
insulation capacitance
insulation monitoring
electrical system
