【摘要】 对基于电流变化率的短路检测技术进行了深入的研究,建立了基于电流变化率的短路检测保护技术理论。该技术与现有短路检测技术相比,采用不同的技术思路和理论基础,是以重创新技术,解决了短路故障电流波形变化与其他故障电流波形变化的区分问题以及干扰电流波形突变与短路电流波形突变的识别问题,建立了数学模型,并在实际产品中检验了电流变化率短路检测保护技术的工作可靠性。更多还原

【Abstract】 Researching on short circuit detection technology based on current variance ratio,we get a theory of short circuit detection & protecting based on current variance ratio.New technology thought and theory basis were adopted,comparing with present theory on short circuit detection,the division problem of the variety fault current waveform between short circuit and others,and the problem of identifying break current waveform of short circuit from disturbance were solved.A mathematical model was made,and the reliability of real product based on this theory was validated.更多还原