摘要
提出了将电气设备(如断路器等)用一条零阻抗支路模拟的短路电流计算方法。该方法利用零阻抗支路特点,结合定结构和变结构短路电流计算方法,能够直接求出在电气设备两侧分别发生短路时,通过电气设备(如断路器)的短路电流,从而合理地解决了传统的故障分析方法不能直接求出流过设备的短路电流的问题。实践证明,该方法使电气设备选择和继电保护整定计算实现计算机化更容易、更高效。
This paper presents a novel method for short-circuit current calculation, using zero impedance branch to simulate electrical equipment (such as circuit breaker). It utilizes zero impedance branch characteristic, combining structure-transform and structure-static short-circuit current calculation method to calculate the short-circuit current directly through the electrical equipment when short-circuit fault takes place at the two sides of the electrical equipment, and settles the problems that the traditional method cannot directly figure out the short-circuit current. It is proved in practice that the method can be applied efficienter to electrical equipment selection and relay protection setting.
出处
《电工技术学报》
EI
CSCD
北大核心
2005年第4期107-110,共4页
Transactions of China Electrotechnical Society
关键词
零阻抗支路
短路故障
计算机分析
继电保护整定
Zero impedance branch, short-circuit fault, computer analyses, relay setting
