变压器二次侧短路的开断特性研究

通过理论分析,现场试验和计算机计算,对断路器开断变压器二次侧短路故障进行了较深入的研究,得到断路器母线侧、变压器侧以及断口间的过电压倍数和高频振荡频率及其随各种因素的变化规律,研究了此种故障的开断条件,确定了确保断路器顺利开断的几项措施。

The Study of Breaking Characteristic of Short Circuit Fault on Secondary Transformer.

It was studied that breaker switched off short-circuits on transformer secondaries in this paper by theoretical analysis field tests and calculations with computer. We got the overvoltages on bus and transformer and transient recorery voltage of breaker high oscillowing frequency and the rule of their change following various factors affecting overvotages. Openn-ing conditions of this fault were studied and seneral methods guaranteeing breaker openning were determined.