In the distribution management syst

In the distribution management system, effective information technology development measures should be taken to prevent short circuit. Sensitive and reliable relay protection devices and circuit breakers with sufficient capacity to cut off short circuits should be set to cut off short circuits quickly and minimize short circuit damage. Therefore, we must constantly analyze and calculate the short-circuit current, so that students can correctly select and set the protection device, select the components and switching equipment that limit the short-circuit current.We must try our best to eliminate all factors that may lead to short circuit, and at the same time, we need to calculate the short circuit current, so as to select the electrical equipment correctly, and make the equipment have enough dynamic and thermal stability to ensure that it will not be damaged during the maximum short circuit. The purpose of calculating short-circuit current is mainly to limit the harm of short-circuit and narrow the research scope of fault influence.