Fault Analysis of Distribution Network with Flexible Ring Network Control Device

摘要

With the rapid development of the power electronic technology and control technology, the use of the IGBT, IGCT full controlled devices consisting of a voltage source converter (voltage source converter, VSC) in the DC transmission system has been widely used. However, rapid response of power electronic devices and control systems, protective properties of the AC system impact. Study of DC system in DC interconnected system on the protection of AC system effects have important theoretical significance and practical value. Based on the output characteristics in a comprehensive grasp of the AC distribution network protection, feeder automation and flexible loop network control device fault, in-depth analysis of its access to distribution network in different position, different types of fault when fault characteristics and the traditional AC power distribution of the difference between, on the basis of study the applicability of traditional AC distribution line protection strategy and improvement strategy.