WU Mingming1, LV Wentao2, CHEN Feng2, HU Pengfei2, YANG Ying3, 

YANG Yi1, WANG Xiaoguang1, JIANG Daozhuo2

 

(1. Zhejiang Huzhou Power Supply Company, Huzhou 313000, China; 

2. College of Electrical Engineering, Zhejiang

University, Hangzhou 310027, China; 

3. Zhejiang Electric Power Corporation, Hangzhou 310027, China)

 

 

Abstract: Aiming at the problem that flexible alternating current transmission devices (FACTs) are generally vulnerable against overload or fault operation, the concept of resilient power system was proposed. Considering the requirement of resilient power system, the characteristics of unified power flow controller with fault current limit (UPFCFCL) was proposed and researched. While operating normally, UPFCFCL were able to obtain soft control, such as adjust line flow, easily as general UPFC. Under fault operating circumstances, the fault current limiter within UPFCFCL will limit the system fault current to protect the device from overcurrent. Study results demonstrate that UPFCFCL is a novel and powerful device which matches the requirement of resilient power system.

 

Key words: resilient power system; fault current; impact; unified power flow controller (UPFC)