CHEN Feng1, CHEN Xiao yu2, CAI Chong kai2, JIANG Dao zhuo1, LI Dian2

 

(1. College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China;

 

2. State Grid Shaoxing Electirc power Supply Company, Shaoxing 312000, China)

 

 

Abstract: Aiming at the design problem of prototype and experiment of  unified power flow controller with fault current limiting(UPFC FCL), intensive study is carried out in this paper. The working principle and the mathematical model of UPFC FCL was briefly outlined. A simple and effective ring wiring was proposed as well, which could save the cost and space. And the selection and design of the series transformer and thyristors in the FCL was also mentioned. Afterwards, layered architecture of UPFC FCL control system was elaborated. Finally the prototype was developed and tests of the UPFC FCL were performed. The results indicate that UPFC FCL which combines UPFC and bridge type FCL has a variety of regulatory functions and responds to short circuit fault effectively, and the proposed design of UPFC FCL is practical.

 

Key words: unified power flow controller (UPFC); bridge type FCL; experimental design; experimental verification