Protection of Sensitive Loads in Distribution Systems Using a BSFCL-DVR System

In this paper, an incorporated bridge-type superconducting fault current limiter (BSFCL) and Dynamic Voltage Restorer (DVR) is presented to improve the voltage quality and limiting fault current problems in distribution systems. In order to achieve these capabilities, the BSFCL and DVR are integrated through a common DC link as a BSFCL-DVR system. The FCL and DVR ports of the BSFCL-DVR system are located in the beginning and end of the sensitive loads' feeder integrated to the point of common coupling (PCC) in the distribution system. At first, the principle operation of the BSFCL-DVR is discussed. Then, a control system for the BSFCL-DVR system is designed to enhance the voltage quality and limit the fault current. Eventually, the efficiency of the BSFCL-DVR system is verified through the PSCAD/EMTDC simulation.

Automated summary

This paper presents an integrated bridge-type superconducting fault current limiter (BSFCL) and Dynamic Voltage Restorer (DVR) system to improve voltage quality and limit fault current in distribution systems. The BSFCL and DVR are integrated through a common DC link as a BSFCL-DVR system, with ports located at the beginning and end of sensitive loads' feeder. The operation principle, control system design, and efficiency verification of the BSFCL-DVR system are discussed and demonstrated through PSCAD/EMTDC simulation.