电网技术Issue(3)：776-781,6.DOI:10.13335/j.1000-3673.pst.2014.03.035
基于限流电抗电流控制的新型桥式固态限流器
A Novel Bridge-Type Solid-State Fault Current Limiter Based on Limiting Reactance Current Control
摘要
Abstract
On the basis of thyristors based single-phase/three-phase bridge-type solid-state fault current limiter (SSFCL), its topological structure is improved:thyristors in rectifier and freewheel bridges are substituted by diodes to decrease the number of power electronic controllable elements. A limiting reactance current control based control strategy is proposed, that is, through controlling the switching off/on of full-controllable power electronic switch elements in current limiting reactance branch the current flowing through current limiting reactance is kept stable to limit the amplitude of fault current in transmission line. The analysis on entire working process of the improved SSFCL is given. Based on the topological structure and working principle, the control system and element parameters are designed and corresponding simulation model is established. Simulation results show that under different fault conditions the improved SSFCL works correctly and slightly affects on non-fault phase;it can control fault current accurately and the value of limited current can be flexible regulated, so after the clearance of the fault the transmission line can be back to normal operation rapidly, besides the improve SSFCL is suitable for following conditions:many times of fault occurred in a short-term, non-full-phase operation of transmission line and automatic reclosure.关键词
固态限流器/电力电子/二极管/限流电抗/故障电流/故障恢复Key words
solid-state fault current limiter (SSFCL)/power electronic/diode/limiting reactance/fault current/fault recovery分类
信息技术与安全科学引用本文复制引用
范宇,江道灼,吕文韬..基于限流电抗电流控制的新型桥式固态限流器[J].电网技术,2014,(3):776-781,6.基金项目
国家863高技术基金项目(2012AA050402)。@@@@Project Supported by the National High Technology Research and Development of China 863 Program(2012AA050402) （2012AA050402）
