有源等效阻抗限流器的研究  

Study on Active Equivalent Impedance Fault Current Limiter

作　　者：王晓刚[1] 陈丹菲[2] 

机构地区：[1]广州大学 [2]中国科学院电工研究所

出　　处：《电气传动》2007年第3期30-32,40,共4页Electric Drive

摘　　要：有源等效阻抗限流器由电压型电力电子逆变器、直流电容、滤波器组成,通过变压器串联接入电网。电网正常时,限流器实现提高电能质量的功能或停止工作;故障发生后,立刻投入限流,对电网来说限流器等效为一可调阻抗,此阻抗设定为纯电感时可同时满足限流及使装置提供的有功最小。给出了实际电路与控制方法,理论分析与仿真结果均表明限流器具有优良的限流特性。Active equivalent impedance fault current limiter （FCL）is composed of voltage source inverter, DC capacitor, filter and connected through transformer in series. At normal operation state, the FCI. improves the quality of power supply, or it stops working. It begins to limit the fault currents immediately after faults occur. The FCL is regarded as an adjustable equivalent impedance and when the impedance is set as a pure inductance, the FCL can meet current limiting demand and provide minimum active power simuhaneously. The practical circuit and control method are given. Theoretical analysis and simulation result verifies that the FCL has a good current limiting characteristic.

关 键 词：有源等效阻抗 限流器 电压型逆变器 短路故障 电感模型 

分 类 号：TM563.1[电气工程—电器]