基于故障电流控制的新型UPFC-FCL设计

发布时间：2018-03-25 10:46

本文选题：统一潮流控制器　切入点：故障限流器　出处：《电力自动化设备》2015年12期

【摘要】：针对统一潮流控制器(UPFC)的系统短路保护问题,提出了一种基于故障电流控制的新型限流式统一潮流控制器(UPFC-FCL)拓扑结构。通过在限流电抗支路上投切耗能电阻,配合UPFC并联侧控制,限制线路故障电流的上升速率和幅值并保护设备安全。详细阐述了拓扑结构与工作原理,并进行了数学建模和关键参数设计。仿真结果表明,该新型UPFC-FCL能较精确地控制故障电流并可灵活调整限流值以配合继电保护电流整定值和断路器遮断电流,故障消除后恢复迅速且适用于多次故障和自动重合闸等情况,同时降低了装置成本以及UPFC的损坏风险。
[Abstract]:In order to solve the problem of system short-circuit protection of UPFC (unified power flow controller), a novel UPFC-FCLs topology based on fault current control is proposed. With UPFC parallel side control, the rise rate and amplitude of line fault current are limited and the safety of the equipment is protected. The topological structure and working principle are described in detail, and the mathematical modeling and key parameter design are carried out. The simulation results show that, The new UPFC-FCL can control the fault current accurately and adjust the current limiting value flexibly to match the setting value of the relay protection current and the interrupting current of the circuit breaker. It can recover quickly after the fault is eliminated and is suitable for the cases of multiple faults and automatic reclosure. At the same time, the cost of the device and the risk of UPFC damage are reduced.
【作者单位】：浙江大学电气工程学院;
【基金】：国家高技术研究发展计划(863计划)项目(2012AA-050402)~~
【分类号】：TM761

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