文档介绍：华北电力大学(保定) 硕士学位论文馈线自动化就地隔离故障方案研究姓名:郁寅锋申请学位级别:硕士专业:电力系统及其自动化指导教师:李庚银 20080418 ,研究了一种基于重合器一重合器原理的馈线自动化就地隔离故障新方案即环网方案。该方案通过改进开关本体接触器电阻或采用IGBT器件设计开出回路的方法来提高开关的快速开断能力,。, 很好地解决了配网中速断保护不能区分定值带来的越级跳闸问题。采用的双向定值设计方法满足了环网中动态调整定值的需求。提出一种通过检测零序电压突增隔离单相接地故障的新方法。设计编写的环网保护软件通过实验验证了新环网方案在馈线上任何一点发生故障均能通过一次重合就地隔离故障,大大提高了配电网的就地快速隔离故障和恢复非故障区段供电的能力。关键词:馈线自动化,重合器一重合器,就地隔离,速断保护 ABSTRACT On the study paring the existing feeder automation technology,a new automated faultisolation scheme based on recloser-recloser principle isput scheme improves theresistor of contactor inbreaker or uses the IGBT device todesign thecircuit forincreasing therapid breaking capacity ofthecircuit breaker tomeet with therequirements for overcurrent paper proposes a new theory-the short delay—fast tripping protection that can solve theproblem of breaker tripping overgrade which iscaused by discriminating the protective reference value bidirectional protective reference value isapplied in tomeet with thedynamic adjustment forthe thepaper,a new method ispresented that can isolate thefaultofsingle-phase grounding by detecting the steep rise of zero sequence software system piled and testedby scheme call isolate thefailure atany point in thefeederautomation by one reclosing operation SOthatwe can greatly improve theability ofrapid faultisolation and restoration ofnon-fault section ofthepower supply in thelocal work. YuYinfeng(Power System and ItsAutomation) Directed by Gengyin. KEY WORDS:Feeder automation,Recloser-reeloser,Fault isolation,Instantaneous protection ,研究了一种基于重合器一重合器原理的馈线自动化就地隔离故障新方案即环网方案。该方案通过改进开关本体接触器电阻或采用IGBT器件设计开出回路的方法来提高开关的快速开断能力,。, 很好地解决了配网中速断保护不能区分定值带来的越级跳闸问题。采用的双向定值设计方法满足了环网中动态调整定值的需求。提出一种通过检测零序电压突增隔离单相接地故障的新方法。设计编写的环网保护软件通过实验验证了新环网方案在馈线上任何一点发生故障均能通