基于突变量方向的区域备自投故障范围识别方案  

Fault range identification scheme based on fault component direction for areal automatic switchover system

作　　者：颜俊[1] 安小波[2] 张立平[1] 代运滔 董睿智[1] 

机构地区：[1]中国电力工程顾问集团中南电力设计院有限公司,湖北武汉430071 [2]贵州电网公司遵义供电局,贵州遵义563000

出　　处：《电力自动化设备》2017年第9期185-192,共8页Electric Power Automation Equipment

摘　　要：分析区域备自投系统对故障范围识别的需求,提出了一种基于突变量方向原理的故障范围识别方案。方案中区域备自投系统各子站实时检测、发送本地测点的突变量方向值,方向值经短路电流展宽,主站同步接收、记录区内所有测点的突变量方向值,并保存一定时长的历史数据,当主站检测到跳闸失压时根据跳闸前各断路器测点的突变量方向值识别故障范围。该方案能够满足各种故障失压情况下的识别要求,原理简单可靠,不需增加额外设备及二次回路。The requirement of areal automatic switchover system for fault range identification is analyzed and a scheme of fault range identification based on fault component direction is proposed. The slave stations of switchover system detect and transmit the fault component direction values of local measuring points in real time,which are spread by the short circuit currents and synchronously received by the master station for recording. The fault component direction values are stored for a certain period. When the master station detects the voltage-loss due to tripping,it identifies the fault range according to the fault component direction values of different circuit breakers. The proposed scheme can correctly identify the fault ranges of different voltage-loss conditions,simple and reliable,no additional equipment and secondary circuit required.

关 键 词：区域备自投 故障范围识别 突变量方向 继电保护 

分 类 号：TM77[电气工程—电力系统及自动化]