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Research on faulty line selection device of distribution network
Author(s): 
Pages: 48-52
Year: Issue:  19
Journal: POWER SYSTEM PROTECTION AND CONTROL

Keyword:  谐振接地消弧线圈故障选线零序电流比幅接地选线;
Abstract: 针对配电网中性点经可控消弧线圈接地电网单相接地故障选线困难的实际,提出接地选线新方法.给出了零序电流比幅接地选线法理论推导,得出了小电流接地系统在正常运行和发生单相接地故障时系统主要物理量的计算公式.搭建了试验模型,介绍了控制器的硬件结构及主要软件流程.硬件系统由CPU模块、模拟量采集模块、开关量输入/输出模块、液晶显示模块、电源模块和通信接口等模块组成.实验表明,该装置运算速度快、选线准确、抗干扰能力强.
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