【摘要】 设计了一种采用零序补偿导纳选线方法的小电流接地选线装置。介绍了几种小电流选线原理,提出了有效克服基于稳态分量选线方法的固有缺陷的可行措施。采用GPRS短信技术实现远程报警和数据传输,给出了硬件结构及软件实现。最后对装置分别进行了NUS系统小电流接地选线、GPRS短信功能验证实验,故障线路的选线准确率和数据收发正确率均达到了100%。更多还原

【Abstract】 A non-effectively grounded neutral device was designed based on zero-sequence compensation admittance line selection.Principles of several non-effectively grounded neutral systems were introduced.The feasible way to effectively overcome the inherent defects of line selection based on stable state was proposed.Remote alarm and data transmission based on GPRS short message technology were realized.Its hardware structure and software were given.Finally the verifying experiments on non-effectively grounded neutral device of NUS system and GPRS short message function were carried out.The accuracy rate of line selection and data transmission in fault line reached 100 %.更多还原