直流系统继电误动作半实物仿真平台设计与分析  

Design of HILS platform and analysis on the DC system relay mis-operation

作　　者：刘追[1] 刘振兴[1] 王琦[1] 

机构地区：[1]武汉科技大学信息科学与工程学院,武汉430081

出　　处：《电测与仪表》2017年第18期118-124,共7页Electrical Measurement & Instrumentation

基　　金：冶金自动化与检测技术教育部工程研究中心开放基金(MADT201607);湖北省教育厅科学技术研究计划青年人才项目(Q20161105)

摘　　要：变电站直流系统中接地故障引起的继电器误动作会造成安全隐患。利用计算机半实物仿真技术,在eMEGAsim实时仿真器中搭建了用于分析直流系统继电器误动作的仿真平台,通过替代原理将实物继电器取代其在RT-LAB软件中的仿真模块,并保持原仿真模型整体电气特性不变,实现仿真模型和工程实物的有效联接。利用搭建的半实物仿真平台,分别分析了不同接地电阻值和系统分布电容对继电器误动的影响。相对于离线仿真,该半实物仿真平台能够有效提高仿真分析速度,真实展现开关实物动作过程,分析结果对实际调试有一定的参考意义。In substation DC system, the relay mis-operation caused by ground fault may lead to hidden danger for the power system. Based on computer HILS （hardware in-the-loop simulation） technology, a simulation platform with eMEGAsim real-time simulator is built to analyze the relay mis-operation of I）C system. In the platform, through the substitution principle, the relay model block in the RT-LAB software is replaced by a real object, and the whole elec- trical characteristics of original simulation model keeps unchanged, which could realize the effective connection be- tween the mathematical model and the engineering object. The influences of different resistance values and the system cable capacitance on the relay mis-operation are analyzed through the platform. Compared with off-line simulation, the HILS platform can effectively improve the speed of simulation analysis, show the real switching action process, and the analysis resuhs have reference significanee to the actual debugging.

关 键 词：直流系统 继电器 半实物仿真 实时仿真器 

分 类 号：TM741[电气工程—电力系统及自动化]