电网故障仿真实验装置的设计

应高校继电保护实验的要求,设计用于继电保护实验的电网故障仿真实验装置。根据高校继电保护教育中的典型回路、典型故障,实现简单电网相应短路故障过程的简单模拟。介绍了其硬件结构和软件仿真。装置以TI公司的MSP430系列单片机为控制核心,经D/A转换、低通滤波后,由功率放大模块对信号进行放大输出。上位机采用VC 6.0完成上位机仿真软件模块的编写,主要实现电气接线图形化操作与短路计算模块功能。该装置能灵活地仿真故障时保护安装处电流、电压的实际动态过程,为继电保护实验的深入推广打下了基础。

Design of a device for power system simulation experiments

Design of simulator producing fault current and voltage applied to relay protection experiments is demanded in Colleges.According to the typical loops and the typical fault types,this paper realizes the simulation of the faults.This paper introduces its hardware design and simulation function in software.The device realizes the function through D/A converter,lowpass and power amplifier.The software of host-computer compiled by VC6.0 achieves operations through graphical interfaces and calculation functions.This simulator can produce fault current and voltage with the human-computer interaction interface according to the operation in host-computer.