微机型继电保护测试装置的设计

摘要

提出了微机型继电保护测试装置的设计方案.该方案利用系统固化的标准波形表以及混合波形生成算法,有效地解决了相位调节与任意波形表的生成问题,实现了各种复杂故障信号的模拟；以双CPU、双端口RAM为主,DA级联控制为辅,实现了输出波形频率、幅值的步进可调以及波形的动态跟随,有效地提高了装置的测量精度与速度;基于USB通信技术解决了通信与数据传输问题.%A design of test equipment for relay protections is proposed,which applies the firmware of standard wave table and the generation algorithm of complex wave to effectively realize the phase adjustment,arbitrary wave table generation and complex fault signal simulation. Dual CPU,dual-port RAM and cascaded DA control are adopted to implement the step adjustment of output wave frequency and amplitude and the dynamic waveform following,which effectively improves the measurement accuracy and speed of test equipment. USB-based communication technology is applied in communication and data transmission.