基于DSP和APCI500O系列工控机的变压器后备保护装置

介绍了为葛洲坝大江电厂开发的微机型变压器后备保护装置硬件结构特点及主要模件工作特点,采用APCI5094工控机作管理机,加强了管理功能和人机界面.重点介绍了TMS320C32-40和MAX125A/D转换器的结构特点及整个装置基于双口RAM的数据处理方式.该方法利用DSP与V40相互之间的中断申请,实现对DRAM的操作.此方法实时性好,编程方便,对常规保护中较难实现的反时限失磁保护、富氏算法,装置完善的录波打印,事件报文,故障再现功能等作了简介.新装置的整体功能较常规保护有较大提高.

Development of power transformer backup protection based on DSP and APCI5000 series industrial controlling computer

The HW structure and the main module functions of power transformer back-up protection are introduced,which is developed for Gezhouba electric power plant.The APCI5094industrial PC is used as manager to enhance the management function and man-machine interface.The structural characters of TMS320C32-40and MAX125A/D convertor and the data processing mode based on Dual RAM are emphasized.The interruption application between DSP and V40is used to realize the DRAM operation,which has better real time performance and easier programming.The inverse-time excitation-loss protection and Fourier algorithm are introduced.The protection set has the functions of perfect fault recording,event logging and fault reformulation.Its integrated performance is much better than that of traditional protection.