模糊集原理构成的变压器差动保护

Transformer Differential Protection Based on Fuzzy-Set Theory

介绍一种用双机CPU构成的基于模糊集理论的双绕组变压器微机差动保护装置。高性能单片机 87C5 5 2和DSP器件TMS32 0C30通过双口RAM芯片IDT7132等构成一个高功效的微机控制系统。该差动保护动作判据集标积制动原理和突变量原理为一体 ,由程序适时计算修正模糊控制系数 ,可以保证在区内故障时 ,尤其是在匝间短路时具有较高的灵敏度 。

A dual CPU differential protection for dual winding transformer is presented, which is based on fuzzy set theory. The powerful microcomputer control system is composed of an enhanced single chip microcomputer 87C552, a DSP device TMS320C30, a dual port RAM ID7132 and others. Its breaking criterion incorporates both scalar product breaking theory and fault current mutation component theory. The fuzzy control parameters, which are calculated and modified timely by program, can ensure a higher sensitivity for internal faults, especially for interturn short circuit, and a reliable no action for out zone faults.