模糊标积制动原理的变压器微机差动保护

A micro-computer system on a transformer differential protection based on fuzzy set and scalar product breaking 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 。

This paper expounded a double CPU control device used for a transformer differential protection on fuzzy set theory. It is a high-powered micro-computer control system which consists of a single chip micro-computer 87C552, a DSP device TMS320C30, a double ports RAM IDT7132 and otherwise. The theory of fault criterion on a transformer differential protection is formed by incorporating the main point of both scalar product breaking theory and fault current mutation component theory. Fuzzy control parameters, which are calculated and modified timely by programming control, can ensure a criterion which should be both sensitive when internal faults occur or inter-turn faults occur and reliable when out-zone faults occur.