基于ATmega128的变压器微机型保护装置的研究  

Research on the Microcomputer Protector of Transformers Based on ATmega 128

作　　者：刘得刚 

机构地区：[1]广西绿能电力勘察设计有限公司,广西南宁530031

出　　处：《电气开关》2011年第2期63-66,71,共5页Electric Switchgear

摘　　要：研究了中小型工厂10kV/0.4kV,容量为3150kV.A以内的配电变压器的继电保护方案,并对Dyn11联结的厂用变压器的电流分布状况进行分析。选择ATmega128单片机为控制器核心,构成微机型保护装置的硬件部分,重点介绍两片14位A/D芯片MAX125交流采样电路和频率相位测量电路。最后完成装置的实时交流采样,对所测数据进行分析,符合设计要求。The relay protection of the distribution transformer within 10kV/0.4kV,capacity 315kV·A are studied.The current distribation of the station transformer by Dyn11 connection is analyzed.Select ATmega 128 one-chip computer as a controller core,forming the hardware part of the microcomputer protector.We made the key points present two pieces 14bit A/D core MAX125AC sampling circuit and frequency phase measuring circuit.Finally,finish the real-time AC sampling of the device,analyze the measured data and meet the requirement of the design.

关 键 词：继电保护 DYN11 微机型 交流采样 

分 类 号：TM421[电气工程—电器]