基于PIC16F877的配电变压器监测报警装置设计

Design of PIC16F 877-based monitoring and alarm device for distribution transformers

结合全球移动通信系统(GSM)技术和微处理器技术,提出了基于PIC16F877的配电变压器监测报警系统。配电变压器远程监控系统由监测报警、控制端、通信信道3部分组成。监测报警装置由基于PIC16F877芯片的微控制器模块,变压器电压、电流及电能检测模块和维护人员手机、控制站通信的接口设备——GSM模块构成。报警装置使用PICC语言编写PIC16F877的执行程序,设置微控制器每隔1min读取1次配电变压器状态参数;异常时,则触发使GSM模块发报警信号。研制的报警装置在10kV配电变压器上测试使用后表明,基本可满足实时通信的要求,实现了检测、自诊断、通信的一体化。

A PIC16F877-based monitoring and alarm system integrating GSM（Global System for Mobile Communications） technology and microprocessor technology is presented,which consists of monitoring and alarm devices,control terminal and communication channel. The monitoring and alarm device includes microprocessor module with PIC16F 877,detection module for transformer voltage and current,and GSM module for communication between maintainer＇s handset and control station. The executive programs are developed with PICC language ,and the microprocessor is set to read the state parameters of distribution transformer every other minute and the alarm is triggered when abnormal states are detected. The alarm device has been tested with a 10kV distribution transformer. Results show that it meets the requirement of real-time communication and realizes the integration of detection ,self-diagnosis and communication.