The Research Of The Fault Signal Monitoring System Of Relay Circuit

In China, power has become a daily necessity, the lives of people everywhere can not do without electricity, not only in life, but also in the development of our national economy, electricity is an extremely important role in the protection and support. With the rapid development of economy and improvement of people's life, power is widely applied more and more, there is also growing demand for electricity, which will cause some new problems, including the core problem is that the reliability and quality requirements of power supply.In order to improve the reliability of power system operation, to avoid or reduce the risk of accidents, many active measures should be taken. The vast majority reason cause the occurrence of the power system accident, is man-made to make the power system unnormal, such as low quality of the equipment, errors of design and installation, improper of the operation or maintenance. So we must improve the operation and management level, improve the quality of personnel on duty, ensure the quality of the design installation, use more secure and reliable equipment, strengthen maintenance and repairment of equipments.The principle of the fault signal monitoring system of relay circuit:is the use of the physical mutation of the protected equipment,and when the mutation reaches a certain value, through the logic part, issued the corresponding trip pulse signal.The fault signal monitoring system will process the corresponding pulse signal, in which the core is the use of DSP (TMS320F2812), the output is light alarm, and to make SOE records, in use of LCD to display when the failure occurred, so that staffs could accurately identified failure to make timely repairs.