The Research Of Apply Of The Embedded System In The Relay Protection

With the rapid development of national economic,the scope of the electricity power syst- em is becomming more broad,and its strcture more complex.Once the trouble of the electricity system occur,the safety of the country and the produce and the live of the people will be influced seriously.So,it is very urgent how to ensure the safety and credibility of the work of the electricity power system.Relay protection is the equipment which can reflect the trouble and the abnormal status of the electricity power system and make the breaker trip in time and give an alarm.It is the very important part of the integrated automation of electricity power sysytem which includes the protection and control and dispatching and emergency management of electricity power system.Relay protection is very important to guarantee the safety of the electricity power system.The technology of Relay protection is developed with the development of electricity power system,also developed with the development of communication, information,specially software and hardware of embedded system.At first,the paper discusses the task and the basic requirement of Relay protection and the history of its development and its present situation,and then discusses the basic algorithm(FFT).Simplely the paper introduces the hardware of Relay protection,and discusses embedded operation system and how to use it in Relay proctection in detail, and also introduces the SmallGUI which is designed by the author of the paper.At last,the paper introduces the technology of anti-jamming of Relay protection.GUI(Graphic User Interface) is the most important and the most complex part of the embedded system.It is easy for user to design the MMI(the Man and Machine Interface) by calling the function of GUI,regardless of the hardware and the complex dealing of the graphic.The SmallGUI overcomes the shortage that the former GUI consumes too resources of MCU. If you are going to use the SmallGUI,you should create two tasks for the input device:the task for scanning key and the task for dealing key.After receiving the signal from the task for scanning key, the task for dealing will complete the job assigned by the user according to the code from the task for scanning key and the status code by call the corresponding function of SmallGUI...