The Research And Development Of Relay Protection & Automatic Practice Training System

Substation simulation training system is the main parts of power system simulation training. Aiming at the operation,maintenance,overhauling and testing of substation,it provides scientific, normative,systemic post technical training for professional staff.Meanwhile it provides high level training and testing technology for relay protection and automatic practice training system.Hybrid Simulating and Training System of Substation is the ideal training system.Based on the substation Simulation training system of Shi Jiazhuang city power training center,this paper detailedly introduces the functions and system construction of the Hybrid Simulating and Training System.Simulative circuit breaker and switch are main terminal devices of Hybrid Simulating and Training System,which connect the digital power net and real secondary circuit.This paper makes detail acquirement analysis of simulative breaker and puts forward the development method,which uses embedded system as core and adopts distributed layout to design intelligent embedded simulative circuit breaker.This paper deeply introduces the software and hardware development process of the simulative circuit breaker and switch system.Another important terminal device of Hybrid Simulating and Training System is secondary circuit fault simulative device.This paper adopts embedded technology to develop secondary circuit fault simulative device.By connecting the kinds of points in series or parallel to simulation the circuit faults, such as circuit disconnection,connecting ground,short circuit,phase dislocation,coil burn out,bad connection,fuse blowing,parasitic capacitance,etc.The design in this paper extends the training contents of the simulative system.The simulative device developed in this paper is successfully applied in some training centers in Shi Jiazhuang city,Shantou city,etc.It carries out good training performance.