基于粒子群算法的物流配送系统研究

AbstractAbstractProtective relay is the one of devices to response the fault and abnormal of electricpower system to send out signals to trip CB.With the expansion of the power system andthe consumer higher requirement for quality of power energy,the protection relay's criteriamust be improved greatly and developed to satisfy the higher requirement.This thesis is the research of 110kV-line computer basesd protection relay.This paperrecalled the history,the current development and future blueprint of computer relayprotection.In this paper,it proposed the distance relay with positive sequence polarizedvoltage which will have better fault-direction recognization.Direction recognization alsocan be effective when three phase fault takes plase because of low-voltage relayintroduction.It is also discussed protection algorithm in the thesis.This paper developed a 110kv transmission line computer based protection with itshardware and software designs.The hardware is developed by main chip 80C296 and ADSP2181.The CPU fullfels relay start-up,MMI and communication and the DSP processes relay algorithmand logic functions.The start-up function in the realy is to energize trip relay positivepole of DC power supply.The protection has very high inherent reliability and security.This paper developed the software of the equipment.The software function of each blockhas be detailedThe prevention the intervention of electric-magnetic is introduced in the relay.Testing proved its accuracy and reliability in principle,algorithm,hardware and software.Key words:Computer relay protection,110KV transmission line,Digital SignalProcessing(DSP)