Design And Implementation Of Distribution Feeder Automation Test System Based On Analog Terminal

Distribution automation is the key to realize the requirements of power supply safety,quality and economy.Feeder automation system is an important part of distribution automation,which is mainly used for feeder fault automatic location,automatic isolation and automatic restoration of power supply in non-fault areas.The feeder refers to the branch connected by any distribution network node,and the feeder fault refers to the inter-phase fault or grounding fault of the feeder.Before the equipment in the power industry is put into operation,it needs to pass strict testing.For a long time,the test of feeder automation system's function of detecting and dealing with feeder faults is usually carried out in the long-term operation process on site.This is neither in line with the requirements of power equipment commissioning and testing,nor conducive to timely detection and processing system defects.In fact,due to the lack of testing means,most of the feeder automation functions have not been put into operation in the distribution network operation site,but only use its basic functions such as simple data acquisition and fault detection.The introduction of feeder automation test system based on analog terminal can solve the above problems of feeder automation system testing.The overall test of feeder automation system can be completed by a PC,and the corresponding test report can be issued.Under this background,this thesis analyses the test flow of feeder automation test system,studies the realization mechanism of distribution simulation terminal,and designs the architecture of the whole system.The whole system involves seven functional applications,including test project management,test process management,message communication module,test process visualization,distribution simulation terminal,feeder fault simulation and test report function.Among them,message communication module,distribution simulation terminal and feeder fault simulation are the core applications of the system.This test system could cover all kinds of typical feeder fault scenarios,and can make a comprehensive evaluation of the overall function and performance of the feeder automation system.At the same time,the test report template of the test system comes from the field tester.After completing the whole test process,the test system can automatically generate the corresponding test report,and the tester does not need to make any adjustments.While greatly reducing the testers'work intensity,it also improves their work efficiency.