Research On Fault Location In Power Distribution Network Of FTU Based On DSP Design

Modern power systems are large,interconnected,an informatization and automation system to monitor,protect and manage the Power distribution network is particularly important.The FTU(Feeder Terminal Unit)on the feeder line is an important device in the system.Once a fault occurs on the line,The system can quickly and accurately locate the fault area and release the instruction remote control FTU processing fault according to the FTU report information using the positioning algorithm.Therefore,the study of FTU design and positioning algorithm is of great significance.This thesis first introduces the fault location based on FTU remote control in line with the development of modern power distribution system.Based on the TMS320F2812 processor for the FTU hardware design made a detailed introduction,there are data collection,communication,power module design,the introduction of FFT algorithm for the collection of data processing.Designed FTU software implementation process.Then,.the thesis studies the fault location algorithm,because the artificial intelligence algorithm in the positioning process often can not be reliable convergence,and then turn the line of sight to the distribution network topology based on the matrix positioning algorithm.In the matrix positioning algorithm,At the end of feeder line can not describe in the topology map caused blind area.Therefore,This thesis is further stratified on the basis of commonly used directed graphs,Based on this,we propose to increase the simulated node method to locate the tip segment fault section.FTU is usually installed on the outside by the site environment caused by the lack of information and errors.In order to ensure reliable positioning of the matrix algorithm,In the absence of information put forward the principle of relevance to make up for missing information,When the information is wrong,it is proposed to correct the error message by flowing the load change principle,Improve the fault tolerance of matrix algorithm.Finally,Set up a typical distribution network to verify the algorithm,Simulation failure occurs at the end of the segment and FTU information is missing and error is verified in the case of an algorithm,The results verify the feasibility of the algorithm.