地鐵直流保護(hù)裝置的設(shè)計(jì).pdf

1、西南交通大學(xué)碩士學(xué)位論文地鐵直流保護(hù)裝置的設(shè)計(jì)姓名：馬馳申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：電工理論與新技術(shù)指導(dǎo)教師：陳小川20120517西南交通大學(xué)碩士研究生學(xué)位論文第1I頁曼皇曼曼曼曼曼曼曼曼mi——一——————II皇曼曼基鼉曼曼量曼曼葛鼉AbstractProtectiondeviceofsubwayDCpowersystemofferstheacquisitionofprotectiondataprocessingthetaskofju

2、dgmentandissuedatripcommand，anditplaysallimportantroleforthesecurityandeconomicoperationofthesubwaytractionpowersupplysystemAtpresent，domesticsubwaysystemalreadyhasanumberofdomesticDCprotectiondeviceinoperationbutmoststi

3、llusetheforeignDCprotectionequipmentthereforedevelopingamghreliabilityandhi曲intelligentDCprotectionsystemisofgreatsignificanceThispaperstartsfrombasiccomponentsofthepowersupplysystemandbasicprinciplesofDCprotection，thenp

4、rovidesabriefintroductiontotheprotectionprincipleandgivesthesimulationanalysesofthesubwaytractionpowersupplysystem’Sshort—circuitfaultandthestartingprocessThenitalsoidentifiedtheconfigurationschemesandrelevantsettingprin

5、cipleofthecurrentfasttrippingprotectionanddi／dtA1protectionAccordingtothelimitationofdi／dtAIprotectionthispaperintroducesalladaptiveprotectionprinciplethatbasedonthecurrentintegralvalueanditsaverageThenitgivesalloutlineo

6、fthedetectionprincipleofDCprotectiondataInthehardwareschemeofDCprotectiondevice，thispapergivesthedetaileddesignoftheisolationamplifiermoduleandthecentralprocessingunitintheprotectiondevice，thensettingthevaluesofrelevantp

7、rotectionvalueInthesoftwaredesignoftheDCprotectiondevice，it’Sdividedintoseveralpartsasthemainprogram，thedisplayprogram，thekeyboardhandling，samplingprocedures，interruptandtestingprocedures，protectionprogram，andgivesprotec

8、tionflowdiagramofeachmodule，andcarrysouttheanalysisanddesignofthecontrolprocessesrealizeAtlastwi廿ltheuseofMATLABmlanguagethispaperwritesaprotectionprogrambasedontheamountofcurrentcharacteristicsandverifiesthevalidityandr