基于pc工控機(jī)的35kv10kv變電站微機(jī)保護(hù)及綜合自動化系統(tǒng)的研究

1、天津大學(xué)碩士學(xué)位論文基于PC工控機(jī)的35KV10KV變電站微機(jī)保護(hù)及綜合自動化系統(tǒng)的研究姓名：王海吉申請學(xué)位級別：碩士專業(yè)：電力系統(tǒng)及其自動化指導(dǎo)教師：陳超英賀家李2002.1.1ABSTRACTUptonowallthecomputerrelays，monitoringdevices，controllingdevicesandRTUatelectricpowersubstationhavetheirownsystemsandallki

2、ndsofdevicesareconnectedbythefieldbustotransmitmonitorandcontrolmessagesorcommandsThecharacteristicsofusingfieldbusarethelesslinesandthefeasibilityofequipmentseaingdecentralizationButforcentralizedarrangementofrelaying，m

3、onitoringandcontrollingdevices，theadvantageofseHingelectricsubstationwithisolationchamberisnotprominentInadditionfieldbususestheseriaIdatatransmissionmethodbutthismethodislessefficientindatatransmissionandnotbeusedforlea

4、ltimepurposeespeciallywhenthetransmissiondistanceislargeNowconcentratedcasetypeconstructionisinthetrendof35KV／10KVelectricsubstationIfdistributeddevicesarestillusednotonlyincreasethecostofdevices，butalsoincreasetheoccupi

5、edareas。whichisnotacgordingwiththedevelopingtrendofelectricpowersubstationThemainpurposeofthispaperistesearchthelealizationofintegratedautomationsystemwhichintegratesrelaying，monitoring，controllingdevicesandtelemachanies

6、，intoaunitedsystembyusingthePCindustdalcontrollingcomputerbasedonISAbusThefunetionsofrelaying，monitoringandcontrolling，whichareformerlyrealizedbyseparateddevices，areintegratedbyiIsownindustrialcontrollingcomputerandboard

7、cardswithallkindsoffunetionsTheboardcardsareallpluggedintothepassivemotherboardofISAbusTheseboardcardsincludeintelligentsynchronizesdataacquiringcard，switchinputcard，switchoutputcardandsomeothercardsThesamplingdataofACvo

8、ltageandcurrentisacquiredbyintelligentsynchronizeddataacquiringcard，thealgorithmofrelayingandmeasurementisrealizedbytheCPU(80C196KC)ontheboard，whichsharestheworkloadoftheCPU儼111)ontheCPUmotherboardSwitchinputcardcollects

9、theinformationofbreakerdisconnectingswitch。compressorsheetandtheswitchofotherdevicesforthealgorithmofrelayingandcontrollingSwitchoutputcardisusedforsendingtripcommand，reclosingcommand，signalandothercontrollingcommandsThe

10、cardsexchangeallkindsofinformationwithCPUmotherboardthrougIlISAbusThesystemmanagementsoRware，whichrunsintheCPUmotherboard，collectstheinformationofalIcardsandrealizesthecontrollingandmanagingfunctionssuchasallkindsofcontr

11、ollingalgorithmofautomationsystem，themanagementofrelays’settingvalue，themanagementofthedatabaseofoperatingparameters，SOE(SequenceofEvents)，thedisplayofmonitorandcontrolmessagesandthebrowseofhistorydataByusingthenetworkca

12、rdor485serialportthecommunicationwithcentralcontrolcenterisrealizedtoreceiveorsendtheinformationIntheprocessoftheresearches，theauthororiginallydevelopedthekeycard(Computerrelayingintelligentsynchronicdataacquiringcardfor

13、systemconstitutionallbyitsel￡Themonitorandcontrolfunctionsfordirectioncurrentprotectionwithmultifeedlineisrealizedbythiscard，thevirtualdevicedriverforWINDOWSiscompletedforthiscardBasedonVC十嗡0thesystemmonitorandcontrolsot

14、twareisdevelopedThesystemproposedinthispaperhassuchcharacteristicsasthecompacthardwarestructure，thelessoccupiedareathecompletefunctions，theflexibilityoffunotionconfiguration。thefriendlycomputeruserinterface，andthelowerpr

15、icecomparedwithothersystemswiththesamefunctionsThissystemespeciallyfitstIlemiddleandsmallcasetypeelectricpowersubstationThissystemhasprominentinnovationinthewholesystemdesign，suchashardwarestructure，computerrelayingalgor