Kuedzwa kwerelay relay Relay ndiyo chinhu chakakosha chemita yemagetsi inobhadharwa kare yakangwara. Hupenyu hwerelay hunosarudza hupenyu hwemita yemagetsi kusvika pamwero wakati. Kushanda kwemuchina kwakakosha zvikuru pakushanda kwemita yemagetsi inobhadharwa kare yakangwara. Zvisinei, kune vagadziri vazhinji verelay vemuno nevekunze, avo vanosiyana zvikuru muhukuru hwekugadzira, nhanho yehunyanzvi uye maparamita ekushanda. Naizvozvo, vagadziri vemita yesimba vanofanirwa kuve nemidziyo yakakwana yekuona pavanenge vachiyedza nekusarudza relay kuti vave nechokwadi chehunhu hwemita yemagetsi. Panguva imwecheteyo, State Grid yakasimbisawo kuona sampuli yemaparamita ekushanda kwerelay mumamita emagetsi akangwara, izvo zvinodawo michina yekuona inoenderana kuti iongorore hunhu hwemita yemagetsi inogadzirwa nevagadziri vakasiyana. Zvisinei, michina yekuona relay haina chete chinhu chimwe chete chekuona, maitiro ekuona haagone kuitwa otomatiki, data rekuona rinofanira kugadziriswa nekuongorora nemaoko, uye mhedzisiro yekuona ine mhando dzakasiyana uye yekugadzira. Uyezve, kushanda zvakanaka kwekuona kwakaderera uye kuchengetedzeka hakugone kuvimbiswa [7]. Mumakore maviri apfuura, State Grid yakagadzirisa zvishoma nezvishoma zvinodiwa zvehunyanzvi zvemamita emagetsi, yakagadzira zviyero zveindasitiri zvine chekuita nehunyanzvi uye zvirevo zvehunyanzvi, izvo zvakaisa mamwe matambudziko ehunyanzvi ekuona ma parameter e relay, akadai sekukwanisa kurodha nekudzima relay, bvunzo yehunhu hwekuchinja, nezvimwewo. Saka, zvakakosha kudzidza mudziyo kuti uwane kuona kwakazara ma parameter ekushanda kwe relay [7]. Zvichienderana nezvinodiwa zve relay performance parameters test, zvinhu zvekuedza zvinogona kukamurwa muzvikamu zviviri. Chimwe chezvinhu zvekuedza zvisina load current, senge action value, contact resistance uye mechanical life. Chechipiri chine load current test zvinhu, senge contact voltage, electrical life, overload capacity. Zvinhu zvikuru zvekuedza zvinounzwa muchidimbu seizvi: (1) action value. Voltage inodiwa pakushanda kwe relay. (2) Contact resistance. Resistance value pakati pe contacts mbiri kana magetsi avharwa. (3) Mechanical life. Mechanical parts kana pasina kukuvara, huwandu hwe relay switch action. (4) Contact voltage. Kana electric contact yavharwa, load current inoshandiswa mu electric contact circuit uye voltage value pakati pe contacts. (5) Hupenyu hwemagetsi. Kana voltage yakayerwa yakaiswa kumativi ese e relay driving coil uye rated resistive load yakaiswa mu contact loop, cycle iri pasi pe300 times paawa uye duty cycle iri 1∶4, nguva dzekushanda dzakavimbika dze relay. (6) Overload capacity. Kana rated voltage ikashandiswa kumativi ese e relay's driving coil uye 1.5 times ye rated load ikashandiswa mu contact loop, trust operation times ye relay inogona kuwanikwa pa operation frequency ye (10±1) times/min [7]. Mhando, semuenzaniso,, mhando dzakasiyana dze relay, dzinogona kupatsanurwa ne input voltage relay speed, current relay, time relay, relay, pressure relay, nezvimwewo, zvichienderana ne principle yebasa zvinogona kupatsanurwa kuita electromagnetic relay, induction type relay, electric relay, electronic relay, nezvimwewo, zvichienderana nechinangwa zvinogona kupatsanurwa kuita control relay, relay protection, nezvimwewo, zvichienderana ne input variable form inogona kupatsanurwa kuita relay uye measurement relay. [8] Kunyangwe relay yakavakirwa pakuvapo kana kusavapo kwekupinda, relay haishande kana pasina input, relay action kana paine input, senge relay yepakati, relay yepakati, relay yenguva, nezvimwewo. [8] Kuyera relay kwakavakirwa pakuchinja kwekupinda, input inogara iripo kana ichishanda, chete kana input yasvika pane imwe kukosha kwerelay ichashanda, senge current relay, voltage relay, thermal relay, speed relay, pressure relay, liquid level relay, nezvimwewo. [8] Electromagnetic relay Schematic diagram ye electromagnetic relay structure Mazhinji erelay anoshandiswa muma control circuits ma electromagnetic relay. Electromagnetic relay ine hunhu hwechimiro chiri nyore, mutengo wakaderera, kushanda kwakanaka uye kugadzirisa, kugona kudiki kwekubata (kazhinji pasi peSA), huwandu hwakawanda hwekubatana uye pasina main and assistant points, hapana arc extinguishing device, saizi diki, kukurumidza uye kwakarurama action, sensitive control, yakavimbika, nezvimwewo. Inoshandiswa zvakanyanya mu low-voltage control system. Electromagnetic relay dzinoshandiswa kazhinji dzinosanganisira current relay, voltage relay, intermediate relay uye akasiyana-siyana madiki general relay. [8] Chimiro chemagetsi erelay uye musimboti wekushanda zvakafanana necontactor, inonyanya kuumbwa nemagetsi emagetsi uye kubatana. Marelay emagetsi ane zvese DC neAC. Voltage kana current inowedzerwa kumativi ese ecoil kuti igadzire simba remagetsi. Kana simba remagetsi rakakura kupfuura simba rekuita kwechitubu, armature inodhonzwa kuti contacts dzinovhurwa uye dzakavharwa dzifambe. Kana voltage kana current yecoil yadonha kana kunyangarika, armature inoburitswa uye kubatana kunodzoserwa patsva. [8] Thermal relay Thermal relay inonyanya kushandiswa kudzivirira overload michina yemagetsi (kunyanya mota). Thermal relay rudzi rwebasa rinoshandisa musimboti wekupisa wazvino wemidziyo yemagetsi, iri pedyo nemota inobvumira overload hunhu hwe inverse time hunhu, inonyanya kushandiswa pamwe chete necontactor, inoshandiswa kudzivirira overload yemota yechitatu-phase asynchronous uye phase failure yemota yechitatu-phase asynchronous mukushanda chaiko, inowanzo tarisana nezvikonzero zvemagetsi kana zvemakanika zvakaita se overcurrent, overload uye phase failure). Kana overcurrent isiri yakakura, nguva yacho ipfupi, uye windings isingapfuure kukwira kwekupisa kunobvumidzwa, overcurrent iyi inobvumirwa; Kana simba remagetsi rakanyanya kuoma uye rikagara kwenguva yakareba, rinokurumidzisa kukwegura kwemota uye kutopisa mota. Saka, mudziyo wekudzivirira mota unofanirwa kuiswa mudunhu remota. Kune mhando dzakawanda dzemidziyo yekudzivirira mota inoshandiswa zvakanyanya, uye inonyanya kushandiswa isimbi plate thermal relay. metal plate type thermal relay ine zvikamu zvitatu, kune mhando mbiri dzine uye dzisina phase break protection. [8]Time relay Time relay inoshandiswa kudzora nguva mudunhu rekutonga. Rudzi rwayo rwakanyanya, zvichienderana nepfungwa yayo yekushanda inogona kukamurwa kuita electromagnetic type, air damping type, electric type uye electronic type, zvichienderana nepfungwa yekunonoka inogona kukamurwa kuita power delay delay uye power delay delay. Air damping time relay inoshandisa pfungwa yeair damping kuti iwane nguva delay, iyo inoumbwa ne electromagnetic mechanism, delay mechanism uye contact system. Electromagnetic mechanism inoshanda zvakananga kaviri E-type iron core, contact system inoshandisa I-X5 micro switch, uye delay mechanism inoshandisa airbag damper. [8]kuvimbika1. Kupesvedzera kwezvakatipoteredza pakuvimbika kwerelay: avhareji yenguva pakati pekukundikana kwerelay dzinoshanda muGB neSF ndiyo yakakwira, inosvika 820,00h, nepo munzvimbo yeNU, i600,00h chete. [9]2. Kupesvedzera kwegiredhi remhando yepamusoro pakuvimbika kwerelay: kana relay dzemhando yepamusoro dzeA1 dzasarudzwa, avhareji yenguva pakati pekukundikana inogona kusvika 3660000h, nepo avhareji yenguva pakati pekukundikana kwerelay dzeC-grade iri 110000, nemusiyano we33. Zvinogona kuonekwa kuti giredhi remhando yepamusoro rerelay rine simba guru pakushanda kwadzo kwekuvimbika. [9]3, simba pakuvimbika kwefomu rekuonana re relay: fomu rekuonana re relay richakanganisawo kuvimbika kwaro, kukanda kamwe chete kuvimbika kwerudzi rwerelay kwaive kwakakwira kupfuura nhamba yerudzi rumwe rwebanga re double throw relay, kuvimbika kunoderera zvishoma nezvishoma nekuwedzera kwenhamba yebanga panguva imwe chete, ndiyo avhareji yenguva pakati pekukundikana single-pole single-throw relay four knives double-throw relay ye5.5 times. [9]4. Kukanganiswa kwerudzi rwechimiro pakuvimbika kwerelay: kune mhando makumi maviri nemana dzechimiro cherelay, uye rudzi rumwe nerumwe rune simba pakuvimbika kwarwo. [9]5. Kukanganiswa kwekupisa pakuvimbika kwerelay: tembiricha yekushanda kwerelay iri pakati pe -25 ℃ ne70 ℃. Nekuwedzera kwekupisa, avhareji yenguva pakati pekukundikana kwerelay inoderera zvishoma nezvishoma. [9]6. Kukanganiswa kwehuwandu hwekushanda pakuvimbika kwerelay: Nekuwedzera kwehuwandu hwekushanda kwerelay, avhareji yenguva pakati pekukundikana inowanzoita kuti iderere zvakanyanya. Naizvozvo, kana dunhu rakagadzirwa richida kuti relay ishande nekukurumidza, zvinodikanwa kuti ione relay nekungwarira panguva yekugadzirisa dunhu kuitira kuti igone kutsiviwa nenguva. [9]7. Kukanganiswa kwehuwandu hwemazuva ano pakuvimbika kwerelay: iyo inonzi current ratio iratio yekushanda kwe load current yerelay kune rated load current. Chiyero chemagetsi chine simba guru pakuvimbika kwerelay, kunyanya kana chiyero chemagetsi chiri chikuru kupfuura 0.1, avhareji yenguva pakati pekukundikana inoderera nekukurumidza, nepo chiyero chemagetsi chiri pasi pe0.1, avhareji yenguva pakati pekukundikana inoramba yakafanana, saka mutoro une current yakayerwa yakakwira unofanirwa kusarudzwa mukugadzirwa kwedunhu kuderedza chiyero chemagetsi. Nenzira iyi, kuvimbika kwerelay uye kunyange dunhu rese hazvizoderedzwe nekuda kwekuchinja kwemagetsi ari kushanda.
