Cable Troubleshooting Strategies mune Akasiyana Mamiriro Ekushandisa
Iyo nzira yekuisa tambo uye nharaunda yekushandisa inokanganisa zvakanyanya kuoma kwekugadzirisa uye kusarudzwa kwemaitiro.
Yakananga-Yakavigwa Cable Fault Diagnosis: Matambudziko Nekugadzirisa
Dambudziko: Tambo yakavigwa muvhu uye haioneki; Kunyorova kwevhu uye kusiana kwekuumbwa kunokanganisa munda wemagetsi uye kupararira kwemafungu enzwi. Mapaipi ari pedyo (pombi dzemvura, pombi dzegasi, dzimwe tambo) inogona kugadzira zviratidzo zvekuvhiringidza; Ruzivo rwakarurama rwegwara retambo rwakaoma kuwana.
Yakakurudzirwa Maitiro:
Kutonga Kwekutanga: Megohmmeter uye multimeter inoshandiswa kutonga rudzi rwekukanganisa (pfupi dunhu, Vhura Dunhu, pasi mhosva, etc.).
Kusimbisa Nzira: Shandisa tambo nzira yetracer kunyatso tevera uye kumaka kwainoenda tambo kudzivirira kutsauka pakumisikidzwa kunotevera.
Pre-nzvimbo: Sarudza nzira yakakodzera maererano nemhando yekukanganisa.
Low-impedance short circuit / open circuit: TDR inosarudzwa.
High-impedance pasi kukanganisa: Iyo Sekondari Impulse Method (Hongu / ini) inosarudzwa. Kana mudziyo usingaitsigire, unogona kuedza nzira yeHigh Voltage Bridge (izvo zvinoda kupisa chikanganiso chekutanga) kana iyo acoustomagnetic nzira mushure meiyo yakakwira voltage impulse.
Fault Point Nzvimbo (Pini-inongedza): Kumisikidza chaiko uchishandisa acoustomagnetic synchronous nguva nzira mukati menzvimbo inoratidzwa ne pre-nzvimbo mhedzisiro.. A pulsed high voltage inoshandiswa kune tambo, uye ruzha rwakanyanya rwunowanikwa nekuteerera kurira kwekuyerera pasi. Nokuda kwezvikanganiso zvepasi izvo zvisingabudisi inzwi rakajeka rekubuda, iyo nhanho voltage nzira inogona kuedzwa.
Verification: Mushure mekufungidzirwa mhosva yekukanganisa inotariswa, nzvimbo duku inogona kucherwa, kana yemuno acoustomagnetic uye nhanho voltage nzira yekuongorora inogona kuitwa zvakare.
Kugadzirisa Matambudziko: Deredza kukanganisa kwenzira kuburikidza nemhando dzepamusoro-soro matracers; Sarudza acoustomagnetic inogamuchira ine yakasimba anti-kupindira kugona; Gadzirisa simba repamusoro-soro rinoenderana nemamiriro evhu; Musanganiswa wemitoo unotsinhiranisa mibairo neimwe neimwe.
Insulated Aerial Cable (ABC) Kugadzirisa matambudziko: Kurumidza Nzvimbo Mazano
Dambudziko: Mhosva dzinowanzoonekwa, asi dzakaparadzirwa zvakanyanya uye dzinosanganisira kushanda munzvimbo dzakakwirira, izvo zvinogona kuva nengozi kushanda.
Typical Mhosva: Insulation layer kuchembera nekutsemuka, kukwenya kwebazi, mheni inorova, kukuvara kweshiri nemhuka, joint process issues.
Test Process:
Visual Inspection: Nyatsoongorora mutsara, kushandisa teresikopu, kutsvaga zviri pachena carbonization traces, kupisa mavanga, mitswe, kunze muviri kupindirana, uye mamwe maratidziro akajeka eiyo insulation layer. Bhakiti marori kana drones anowedzera kushanda uye kuchengeteka.
Thermal Imaging: Makamera anopisa anoshandiswa kuona tembiricha isina kujairika inokwira mumutumbi wetambo, kunyanya pamajoini nematerminals, apo tambo iri kushanda pasi pemutoro. Kukwira kwekushisa chiratidzo chakakosha chekutadza kwekutanga kana kuwandisa.
Basic Electrical Measurement: Mushure mekudzima kwemagetsi, shandisa megohmmeter uye multimeter kuyedza insulation kuramba uye kuenderera kuti uone mhando yekukanganisa.
Mhosva Nzvimbo: Nepo kuongorora kwekuona kunogona kuratidza chikanganiso, TDR kana acoustomagnetic (kana high voltage impulse inogona kushandiswa) inogona zvakare kushandiswa kutsvaga chikanganiso kana chisiri pachena (E.e., kuparara kwemukati).
Unyanzvi: Shandisa mamepu enzira uye zviratidzo zvenzvimbo kubatsira mukumisikidza; Teerera kune pesvedzero yemamiriro ekunze pane infrared thermography uye yekuona kuongorora.
Cable Fault Diagnosis muTunnels / Cable Trenches: Environmental Impact uye Nzira dzekuona
Dambudziko: Zvakatipoteredza zvakavharirwa, uye pangava nenjodzi dzakadai semagasi anokuvadza, kushaikwa kweokisijeni, kupisa kwakanyanya, uye hunyoro hwepamusoro; Nzvimbo idiki, uye midziyo haina kunetsa kutakura uye kushanda; Kune tambo dzakawanda, uye zvakaoma kuziva tambo inonangwa; Ambient ruzha runogona kukanganisa kuonekwa kweacoustic.
Yakakurudzirwa Maitiro:
Kuongorora Kuchengetedza: Kuonekwa kwegasi uye kufefetera kunofanirwa kuitwa usati wapinda kuti uve nechokwadi chekuchengetedzwa.
Target Identification: Simbisa tambo dzakakanganiswa uchishandisa ma tag ekuzivikanwa kwetambo uye madhirowa ehurongwa.
Visual Inspection: Nyatsoongorora uchitevedza nzira yetambo, kunyanya pamajoini uye zvinotsigira, kune zviratidzo zvekukuvadza kwekudzivirira, ablation, deformation, etc.
Infrared Thermal Imaging: Inoitwa panguva yekurodha, kuona nzvimbo dzinopisa dzisina kujairika.
Pre-nzvimbo: TDR (nokuda kwekushomeka kwakaderera / kuvhurika redunhu) kana Dual Pulse Method (nokuda kwekudzivirira kwepamusoro).
Fault Point Nzvimbo: Acoustomagnetic synchronous positioning mumatanho / migero kazhinji iri nyore pane kuvigwa kwakananga nekuti kubuda kweizwi kuparadzira kwakanangana.. Shandisa yekubata acoustic sensor (akaiswa pamusoro petambo) kana mhepo-yakabatana sensor pamwe chete nemagnetic field sensor.
Chidimbu chechidimbu (PD) Kuwanikwa: Tunnel / migero inzvimbo yakanaka yekuona kubuda kwechikamu, uye ruzha rwekumashure rwakadzikama. Pamhepo kana pasina online PD ongororo inogona kuitwa uchishandisa TEV sensors (pamabhuraketi esimbi kana matireyi), HFCT sensors (pawaya dzepasi), kana ultrasonic sensors (pamusoro petambo yemuviri wepamusoro kana zvishandiso) kuona kukanganisika kwekutanga kwekudzivirira.
Submarine Cable Fault Diagnosis: Special Zvinodiwa uye Technology
Dambudziko: Zvakatipoteredza zvakanyanyisa, inoda michina yehunyanzvi isingapindi mvura uye inoshingirira; Kurongeka kwepamusoro kunodiwa nekuti mutengo wekugadzirisa wakakwira zvakanyanya; Kugadzirisa basa rakaoma.
Typical Mhosva: Anchor hooks, mambure ekuredza, ngarava anchor kukuvara, kudengenyeka kwenyika uye tsunami, muti wemukati wemvura / kuputsika kwemuti wemagetsi.
Yakakurudzirwa Maitiro:
Pre-nzvimbo: Kunyanya inotsamira pane yakakwirira-chaiyo yepasi pemvura-chaiyo TDR michina, iyo inowanzoda kushandiswa kwemabhuya kana GPS-inobatsirwa nzvimbo yekuyera. Iyo yakakwira voltage bhiriji nzira inogona kushandiswa zvakare, kana zvichibvira.
Yakananga Nzvimbo uye Kuonekwa: Zvakanyanya kuoma. Kutsvaga kwakadzama kunogona kudikanwa pamwe chete nemasona, marobhoti epasi pemvura ane acoustomagnetic sensors, kana kuti flux sensors inoona shanduko mundima yemagineti inokonzerwa nekudonha kwemvura.
Kugadzirisa Mhosva: Nyanzvi yepasi pemvura tambo yekuisa uye kugadzirisa ngarava inowanzodiwa, uye kugadzirisa kunoitwa uchishandisa tekinoroji yakanyorova kana yakaoma yakabatana, izvo zvinodhura.
Special Equipment: Submarine TDR probe, pasi pemvura acoustomagnetic synchronous receiver, ROV (Mota Inoshandiswa Kure).
Communication Cable (Fiber/Mhangura) Kugadzirisa matambudziko: OTDR uye Zvimwe Zvishandiso
Communication cable fault diagnosis yakasiyana netambo dzemagetsi, kunyanya tambo dzefiber optic.
Fiber Optic Cable Fault:
Typical Mhosva: Fiber dzakaputsika, tsvina/yakakuvadzwa zvibatanidza, kurasikirwa kwakanyanya kwesplice, yakawandisa bending radius (macrobend/microbend).
Basic Tool: Optical Time Domain Reflectometer (OTDR).
Nheyo: Zvakafanana neTDR, iyo OTDR inoendesa mwenje pulses mufiber uye inoongorora Rayleigh kuparadzira uye Fresnel kuratidza masaini munzira yefiber.. Nekuongorora chimiro uye chinzvimbo chekuratidzira/kuparadzira curve, zvinokwanisika kuziva urefu, kutarisana, splice kurasikirwa, connector kurasikirwa, uye nzvimbo yefiber break point.
Zvishandiso: Nyatsoyera kurasikirwa kwekugoverwa kwefiber links, tsvaga mabreak, mapoinzi ekurasikirwa kwepamusoro, connector, kana splice issues.
Zvimwe Zvishandiso:
Chiedza Chinobva uye Power Meter: Inoshandiswa kuyera kurasikirwa kwese kweiyo optical link uye kuona kana paine dambudziko.
Visual Fault Locator (VFL): Inopenya mwenje dzvuku inoonekwa kuti ione faibha kuputika, bends, kana matambudziko ekubatanidza pazvinhambwe zvipfupi (iyo fiber jacket inofanira kuva optically isina-dense).
Fiber Microscope: Inotarisa zviso zvekubatanidza zvinoguma zvehutsanana, makwara, kana kukanganisa.
Mhangura Cable Fault:
Typical Mhosva: Vhura dunhu, pfupi dunhu, wiring isiriyo, Vhura Dunhu, crosstalk, kurasikirwa kwekudzoka kwakanyanya.
Basic Tools: Cable Certifier/Tester kana TDR (zvemaseketi akavhurika, zvipfupi zvapera).
Zvishandiso: Yera kureba kwepeya, wiring scheme (kuona mapfupi maseketi, anovhura, mis-waya, vakayambuka vaviri vaviri), Near-End Crosstalk (ZVINOTEVERA), Far-End Crosstalk (FEXT), kudzokera kurasikirwa, kuisa kurasikirwa, uye mamwe ma parameter ekuongorora mashandiro emhangura uye kutsvaga zvikanganiso. Iyo TDR basa rinowanzo shandiswa kunongedza rakavhurika kana pfupi redunhu mapoinzi.
Kuongorora kwakadzama kweTypical Cable Fault Cases
Kubatanidza dzidziso uye kuita ndiyo kiyi yekuziva tekinoroji. Heano mamwe akajairwa tambo yekutadza kuongororwa kesi mune dzakasiyana mamiriro.
Nyaya 1: Imwe-Pase Ground Mhosva yeHigh-Voltage Power Cable muChemikari Plant
Background: Munharaunda yemiti yakakura yemakemikari, imwe-phase ground fault alarm yakaitika pane inobuda feeder ye 35kV XLPE insulated simba tambo mukushanda, zvichikonzera kudzimwa kwemagetsi munzvimbo yakakanganiswa.
Fault Phenomenon: Iyo sisitimu yekudzivirira pasi mudziyo yakashanda, uye circuit breaker yakagumburwa. Mushandi akaedza kudzokorora, asi relay yakashanda zvakare.
Diagnostic Matanho uye Maitiro:
Kutonga Kwekutanga
Mushure mekudzima kwemagetsi, shandisa 2500V megohmmeter kuyedza kudzivirira kwekudzivirira kwetambo ine mhosva. Kudzivirira kwekudzivirira kwezvikamu A uye B zvakajairika (> 2000 MΩ), uye kudzivirira kwekudzivirira pakati pechikamu C uye pasi kunoderera zvakanyanya, kuti chete 5 MΩ. Zvinotanga kutongwa semhosva yepasi pachikamu C, uye kushorwa panzvimbo yekukanganisa ndeyepakati-kusvika-yakakwirira kuramba.
Pre-nzvimbo
Sezvo iri high-impedance kukanganisa, kushandisa zvakajairwa TDR zvakananga zvinogona kusashanda. Chikwata chinoshanda chakafunga kushandisa Ultra-Low Frequency AC Hipot (VLF) kuyedza neDielectric Loss (Saka delta) uye Kusunungurwa Kwakakwana (PD) kuongororwa kwepre-nzvimbo uye kuongorora mamiriro etambo panguva imwe chete. Batanidza iyo VLF tester pakati pechikamu C uye pasi, uye shandisa 0.1 HZ, 2U0 (anenge 40kV) AC voltage. Panguva yekuedzwa, zvakaonekwa kuti tanδ kukosha kwechikamu C yakakurumidza kuwedzera nekuwedzera kwemagetsi, uye inoenderera yakakura-amplitude chikamu chekuburitsa chiratidzo chakaonekwa. Nekuongorora maitiro ekuparadzira chiratidzo (senge mutsauko wenguva yekumisikidza), iyo fault point inofungidzirwa kuti inowanikwa pamusoro 1.2 km kure nechiteshi.
Precise Positioning (Quadratic Impulse Method)
Kuitira kufanotsvaga nzvimbo nemazvo kune kunotevera kunongedza, iye O&M timu yakashandisa tambo yekukanganisa tester ine quadratic impulse function. Batanidza yakakwira voltage impulse jenareta (seti kusvika ku15kV) kuchikamu C uye pasi, uye isa tambo tester kune yechipiri impulse mode. Mushure mekushandisa high voltage impulse, flashover inoitika panzvimbo yekukanganisa, uye iyo cable tester inotora yakajeka arc reflection waveform. Iyo waveform yakaongororwa, uye chinhambwe chekukanganisa chakaverengerwa kuve 1.22 km. Migumisiro yenzvimbo mbiri dzepre-nzvimbo dzaive dzakanyanya kuenderana.
Fault Point Detection (Acoustomagnetic nzira)
Zvinoenderana nepre-nzvimbo mhedzisiro ye 1.22 km, O&M vashandi vakatakura acoustomagnetic synchronous receiver uye vakateerera kune ruzha pasi munzvimbo yakapoteredza. 1.2 km nenzira inoratidzwa neradiometer (nzira yekutsvaga). Iyo tambo nzira tracer yakasimbisa chaiyo tambo nzira pasi kare. Mushandi akanyatsoteerera pasi paaishandisa 15kV high voltage impulse, ndokuzonzwa ruzha rwakanyanya kuyerera nechekure 1225 mamita kubva kumagumo ekuedzwa. Yakasanganiswa neyakawiriraniswa kutonga kweiyo magnetic field signal, the precise location of the fault point was determined.
Excavation and Verification
A small excavation area was made at the location determined by the acoustomagnetic method, and it was found that the cable had a joint with blackened traces on the outer insulation. Dissection of the joint revealed that the internal filling (E.e., silicone grease) had failed, and moisture intrusion had led to moisture deterioration of the insulation, forming electrical trees, which eventually broke down and discharged at high voltage. The fault point was exactly the same as the diagnostic result.
Solution: Replace the faulty joint and check other joints from the same batch, performing preventive replacement or hidden danger treatment.
Nyaya 2: Rapid Repair of Communication Cable Fiber Fault in a Data Center
Background: Nzvimbo huru yedata yakawedzera huwandu hwayo uye yakaisa batch nyowani yemultimode fiber optic cables. Panguva yekumisikidzwa, zvakaonekwa kuti fiber optic link inobatanidza zvivako zviviri haigone kutaurirana zvakanaka, uye kurasikirwa kwechiratidzo chekuona kwaive kwakakura.
Fault Phenomenon: Kuburikidza nekuongorora kwemagetsi emagetsi emagetsi, yakawanikwa kuti iyo optical link kurasikirwa yakanga yakanyanya kupfuura yaitarisirwa, pedyo nekusingaperi, uye fibre optic yaifungidzirwa kuti yakatyoka.
Diagnostic Matanho uye Maitiro:
Kutonga Kwekutanga
Kupera-kusvika-kumagumo bvunzo kwakaitwa pachishandiswa chiedza sosi uye optical simba mita, uye yakasimbiswa kuti chinongedzo chaive chisina kuvhurika dunhu uye kurasikirwa kwacho kwakakwira zvakanyanya. Inofungidzirwa kuti yakatyoka kana kubhenda zvakanyanya fiber.
Mhosva Nzvimbo (OTDR)
Batanidza iyo OTDR kune imwe mugumo mukamuri yemidziyo uye sarudza yakakodzera optical wavelength (E.e., 850nm kana 1300nm, zvinoenderana nemultimode fiber). Mushure mekunge OTDR yaburitsa kupuruzira kwakareruka, hombe Fresnel reflection peak yainyatso ratidzwa pane waveform graph, ichiteverwa nekusapararira kana kuratidzwa chiratidzo. Izvi zvinoratidza kuti faibha yakaputsika zvachose panguva iyoyo. Iyo OTDR yakaverengera otomatiki kuti nzvimbo yekuzorora yaive iripo 356 mamita kubva kumagumo ekuedzwa.
Pa-saiti Tsvaga uye Verification
Maererano nechinhambwe che 356 mamita, O&M vashandi vakasanganiswa nemugero wepombi nemadhirowa ewaya dzebhiriji kuti vatsvage. Mugomba wepombi anenge 350 mamita kubva kune optical fiber kubuda kwekamuri yemidziyo, zvakaonekwa kuti optical fiber inogona kunge yakapwanyika kana kukotama panguva yekugadzira pombi, zvichiita kuti optical fiber iparare. Kuongorora kwekuona kwakasimbisawo kuzorora.
Solution
Fiber optic splicing kugadzirisa mugomba repombi. Shandisa fiber cleaver kutema magumo akatyoka, chenesa fiber, uye shandisa fusion splicer kunyatsoenderana uye weld migumo. Mushure mokunge splicing yapera, chinongedzo chinoyedzwa zvakare neOTDR kuratidza kuti kurasikirwa kwesplice kunokodzera (kazhinji < 0.1 dB) uye chiratidzo chiri kumagumo kwechibatanidza chakajairika. Iyo link yakadzoreredza kutaurirana.
Chidzidzo Chadzidzwa
Fiber break point nzvimbo ndeimwe yeakanyanya kirasi mashandisirwo eOTDR, iyo inokurumidza uye yakarurama. Zvematambo ekutaurirana, kunze kwekutyora mapoinzi, OTDR inogona kunyatso ongorora zvikanganiso senge yakakwira-kurasikirwa splices, connector nyaya, uye macrobends.
Nyaya 3: Kuongororwa Kwakakwana kweKukanganisa Kwepamusoro-Kupokana muMedium Voltage Cables muIndustrial Parks.
Background: A 10kV ring main unit (RMU) tambo inobuda (XLPE insulation) in an industrial park frequently experiences instantaneous single-phase ground faults, causing the RMU to trip, but most reclosures are successful. The fault phenomenon is intermittent.
Fault Phenomenon: The system’s protection device operates instantaneously, and the record shows it is a single-phase ground fault, but the fault does not continue, and reclosing is successful. Megohmmeter test insulation resistance is within the normal range, but breakdown occurs when performing the VLF withstand voltage test.
Diagnostic Matanho uye Maitiro:
Kutonga Kwekutanga
Instantaneous, intermittent failure and normal megohmmeter test, high suspicion is a high-impedance fault or flashover fault, which may be related to voltage level and environmental changes. Megohmmeters are unable to detect such faults.
Insulation Assessment (VLF + Saka delta + PD)
A 0.1 HZ, 1.5 U0 voltage boosting test inoitwa patambo uchishandisa VLF inomira voltage test equipment (yakaderera pane yakajairwa kushingirira kukosha kwevoltage kudzivirira kupisa nzvimbo yekukanganisa). Mukuita kuwedzera voltage, inowanikwa kuti dielectric kurasikirwa tanδ kukosha kunowedzera zvakanyanya uye kwete-linearly nekuwedzera voltage, uye chiratidzo chinopfuurira chekuburitsa chikamu chinooneka kana imwe voltage yasvika. Ongorora maitiro echiratidzo chePD kuti uone kana kukanganisa kungavepo mumutumbi wetambo kana pamubatanidzwa. Basa renzvimbo rinoratidza kuti kukanganisa kunenge kune imwe nzvimbo munzvimbo yetambo.
Precise Positioning (Quadratic Impulse Method + Acoustomagnetic nzira)
Kuti utange-kuwana uye kunyatso tsvaga, zvakafanira kuti “excite” chikanganiso chekuita kuti chigadzikane panguva ye-high-voltage discharge kana kuputsika. Connect the cable to the cable fault test van (containing the high voltage impulse generator and the secondary impulse main unit). Chekutanga, try to pre-locate using the quadratic impulse method, setting the voltage to be close to the peak operating voltage (E.e., 15KV). After several impulses (thumps), a distance estimation (E.e., 750 mamita) is obtained. Zvadaro, acoustomagnetic pinpointing is conducted on the cable path around 750 mamita. A pulsed high voltage was applied, the ground sound was carefully listened to, the magnetic field signal was observed, and finally, the loudest discharge sound was heard at a distance of 755 mamita kubva kumagumo ekuedzwa.
Excavation and Verification
Excavation at this point revealed that the cable was located in an underground trench with a prefabricated joint at this location. Inspect the appearance of the joint and find that the sealing tape was slightly damaged, and moisture intrusion was suspected. Mushure mekucheka mubatanidzwa, madiki emagetsi ekuburitsa zviteshi zvakawanikwa pane chinongedzo pakati peiyo insulation stress cone uye cable body insulation layer, izvo zvakaratidza kuti chikanganiso apa ndicho chikonzero chekukanganisa kwepamusoro-kupikisa flashover kukanganisa.
Solution
Tsiva chinongedzo chakashata (mubatanidzwa). Sezvo chibatanidza chakagadzirirwa uye chine hupenyu hurefu hwebasa, mamwe majoini pane imwechete cable chikamu anoedzwa kuongororwa kwekudzivirira (E.e., ultrasonic kana TEV chikamu chekubuda bvunzo) kuongorora mamiriro avo.
Chidzidzo Chadzidzwa
Nekukanganisa kwepamusoro-impedance kukanganisa, basic megohmmeter bvunzo dzinowanzo kushaya basa uye dzinoda kusanganiswa neakakwira voltage kuyedzwa (VLF) uye nzira dzepamusoro dzekuongorora (quadratic impulse nzira, acoustomagnetic nzira) kunyatsoongorora uye kutsvaga. Kushivirira uye kunyatsoongorora pa-saiti kwakakosha.
Kuvaka Inoshanda Cable Fault Prevention uye Maintenance System
“Kudzivirira kuri nani pane kurapa”. Kubudirira kwekudzivirira kuchengetedza kunogona kuderedza zvakanyanya kutadza kwetambo mitengo, wedzera hupenyu hwetambo, kuderedza kudzimwa kwemagetsi, uye pasi O&M mari.
Periodic Preventive Testing uye Inspection Programs
Kumisikidza uye kunyatsoita chirongwa chekuongorora tambo ndiyo hwaro hwekudzivirira kutadza:
Gore/Term Zvinhu:
Insulation Resistance Test: Yera nguva nenguva kuti uone kuchinja kwayo. Kudzikira kunoramba kuripo kwekushomeka kwekudzivirira kukosha chiratidzo chakakosha chekuchembera kwekuchembera.
Chidimbu chechidimbu (PD) Monitoring: Kunyanya kune mitsara yakaoma uye tambo dzekuchembera. Kukanganisa kwekutanga kwekudzivirira kunogona kuonekwa pasina Indaneti (E.e., pamwe chete neVLF inomira voltage) kana kuburikidza ne online monitoring.
Tan Delta Test: Kazhinji inoitwa pamwe chete neVLF inomira voltage, inoongorora huwandu hwese hwehunyoro kana kuchembera kwetambo.
DC Inomira Voltage Leakage Yazvino Muedzo: Nepo VLF ichinyanya kukurudzirwa XLPE tambo, kuchine maapplication eDC kuyedzwa kwetambo dzemafuta-pepa, etc., kutarisa pakuchinja kwekudonha kwezvino nekufamba kwenguva.
Quarterly/Inspection Items:
Connector/Kugumisa Tembiricha Yekuongorora: Shandisa inodziya kamera kana infrared thermometer kuti ugare uchitarisa tembiricha yepasi yemajoini etambo uye misoro yekugumisira. Tembiricha yakakwira zvisingaite ingaratidza kusabatana zvakanaka, kunyanyisa kuonana kuramba, kana kukanganisa mukati.
Operating Environment Inspection: Tarisa kana tambo mugero, mugero, chivharo chegomba, rutsigiro, kudzivirira moto, etc., vari muchimiro chakanaka, uye kuti pane nyaya dzakaita semvura yakamira here, zvinhu zvakasiyana-siyana, magasi anoparadza, uye kubatwa nemhuka.
Chitarisiko Kuongorora: Ongorora uye tarisa kana tambo muviri, sheath, nhumbi dzokurwa, uye anti-corrosion layer ine kukuvara, deformation, bulging, nezvimwe zvinhu zvisina kujairika.
Kuunza Smart Online Monitoring Technology
Nekuvandudzwa kwemichina, smart online monitoring masisitimu anogona kupa inoenderera uye yakazara ruzivo nezve inoshanda mamiriro etambo, kuwana shanduko kubva pakugadzirisa nguva nenguva kuenda kumamiriro ekutarisa uye kufungidzira kuchengetedza.
Distributed Temperature Sensing (DTS): Kugovera tembiricha yetambo yese yetambo inotariswa munguva chaiyo uchishandisa optical fiber yakaiswa padivi petambo. Iyi inzira inoshanda yekudzivirira kuchembera kwemafuta uye kuwandisa zvikanganiso nekukwanisa kuona tambo dzakawandisa., kusapisa kupisa kwakashata, kana pesvedzero yekunze kwekupisa manyuko munguva.
Online Partial Discharge (PD) Monitoring System: HFCT, Tev, or ultrasonic sensors are installed at cable terminals and critical joints to monitor PD signals 24/7. Through data collection, Kuongorora, and trend assessment, early insulation defects can be found in time.
Conditional Online Monitoring Platform: Integrate DTS, online PD, current, voltage, tembiricha, humidity, and other sensor data, through big data analysis and artificial intelligence algorithms, comprehensively evaluate and predictively diagnose the health status of cables, and find hidden dangers in advance.
Optimizing Design, Construction, and Operation Management
Design Stage: Reasonable selection of cable type and cross-section, consideration of laying environment, load characteristics, and short-circuit capacity; Optimize routing to avoid corrosive areas and areas prone to external damage; Standardize the design of cable tunnels and channels to ensure good ventilation and heat dissipation.
Kuvaka Danho: Kunyatso shandisa mirairo yekuisa maitiro, kudzora tambo yekukweva tension uye bending radius; Iva nechokwadi chehutano hwemusoro wetambo uye majoini, shandisa zvinhu zvinokwanisa, uye simbisa chisimbiso chakanaka; Tsanangudzo ye backfill zvinhu uye kudzika (nokuda kwetambo dzakavigwa zvakananga); Ita basa rakanaka rekuvhara chubhu zvakanaka uye mukoto wemukoto kudzivirira mhuka nehunyoro kupinda; Strict handover tests (E.e., VLF inomira voltage + tanδ bvunzo + PD bvunzo) anoitwa patambo dzichangoiswa.
Operation Management: Dzivisa kushanda kwenguva refu kwekuremedza kwetambo; Simbisa manejimendi etirasti yekuvaka kudzivirira kukuvara kwesimba rekunze; Mvura yakachena nemarara muchiteshi chetambo nenguva; Dhiyabhorosi data inotariswa uye kuongororwa.
Kuvandudza Unyanzvi hweVashandi uye Emergency Response Matanho
Professional Training: Gara uchidzidzisa tambo O&M vashandi vari pamhanho yekuongorora tekinoroji uye nzira dzekuchengetedza kuchengetedza kuti vaone kuti vane hunyanzvi mukushandisa michina yekuyedza yepamusoro uye kugona kuongorora kukanganisa..
Emergency Plan: Gadzira hurongwa hwechimbichimbi hwakadzama hwekutadza kwetambo, jekesa munhu ane mutoro, kurasira nzira, uye kugadzirira zvinhu kune imwe neimwe link, uye kupfupisa nguva yekupindura kukanganisa.
Zvishandiso: Yakashongedzerwa neyakakwana uye yakavimbika yekutadza kuongororwa michina uye kuchengetedza kuchengetedza michina.
Mhedziso: Kusvika kune Yakangwara uye Inofanotaura Ramangwana reCable Operation uye Maintenance
Kukanganisa kwetambo idambudziko rakakura rinokanganisa kuvimbika kwesimba, kutaurirana, uye maindasitiri masisitimu. Mastering systematic chikanganiso chekuzivikanwa uye yekuongorora tekinoroji ndiyo kiyi yekudzikisa kurasikirwa uye kuve nechokwadi chekushanda kwakachengeteka. Iri gwara rinogadzirisa zvakajairika tambo dzekutadza mhando uye zvikonzero, inosuma akajairwa uye epamusoro tekinoroji ekuona uye michina mune zvakadzama, uye inopa maitiro ekugadzirisa matambudziko ezviitiko zvakasiyana, yakawedzerwa neyakajairwa kesi kuti ikubatsire kunzwisisa.
Kutarisira, nekubatanidzwa kwakadzika kwematekinoroji akadai seInternet Yezvinhu, Huru data, uye ungwaru hwekunyepedzera, tambo kushanda uye kugadzirisa kuri kukurumidza kusimudzira kune hungwaru uye kufanotaura. Iyo smart diagnostic system yakavakirwa pa online yekutarisa data inogona kuwana inoenderera yekuongorora uye yekutanga yambiro yetambo mamiriro, kuitira kuti uchinje kubva pakugadziriswa kwechimbichimbi kuenda kukugadzirisa kunoshanda, kuwedzera kukosha kwezvinhu zvetambo, uye kuvaka imwe yakavimbika uye yakatsiga simba kutapurirana uye ruzivo network.
Isu tinokurudzira kuti maindasitiri akakodzera arambe achiisa mari mumatekinoroji epamusoro ekuona uye masisitimu ekutarisa akangwara, kusimbisa kudzidziswa kwevashandi, uye ramba uchinatsiridza maitiro ekushanda nekugadzirisa kuti utsungirire nekuwedzera kuoma kwekushanda nharaunda uye kukura kwekuvimbika zvinodiwa
