Ruzivo rwemumunda kubva kufekitari yeSaudi PV ye150 MW (4,200 chemical electrodes, 3.1 Ω avhareji yekudzivirira mapad) uye kutumira kunze kwenyika kweME/Africa/SEA: nei tsvimbo dzinofambiswa nemhepo dzakajairwa dzichikundikana muvhu rine jecha, matombo uye rakadzika - uye zvinotaurwa negwaro rekutenga panzvimbo pezvo.
TL;DR — Mhando nhatu dzevhu, nzira nhatu dzekukundikana, mhinduro imwe chete yekutenga
- Ivhu rejechakazhinji kacho 3,000 kusvika 10,000 Ω·cm kana yaoma. Pakutumira kwedu kweME 2020-2025, nzvimbo dzinofambiswa netsvimbo chete mubhendi iri dzaiverenga 18-42 Ω panguva yekuiswa uye dzakadzoserwa mukati megore rekutanga; nzvimbo dziri pedyo netsvimbo dzemakemikari mubhendi rimwe chete dzaiverenga avhareji ye3.6 Ω.
- Ivhu rine matomboine caliche kana granite layer yakakuvara pa 2-3 m yakamira yakadzika pakona yekumaodzanyemba kwakadziva kumadokero kwenzvimbo ye150 MW Saudi — caliche pa 3.5 m. Mapedhi matanhatu ipapo aive pamusoro pe 4.7 Ω kunyangwe mushure mekuwedzerwa kwetsvimbo. Chinja kune delta-pattern doubled electrodes pamwe ne column graphite ground modules.
- Ivhu reLateriteinoshanduka kubva pamazana mashoma Ω·cm munguva yemvura kusvika pamusoro pe5,000 Ω·cm munguva yemvura. Rodhi yakajairika inopfuura kushanda muna Chikumi inogona kukundikana pahwindo remagetsi panosvika Kukadzi. Kudzokera kwerodhi remakemikari rinochengeta hunyoro kuburikidza nekudonha kwemvura munguva yemvura.
Hurukuro yandinoda kusimbisa nyaya iyi yakaitika muna Nyamavhuvhu 2020, apo EPC iri muMadrid yakatumira ongororo yakazova purojekiti ye150 MW Saudi PV data renyaya iyi rinobva. Email yemubvunzo yakabvunzwa nezvetsvimbo dzepasi dzemakemikariyenzvimbo yePV ine simba guru uko ongororo yekusagona kunyura muvhu yakanga yadzoka mu1,500 kusvika 2,200 Ω·cm band. Mushumo we geotech waive wakajeka, EPC yaive nehunyanzvi, uye nzvimbo iyi yakanga iri mubhandi re caliche iro mainjiniya aitungamira akaona papurojekiti diki muChile muna 2018 uko zvinhu zvakaiswa mvura zvakapfuura mwero we touch-voltage mugore rechitatu nekuti kushanya kaviri kwakarongwa kwekudiridza kwakasiyiwa panguva yezvirambidzo zvekufamba kweCOVID. Haana kuda kudzokorora izvozvo. Nyaya yauri kuverenga inyaya yeinjiniya yakabuda muemail iyoyo - hurongwa hwemhando yevhu hwakazonyorwa neEPC mugwaro rekutenga, uye data remunda kubva kufekitori rakaigadzira.
Gwaro iri nderezvikwata zvekutenga zvinhu zviri kubvunzwa zvakafanana: varidzi vemapurojekiti eME, Africa neSEA vane mushumo we geotech uri padhesiki, vane timu yekugadzira vari kukumbira electrode yemakemikari kwete tsvimbo inofambiswa, uye vane gwaro rekutenga rinofanira kunyorwa mumavhiki maviri anotevera. Mhando nhatu dzevhu dziri pazasi - jecha, dombo uye laterite - ndidzo dzinoonekwa kazhinji mumishumo iyoyo, uye nzira dzekukundikana dzakanangana neumwe neumwe. Chisingachinje pane zvitatu izvi mhinduro yekutenga.
1. Ivhu Rejecha — Kukundikana Kwewaya Mumhepo
Jecha rakaoma ndiro rinonyanya kupesana nepfungwa dzemhando nhatu dzekutadza. Papepa rinotaridzika senzvimbo yakanaka kwazvo yekunyungudutsa: harina kusimba, rinobuda mvura zvakanaka, uye zviri nyore kurishandisa. Zvisinei, kuverenga kweWenner kwemapini mana kunotaura nyaya yakasiyana. Jecha remugwenga rakaoma pakadzika kwe1 m rinowanzo kuverenga pakati pe3,000 ne10,000 Ω·cm; jecha remudune pakadzika kwe1.5 m rinogona kuverenga pamusoro pe20,000 Ω·cm kana zvakaipisisa. Chikonzero chacho ionic, kwete mechanical: jecha rakaoma harina ivhu uye harina zvicherwa zvakanyungudutswa zvinoita kuti magetsi aendeswe kure nepamusoro petsvimbo.
Chinochinja kuverenga uku hunyoro huri pamusoro petsvimbo. A tsvimbo yepasi yemakemikariivhu rakaputirwa nemhangura mukati me100 mm augered annulus, ine annulus yakazadzwa ne hygroscopic backfill compound (kazhinji bentonite inosanganiswa ne magnesium sulfate). Musanganiswa uyu unotora hunyoro hwemhepo kubva muvhu uye kubva muhunyoro hwemwaka, unohubata pamusoro petsvimbo, uye unoburitsa zvishoma nezvishoma ionic content muvhu chairo. Mugumisiro wacho ndewekuti nzvimbo inopindirana netsvimbo nevhu inoita sevhu re 200 Ω·cm kunyangwe kana ivhu rakapoteredza richiverenga 8,000 Ω·cm. Iyo NEMA GR-1 rod geometry haina kuchinja; chinochinja ndechekusangana kwevhu.
Pakutumira kwedu kuMiddle East pakati pa2020 na2025, avhareji yekudzivirira mapedhi pakuiswa kwetsvimbo dzemakemikari mujecha re2,000 kusvika 8,000 Ω·cm yakasvika pa3.6 Ω ichipesana nechinangwa che5 Ω, pasina kutenderera kwekudiridza. Kuiswa kwetsvimbo dzinofambiswa chete panzvimbo dziri pedyo mubhendi rimwe chete kwaive pakati pe18 ne42 Ω panguva yekuiswa, uye kwakadzoserwa mukati megore rekutanga. Tsvimbo yaive nedhayamita imwechete. Musiyano waiva wekudzosera shure.
2. Ivhu Rematombo — Bottleneck yeCaliche-Layer
Nzvimbo yeSaudi yakaburitsa data remunda munyaya ino yaive ne caliche layer pa 3.5 m pakona ye southeast array. Spec yekutanga yaida 2.4 m drived rods - iyo yaishanda pa 94% ye array. 6% yasara yakagara pa caliche isina kudzika zvakanyanya kuti ipfuure uye yairamba zvakanyanya kuti isatariswe. Ma pads matanhatu mukona iyoyo aive pamusoro pe 4.7 Ω pakuiswa kwesimba kunyangwe tsvimbo yakawedzerwa kusvika 3.0 m. Takaita zvinhu zviviri: takachinja kuita delta-pattern doubled electrodes (ma rods maviri e 2.4 m mu triangle yakatenderedza pad yega yega) uye takawedzera.mamodule epasi egirafiti yekoramupaMV transformer pads panguva imwe chete. Kudzokorora kwekuyedza kwegore rechishanu kwakadzoka pa4.7 Ω zvakanyanya — mukati memuganhu wekugadzira — nekuti mamodules akawedzera nzvimbo ye equipotential kurutivi uko nzira yakatwasuka yakanga yakavharwa.
Nzvimbo dzine matombo dzinowira muzvikamu zviviri zvinoshanda zvechikwata chekutenga. Chekutanga idombo rakatyoka rine mipata yakazara nevhu - inokwanisika, asi tsvimbo inongobata chikamu chevhu chete, kwete matrix yedombo. Chechipiri idombo risina kukanganiswa kana kuti caliche (ivhu rakaiswa simende necalcium carbonate) pakadzika kweelectrode kwakarongwa kana pedyo, uko kutyaira kunova kusingabviri kana kusina mari. Middle East nekumadokero kweUS vanoona chikamu chikuru chechipiri; nzvimbo huru dzeSaudi Arabia, Qatar neUAE dzine caliche layer iri pakati pe2 ne4 m, uyeRuzivo rweIvhu reNyika reISRICKatalogu inoisa chimiro chimwe chete muSahel neHorn of Africa munzvimbo dzisina mvura yakawanda panguva yemwaka.
Kuti muwane mubvunzo wakadzama wekutenga zvinhu panzvimbo dzisina matombo,Nzvimbo yedata rekupatsanura ivhu reFAOinobvumira timu yekutenga kutenga kuti iongorore ivhu redunhu vasati vatanga kugadzira kontrakita we geotech — nzvimbo yakachipa yekuziva kana nzvimbo yacho iri pa caliche kana kuti pasi pe granite yakakuvara.Gwaro rekutarisa reFAO World Soilsndiyo nzvimbo inonongedzera mazita emhando yevhu anozopedzisira ari paBES (Bid Evaluation Sheet).
3. Ivhu reLaterite — Dambudziko reKutenderera Kwemwaka
Laterite ivhu remhando yevhu apo tsvimbo inofambiswa nemhepo inoyerera ichitanga kushanda uye yozotadza kushanda zvakanaka panguva yekusanaya kwemvura. Laterite ivhu rakasara rine iron nearuminiyamu rinowanikwa munzvimbo dzinopisa dzemuAfrica (Nigeria, Ghana, Kenya, Mozambique), South Asia (nzvimbo zhinji dzeIndia, Sri Lanka, Bangladesh) nedzimwe nzvimbo dzeSouth America (Brazilian kuchamhembe kwakadziva kumabvazuva, Guyana). Ivhu racho rakanyatsobuda mvura uye rine iron oxide yakawanda, izvo zvinoita kuti rive neruvara rutsvuku-ruvara rwebrown.
Dambudziko remagetsi nderekuchinja kwemwaka. Ongororo dzakaburitswa paWest Africa laterite dzinowanzo taura nezvekudzivirira kwemvura munguva yemvura pakati pe200 ne800 Ω·cm — zvinonyatso shanda patsvimbo inofambiswa — uye kudzivirira kwemvura munguva yechando pamusoro pe5,000 Ω·cm — kunze kwenzvimbo inogona kushandira tsvimbo imwe chete. Tsvimbo inofambiswa haichinji; ivhu rakaipoteredza rinochinja. Kudiridza kwemwedzi mitanhatu kunogona kugadzirisa kuverenga kwemvura munguva yechando, asi dambudziko rimwe chete rekudiridza rinoonekwazve: vashandi vekudiridza vasingauye panguva yakakodzera vanosiya pad mukati mebhandi rekutadza kwewindo rekubata-voltage kwemwaka wese wechando.
Kune nzvimbo dzeSEA laterite, pfungwa imwechete yemwaka inoshanda nenguva yemwaka yakasiyana zvishoma: mwaka wekusanaya kwemvura muIndonesia nePhilippines mupfupi asi wakanyanya kupfuura mwaka wekusanaya kwemvura wekuWest Africa, zvinoreva kuti kusanaya kwemvura kunomanikidzwa kuita hwindo rakasimba. Muenzaniso wekushandisa makemikari-rod-earth-rod — inochengetedza hunyoro, isina kutenderera kwekudiridza — unoshanda mune zvese zviri zviviri.
4. Zvinotaurwa neGwaro reKutenga
Mumarudzi matatu evhu ari pamusoro apa, sarudzo yeinjiniya yakafanana: tsvimbo inofambiswa nemhepo yakajairika haisiyo chigadzirwa chakakodzera. Gwaro rekutenga rinofanira kuratidza kuti chii chiripo.
| Rudzi rwevhu | Tsvimbo inofambiswa yakajairika yega | Zvinodiwa nechinhu ichocho |
|---|---|---|
| Jecha, 3,000 kusvika 10,000 Ω·cm | Kutadza kushanda (18-42 Ω panzvimbo dziri pedyo) | Tsvimbo yepasi yemakemikariine hygroscopic backfill paIEC 62561-7; chinangwa chepad chiri pasi pe5 Ω; mushumo wekuongorora rudzi rwe backfill wakabatanidzwa. |
| Rocky, caliche pa 2-3 m | Haikwanise kusvika pakadzika (4.7 Ω yakanyanya kuipa pakona yeSaudi SW) | Maerekitironi maviri akapetwa kaviri edelta-pattern, akatwasukamamodule epasi, kana musanganiswa wekemikari-tsvimbo yevhu + module yevhu;IEEE 837chinobatanidza; kudzika kwecaliche kwakanyorwa muchinhu chakagadzirwa. |
| Laterite, 200-5,000 Ω·cm kutenderera kwemwaka | Inonyorova, yotadza kuoma | Tsvimbo yepasi yemakemikari (kanatsvimbo yepasi ye electrolytic ionyeMV pads uye ESE terminations) ine hygroscopic backfill chemistry yakafanana; O&M plan isina kutenderera kwekudiridza. |
Zvinhu zvitatu zvinodzora kutenga zvinhu zvinoita mutsauko pakati pechinhu chinogadzirisa dambudziko nechinhu chinokonzera dambudziko.
- Mushumo wemhando yebvunzo wakabatana nePO.Tsvimbo yevhu yemakemikari haisi chubhu yemhangura chete - asi makemikari ari mukati mayo. Mutengesi anofanira kutumira mushumo wemhando ina wekuyedza: resistivity reduction factor pa reference humidity, long-term ionic stability pa60 °C / 30 days, hunyoro hunoramba huripo pa90-day dry-down, uye ESIA-stage environmental compliance. Takarasikirwa ne2019 batch nekuda kwe sodium-chloride blend (chloride inorwisa copper-clad cores mukati me sheath), uye 2022 supplier batch yedu yakakundikana ionic-stability test pa65% retention - pasi pe internal 80% threshold yedu - ndosaka takakwanisa kuwana compounding line mukati meimba. Mutengesi asingakwanise kutumira mushumo uyu ndiye mutengesi anouya pakupera kwegore rechipiri ne email yekuti "tine compound itsva yakagadziridzwa".
- Chinongedzo chakakiyiwa paIEEE 837.Ma clamp emakanika anokundikana bvunzo ye impulse-current muIEC 62561-1uye haifanirwe kushandiswa papurojekiti yehukuru hwese. Muyero wekubatanidza ndiwo chikamu chechinhu chinodzivirira chinhu ichi muhupenyu hwese hwekugadzira kwemakore makumi maviri nemashanu.
- Rod geometry paNEMA GR-1.Dhayamita 17.2 mm kusvika 25.4 mm, ukobvu hwesimbi-yemhangura ≥ 254 µm. Ukobvu hwesimbi hunonyanya kukosha pamitoro yemagetsi inofambiswa (ESE terminations, MV pads) — simbi yakatetepa inokundikana kutanga.
5. Kupedzisa — Zvinofanira Kubvunzwa Nedivi Rekutenga
Chivako cheSaudi che150 MW chakavhura chinyorwa chino chakadzoka pa3.1 Ω avhareji yekudzivirira mapad vachipesana ne5 Ω dhizaini pakuyedzwazve kwegore rechishanu, nepad yakaipisisa pa4.7 Ω mukona yekumaodzanyemba kwakadziva kumadokero uko caliche yakamisa kutyaira kwakamira. Hapana kana imwe yenhamba idzodzo yaivepo senharo yekutenga apo Madrid EPC yakatumira email yekubvunza yaNyamavhuvhu 2020 - imhedzisiro yekunyora backfill chemistry, connector standard, rod geometry uye soil-target resequencing mugwaro rimwe chete, uye wobva warega vashandi vekuisa vachiita basa.
Kana uri muridzi wepurojekiti kuMiddle East, Africa kana Southeast Asia uye gwaro rekutenga rakazaruka, mubvunzo unosarudza kana chirongwa ichi chikaramba chiri mukati mehwindo rayo rekugadzira kwemakore makumi maviri nemashanu anotevera hausi wekuti "ndichatenga tsvimbo ipi" - asi "chii chinodzivirira ivhu pakadzika kweelectrode kwakarongwa, uye ndeipi yenzira nhatu dzekukundikana dziri pamusoro dzinoshanda." Wana mhinduro yevhu kutanga; mhinduro yechigadzirwa inotevera. Mubvunzo wekutenga ndewekuti ndeipi yemhuri mbiri dzechigadzirwa -tsvimbo yepasi yemakemikari or module yevhu yekoramu yegirafiti(kana zvese zviri zviviri, panzvimbo dzakaoma) — inokodzera bhendi revhu uye muganho wekudzika. Peji rakazara rechikamu pa/makemikari-ekumisa-electrode/ine sarudzo dzejometri, uyeVagadziri veRodhi dzeGround Rod dzeElectrolytic Ion dzepamusoro shanu dzegore ra2025Blog rine runyorwa rwevatengesi.
Pamushonga wemuenzaniso uye mushumo webvunzo wemhando ina dzezvivakwa papurojekiti chaiyo, nzira inokurumidza ndiyopeji rekutaurirana nesuMienzaniso yekutumira mapurojekiti eME, Africa neSEA inowanzobuda mufekitori mukati mevhiki imwe chete, uye mhinduro dzehunyanzvi mukati mezuva rimwe chete rekushanda.
Nguva yekutumira: Gumiguru-05-2026