Control Panel mu Wind Turbine ndi Momwe Imagwirira Ntchito
Turbine ya mphepo ndi njira yopangira mphamvu yomwe imawoneka yosavuta kuchokera kunja—ma propeller amazungulira, ndipo magetsi amapangidwa. Komabe, kumbuyo kwa njirayi kuli "ubongo" womwe umaonetsetsa kuti chilichonse chikuyenda bwino, mokhazikika, komanso moyenera: gulu lowongolera. Gulu lowongolera pa turbine ya mphepo limayang'anira momwe turbine ilili, limawongolera momwe imagwirira ntchito, limateteza zigawo kuti zisawonongeke, komanso limalumikizana ndi makina owunikira akutali. Nkhaniyi ikufotokoza za gulu lowongolera turbine ya mphepo, zigawo zake zazikulu, ndi momwe limagwirira ntchito pansi pa mikhalidwe yosiyanasiyana ya mphepo.
1. Kodi gulu lowongolera la turbine ya mphepo ndi chiyani?
Gulu lowongolera ma turbine a mphepo ndi zida zamagetsi zosiyanasiyana—nthawi zambiri zimayikidwa mkati mwa nacelle (nyumba ya injini pamwamba pa nsanja) ndi/kapena pansi pa nsanja—zomwe zimawongolera njira zonse zogwirira ntchito za turbine. Gululi limagwira ntchito zokha monga kuyambitsa/kuimitsa, kusintha momwe turbine imayendera kuti igwirizane ndi mphepo, kuwongolera liwiro la kuzungulira kwa rotor, ndikuwonetsetsa kuti mphamvu yamagetsi yopangidwa ikukwaniritsa miyezo ya gridi.
Ma panelo owongolera amakono nthawi zambiri amalumikizidwa ndi PLC (Programmable Logic Controller) kapena makina owongolera makompyuta a mafakitale, okhala ndi masensa, ma actuator, chitetezo chamagetsi, ndi mizere yolumikizirana deta. Popanda panelo yowongolera, turbine ikhoza kuthamangitsidwa ndi liwiro lopitirira muyeso, magetsi osakhazikika/ma frequency, komanso chiopsezo cha kuwonongeka kwa makina ku bokosi la gearbox ndi jenereta.
2. Ntchito zazikulu za gulu lowongolera
Kawirikawiri, gulu lowongolera la turbine ya mphepo limagwira ntchito zingapo zofunika:
1. Kuwunika
Imasonkhanitsa deta kuchokera ku masensa: liwiro la mphepo, komwe mphepo ikupita, kutentha, kugwedezeka, liwiro la rotor, voltage, current, ndi momwe zinthu zilili.
2. Kulamulira
Dziwani zochita zokha: nthawi imene turbine imayamba kuzungulira ndikupanga magetsi, nthawi yoti iyime, komanso momwe mungasungire kuzungulira kwa rotor pamalo otetezeka.
3. Chitetezo
Imasiya kugwira ntchito ngati pali zinthu zoopsa monga kupitirira muyeso wa magetsi, kupitirira muyeso wa magetsi, kutentha kwambiri, kugwedezeka kosazolowereka, kuthamanga kwambiri, kapena kulephera kwa dongosolo la pitch/yaw.
4. Kulumikizana kwa gridi (kutsata gridi)
Sinthani kusinthasintha ndi khalidwe la mphamvu kuti zikwaniritse zofunikira pa gridi (mafupipafupi, magetsi, mphamvu, ndi kuthekera koyenda modutsa panthawi yamavuto).
5. Kulankhulana ndi kulemba deta
Tumizani deta ku malo owongolera (SCADA), mbiri ya ma alamu a sitolo, zochitika, ndi magwiridwe antchito kuti muwunikenso kukonza.
3. Zigawo za gulu lowongolera
Ngakhale kapangidwe ka wopanga aliyense kamasiyana, mapanelo owongolera ma turbine amphepo nthawi zambiri amakhala ndi:
a) PLC kapena wolamulira wamkulu
PLC ndi malo olumikizirana omwe amalandira deta ya masensa ndikuyendetsa ma actuator. PLC imagwiritsa ntchito ma algorithms owongolera kutengera magawo okonzedwa, kuphatikiza mfundo zachitetezo.
b) HMI (Chiyankhulo cha Makina a Anthu)
HMI ndi sikirini/terminal yomwe imalola akatswiri kuwona momwe turbine ilili, ma alarm, ndikuchita zokonzera ndi kuzindikira matenda. Pa ma turbine akuluakulu, HMI nthawi zambiri imalumikizidwa ku dongosolo la SCADA.
c) Chosinthira mphamvu/chosinthira mphamvu
Ma turbine ambiri amakono amagwiritsa ntchito chosinthira mphamvu (rectifier–DC link–inverter) kuti asinthe magetsi kuchokera ku jenereta kupita ku mphamvu yogwirizana ndi gridi. Gawoli limalumikizidwa kwambiri ndi kayendedwe ka ma frequency, voltage, ndi mphamvu.
d) Zosensa zofunika
Masensa ena odziwika bwino:
- Anemometer (liwiro la mphepo) ndi vene ya mphepo (njira ya mphepo)
- Chojambulira liwiro la rotor (RPM)
- Gearbox, bearing, jenereta, zomverera kutentha kwa converter
- Sensa yogwedera kuti izindikire kuwonongeka koyambirira
- Zosensa zamagetsi ndi zamagetsi zowunikira magetsi
- Malire ma switch ndi ma encoder a malo otsetsereka ndi kugwedezeka
e) Njira yowongolera ma phula
Kuwongolera ma phula kumawongolera ngodya ya masamba poyerekeza ndi mphepo. Nthawi zambiri imagwiritsa ntchito mota yamagetsi kapena makina a hydraulic. Kuwongolera ma phula ndikofunikira kwambiri kuti magetsi azigwira ntchito bwino komanso kupewa kuthamanga kwambiri pakagwa mphepo yamphamvu.
f) Njira yowongolera kuyamwa
Kuwongolera kwa yaw kumazungulira nacelle kotero kuti rotor iyang'ane ndi mphepo. Chowongoleracho chimakonza mota ya yaw kutengera deta yochokera ku vene ya mphepo, pomwe chimaletsa kusaka kwambiri kwa yaw, komwe kungayambitse kuwonongeka.
g) Chitetezo ndi chitetezo cha magetsi
Izi zikuphatikizapo ma MCB/MCCB, ma protective relays, ma contactor, ma SPD (kuteteza kugwedezeka), kukhazikika pansi, ndi machitidwe oyimitsa mwadzidzidzi. Ma turbine ambiri ali ndi njira yofunikira yotetezera ntchito zofunika kwambiri.
h) Makina odzola ndi oziziritsira
Chowongolera chimayang'anira pampu yothira mafuta ya gearbox, fan yoziziritsira, ndi makina otenthetsera kuti zinthuzo zizikhala pamalo abwino ogwirira ntchito, makamaka m'malo ozizira/onyowa.
4. Momwe gulu lowongolera limagwirira ntchito mu kayendedwe ka ntchito ya turbine
a) Mikhalidwe yoyimirira ndi kuyang'ana koyamba
Ngati turbine sikugwira ntchito, gulu lowongolera limakhala mu mode yoyimirira. Limayang'anira nthawi zonse:
– liwiro la mphepo (lafika pa liwiro lomaliza),
- momwe dongosolo lamagetsi lilili,
- kutentha ndi kuthamanga kwa mafuta,
- mikhalidwe yolumikizirana ndi masensa.
Asanayambe, gulu lowongolera limadziyesa lokha. Ngati magawo onse ali otetezeka, turbine imaloledwa kugwira ntchito.
b) Kuyambitsa: kuyambira mphepo mpaka kuzungulira kwa rotor
Liwiro la mphepo likadutsa liwiro lodulidwa (monga 3–4 m/s, kutengera kapangidwe kake), gulu lowongolera limayambitsa njira yoyambira:
1. Dongosolo la yaw limasintha njira ya nacelle kuti iyang'ane ndi mphepo.
2. Ngodya ya tsamba imayikidwa pamalo omwe amapanga mphamvu yoyambira.
3. Rotor imayamba kuzungulira; sensa ya RPM imatsimikizira kufulumira.
4. Jenereta ndi chosinthira magetsi zimayamba kulamulira kupanga magetsi.
Pa ma turbine okhala ndi ma converter, gulu lowongolera limaonetsetsa kuti magetsi a DC link ndi okhazikika ndipo inverter ili yokonzeka kupereka mphamvu ku gridi.
c) Kugwira ntchito kwabwinobwino: kukonza mphamvu ndi kukhazikika
Pa mphepo yamphamvu, cholinga chowongolera ndi kukulitsa mphamvu pamene ikusunga mphamvu ya makina. Gulu lowongolera lidzachita izi:
- Sinthani mtunda kuti musunge kuzungulira kwabwino kwa rotor,
- wongolerani chosinthira kuti zotuluka zigwirizane ndi miyezo ya gridi,
- yang'anirani kugwedezeka ndi kutentha,
- sinthani kuyabwa nthawi ndi nthawi pamene mphepo ikusintha.
Mu gawo ili, dongosololi nthawi zambiri limagwiritsa ntchito njira monga Maximum Power Point Tracking (MPPT) (makamaka pa ma turbine osinthasintha liwiro) kuti liwongolere kuyamwa kwa mphamvu kuchokera ku mphepo.
d) Mphepo yamphamvu: kuchepetsa mphamvu
Mphepo ikafika pa liwiro la mphepo lovomerezeka, turbine imakhala itafika pa mphamvu yake yovomerezeka. Pofuna kupewa mphamvu yoposa mphamvu ya jenereta ndi kapangidwe ka makina, gulu lowongolera limachita phokoso, kutembenuza masamba pang'ono "kutali" ndi mphepo, kuchepetsa mphamvu. Mwanjira iyi:
- mphamvu imakhala pafupi ndi mtengo wololedwa,
- liwiro la rotor silikudumpha,
- zigawo zake zimakhalabe zotetezeka.
e) Kutseka: nyengo zoopsa kapena mphepo yamphamvu kwambiri
Ngati mphepo yadutsa liwiro lodulidwa (monga pafupifupi 25 m/s) kapena ngati pali vuto linalake (kutentha kwambiri, kuthamanga kwambiri, kugwedezeka kwambiri), gulu lowongolera limatseka lokha:
1. Kupindika kwa tsamba kumalunjika pamalo a "nthenga" (ngodya yomwe imachepetsa mphamvu ya mphepo).
2. Buleki yamakina ikhoza kuyatsidwa malinga ndi njira yogwiritsira ntchito.
3. Chosinthira chimachotsa bwino magetsi opita ku gridi.
4. Ma alamu amajambulidwa ndikutumizidwa ku SCADA.
5. Turbine imalowa mu safe mode mpaka itabwerera mwakale kapena katswiri akachita reset.
Njira yozimitsa iyi idapangidwa kuti ichitike pang'onopang'ono kuti isachititse kugwedezeka komwe kungawononge bokosi la gearbox ndi kapangidwe ka nsanja.
5. Kuphatikiza gulu lowongolera ndi SCADA ndi kukonza
Ma panelo owongolera ma turbine a mphepo nthawi zambiri amalumikizidwa ku SCADA (Supervisory Control and Data Acquisition). Kudzera mu SCADA, ogwiritsa ntchito amatha:
- Onani kupanga mphamvu nthawi yeniyeni,
- yang'anirani momwe turbine iliyonse ilili mu famu ya mphepo,
- kulandira ma alamu odziyimira pawokha,
- kukonza nthawi kutengera deta ya momwe zinthu zilili (kuyang'anira momwe zinthu zilili).
Deta yomwe yasonkhanitsidwa ndi gulu lowongolera ndi yothandiza kwambiri pakukonza zinthu moganizira, mwachitsanzo kuzindikira zizindikiro za kuwonongeka kwa mabenchi chifukwa cha kugwedezeka, kapena mavuto ozizira chifukwa cha kutentha komwe kukukwera.
6. Mavuto ndi mbali za chitetezo
Mapanelo owongolera ayenera kugwira ntchito m'malo ovuta kwambiri: kugwedezeka, kusintha kwa kutentha, chinyezi, ndi kugunda kwa mphezi. Chifukwa chake, kapangidwe kake kamatsimikizira:
- chitetezo chabwino cha mafunde ndi nthaka,
- kuchulukirachulukira kwa masensa/ma actuator ofunikira,
- mfundo yotetezeka (ngati kulamulira kwalephera, turbine imalowa mu njira yotetezeka),
- miyezo ya chitetezo cha mafakitale ndi kutsata malamulo a gridi.
Cholakwika chaching'ono pakuwongolera ma phula kapena chitetezo cha liwiro lopitirira muyeso chingakhale ndi vuto lalikulu, kotero mapanelo owongolera nthawi zonse amakhala ndi njira zingapo zotetezera.
7. Kesimpulan
Chowongolera ndi gawo lofunika kwambiri lomwe limalola kuti chowongolera cha mphepo chizigwira ntchito zokha, moyenera, komanso motetezeka. Mwa kuphatikiza deta ya sensor, PLC, makina oyendera ndi kuyendayenda, chosinthira mphamvu, ndi chitetezo chamagetsi, chowongolera chimayang'anira moyo wonse wa chowongolera: kuyambira nthawi yoyimirira, kuyambitsa, kugwira ntchito kwabwinobwino, kuchepetsa mphamvu panthawi ya mphepo yamphamvu, ndi kuzimitsa m'malo oopsa. Kuphatikiza kwake ndi SCADA kumathandizanso kuyang'anira patali ndi kukonza zinthu zodziwikiratu, kuonetsetsa kuti chowongolera cha mphepo chimapanga mphamvu zoyera nthawi zonse.
Ngati mukufuna, nditha kuwonjezera tchati cha momwe gulu lowongolera limagwirira ntchito, kapena kufotokozera kusiyana pakati pa ma panelo owongolera pa ma turbine othamanga mokhazikika ndi ma turbine othamanga mosinthasintha.
