Darajar Ƙarfin Wutar Rana da Samarwa Mai Canzawa: Hanyoyi, Ma'auni, da Tasirin Kasuwa

1. Gabatarwa

Wannan takarda ta zama rahoton ƙarshe na Ƙungiyar Aiki ta IEEE PES kan Darajar Ƙarfin Wutar Rana. Tana ba da cikakken bincike mai mahimmanci na hanyoyin da ake amfani da su don tantance gudunmawar wutar rana da sauran Albarkatun Samarwa Masu Canzawa (VG) ga amincin tsarin wutar lantarki. Babban ƙalubalen da aka magance shi ne ƙididdige yawan "ƙarfi" da albarkatu mai canzawa kamar wutar rana zai iya samarwa a lokutan buƙatu mafi girma, ma'auni da aka sani da darajar ƙarfinsa ko ƙimar ƙarfinsa.

Aikin ya ginu akan rahoton ƙungiyar aiki da ta gabata kan wutar iska amma ya ba da fifiko na musamman ga halayen musamman na PV na rana, kamar tsarinsa mai ƙarfi na yini/lokacin shekara da haɗin kai na sarari. Yana bita sosai hanyoyin ƙira, tushen ƙididdiga, da haɗa VG cikin hanyoyin kasuwannin ƙarfi.

2. Tantance Albarkatun PV

Samarwar hasken rana na photovoltaic (PV) yana motsa shi ne ta hanyar hasken rana na saman, wanda ke nuna zagayowar da za a iya hasasawa amma yana da rikitarwa saboda bambancin yanayin sama kamar rufe gajimare. Matsala mai mahimmanci ita ce ƙarancin bayanan samarwa na dogon lokaci, masu inganci, wanda ke tilasta dogaro da bayanan da aka ƙirƙira. Sashen yana tattauna muhimmancin kama daidai:

Tsarin Yini & Lokacin Shekara: Zagayowar yini da shekara na samuwar hasken rana.
Haɗin Kai na Sarari & Lokaci: Yadda fitowar hasken rana ke haɗuwa a wurare daban-daban da lokuta, yana shafar ƙimar tarin fayil.
Fasaha & Abubuwan Ƙira: Tasirin daidaitawar panel, tsarin bin rana, da bambancin asali tsakanin PV da Wutar Rana Mai Maida Hankali (CSP) tare da ajiyar zafi.

3. Hanyoyin Ƙididdiga don Isasshen Ƙarfi da Darajar Ƙarfi

Wannan sashe ya zama tushen hanyar takardar, yana ba da cikakkun bayanai game da kayan aikin ƙididdiga da ƙididdiga da ake amfani da su don tantance isasshen ƙarfi.

3.1. Tushen Yiwuwa

Tushen ya ta'allaka ne akan tantance isasshen albarkatu na ƙididdiga, wanda ke kimanta haɗarin rashin isasshen samarwa don biyan buƙatu (Asarar Lodi). Muhimman ra'ayoyin sun haɗa da Tsammanin Asarar Lodi (LOLE) da Tsammanin Makamashin da ba a biya ba (EUE).

3.2. Hanyoyin Ƙididdiga na Ƙididdiga

Ganin ƙarancin bayanai, hanyoyin ƙididdiga masu ƙarfi suna da mahimmanci. Takardar tana bincika hanyoyin ƙirar rarraba haɗin gwiwar fitowar VG da buƙatun tsarin, yana nuna sakamakon ƙarancin bayanai da buƙatar kama dogaro na wutsiya (abubuwan da suka faru na ƙananan fitarwa/manyan buƙatu).

3.3. Ma'aunin Darajar Ƙarfi

An tattauna manyan ma'auni guda biyu:

Ƙarfin ɗaukar Lodi Mai Tasiri (ELCC): Adadin ƙarin lodi mai dorewa da tsarin zai iya biyayya yayin da yake kiyaye ma'aunin haɗari iri ɗaya (misali, LOLE) bayan ƙara albarkatun VG. Ana ɗaukar wannan a matsayin mafi ingantacciyar hanya.
Ƙarfin Kamfani Mai Ƙarfi (EFC) / Ƙimar Ƙarfi: Sau da yawa ana bayyana shi azaman kashi na ƙarfin ƙarfin VG. Mai sauƙi amma ba daidai ba kamar ELCC.

Lissafin sau da yawa ya ƙunshi "gwajin amincin" kamar wanda Hukumar Amincin Lantarki ta Arewacin Amurka (NERC) ke amfani da shi.

3.4. Haɗa VG a cikin Kasuwannin Ƙarfi

Takardar ta magance ƙalubalen aiki na haɗa VG cikin kasuwannin ƙarfi, waɗanda aka ƙera don siyan ƙarfi mai ƙarfi. Muhimman batutuwa sun haɗa da:

Ƙayyade ƙimar rage ƙima ga albarkatun VG.
Sarrafa tasirin VG akan farashin kasuwa da isassun kudaden shiga ga sauran albarkatu.
Ƙirar dokokin kasuwa waɗanda ke nuna daidai ƙimar VG mai canzawa da dogaro da yanayi.

3.5. Haɗin Kai tare da Ajiyar Makamashi

Tattaunawa ta taƙaitacce ta lura cewa ajiyar da aka haɗa (kamar yadda yake a cikin CSP ko tsarin PV+baturi) na iya canza darajar ƙarfi ta hanyar matsar da fitarwa don daidaitawa da lokutan buƙatu mafi girma.

4. Binciken Nazarin Aiki & Aiki

Takardar ta sake duba binciken masana'antu da na ilimi na baya-bayan nan kan darajar ƙarfin wutar rana. Sakamakon ya nuna bambanci mai yawa a cikin ƙimar da aka lissafta (sau da yawa tsakanin 10-50% na ƙarfin ƙarfi) dangane da:

Wuri: Ingancin albarkatun rana da haɗin kai tare da tsarin buƙatu na gida.
Matsayin Shiga: Darajar ƙarfi yawanci tana raguwa yayin da shigar wutar rana ke ƙaruwa saboda tasirin jikewa.
Hanyar da aka Yi amfani da ita: Nazarin da ke amfani da ELCC gabaɗaya suna ba da rahoton ƙananan ƙima fiye da waɗanda ke amfani da ma'auni masu sauƙi.
Sassauƙan Tsarin: Kasancewar albarkatun da ke tashi da sauri ko amsawar bangaren buƙatu na iya haɓaka darajar ƙarfin wutar rana.

5. Ƙarshe & Bukatun Bincike

Takardar ta ƙarasa da cewa tantance daidai darajar ƙarfin wutar rana yana buƙatar ƙirar ƙididdiga mai zurfi wanda ke ɗaukar rikitattun alaƙar lokaci tsakanin fitowar VG da buƙatu. Manyan gibin binciken da aka gano sun haɗa da:

Ingantaccen ƙirar dogon lokaci na albarkatu da dogaro da buƙatu tare da ƙarancin bayanai.
Haɓaka hanyoyin daidaitattun, masu bayyana don amfani a kasuwannin ƙarfi.
Mafi kyawun fahimtar ƙimar fayilolin rana masu bambanta a yanki.
Haɗa tasirin canjin yanayi akan tsarin albarkatun rana na dogon lokaci.

6. Bincike na Asali & Sharhin Kwararru

Hangen Nesa na Manazarcin: Rarraba Ƙimar Rashin Tsayawa

Fahimta ta Asali: Wannan rahoton IEEE ba kawai littafin fasaha ba ne; shi ne yarda cewa tsarinmu na gargajiya, ƙayyadaddun tsarin tsara layin wutar lantarki ya karye gaba ɗaya a fuskar makamashi mai sabuntawa. Labarin na gaske a nan shine canjin masana'antu mai raɗaɗi amma dole daga kimanta "ƙarfi" a matsayin kadara ta zahiri zuwa kimanta "gudunmawar amincin ƙididdiga". Mai da hankali sosai na takardar akan hanyoyin ƙididdiga kamar ELCC ya bayyana gaskiya mai mahimmanci: megawatt na wutar rana ba a halarta daidai. Ƙimarsa gaba ɗaya tana dogara ne akan lokacin da inda ya samar, yana buƙatar bincike mai zurfi wanda yawancin tsarin kasuwa na yanzu ba su da kayan aiki don sarrafa shi.

Kwararar Hankali & Gibi Mai Mahimmanci: Rahoton yana ci gaba da hankali daga tantance albarkatu zuwa ƙirar ƙididdiga zuwa tasirin kasuwa. Duk da haka, ya bayyana gibin aiki mai haske. Yayin da ya yi fice a cikin cikakkun bayanai yadda ake lissafin darajar ƙarfi, ya rage yin "yanzu menene?" ga masu sarrafa tsarin. Sanin cewa ELCC na wutar rana ya kai 25% a rana mai zafi na rani abu ɗaya ne; samun tsarin sarrafawa na ainihi, siginonin kasuwa, da albarkatu masu sassauƙa don amfani da wannan takamaiman 25% wani abu ne. Wannan yana maimaita ƙalubalen da aka gani a wasu fagage da ke amfani da ƙirar rikitarwa ga tsarin duniya, kamar wahalhalun da ke cikin fassarar ƙirar AI masu samarwa masu inganci (kamar waɗanda aka tattauna a cikin takardar CycleGAN ta Zhu et al. akan fassarar hoto zuwa hoto mara haɗin gwiwa) cikin ingantattun aikace-aikacen samarwa ba tare da manyan shingen injiniya ba.

Ƙarfi & Kurakurai: Ƙarfin rahoton shine ƙwararrun fasaharsa marar karkata da kuma rarrabe tsakanin hanyoyin daidai (ELCC) da gajerun hanyoyin da suka dace amma suna da kurakurai (ƙimar ƙarfi mai sauƙi). Kuskuren sa, gama gari ga yawancin bita na ilimi, ɗan rabuwa ne daga tattalin arzikin aiwatarwa. Ya ambaci kasuwannin ƙarfi amma bai cika fuskantar tashin hankalin siyasa da na tsari da ke hana amfani da waɗannan hanyoyin masu zurfi ba. Kamar yadda Hukumar Makamashi ta Duniya (IEA) ta lura a cikin rahotonsu na "Tsarin Wutar Lantarki a Canji", gyaran ƙirar kasuwa sau da yawa shine toshewar farko, ba fahimtar fasaha ba.

Fahimta Mai Aiki: Ga masu amfani da wutar lantarki da masu tsari, abin da za a ɗauka yana da gaggawa: daina amfani da ƙimar rage ƙima. Gwada tantancewar tushen ELCC don fayilolin wutar rana nan take. Ga masu samar da fasaha, damar ta ta'allaka ne a haɓaka software da dandamali na nazari waɗanda za su iya aiwatar da waɗannan rikitattun lissafin aminci na musamman a wuri a sikeli, watakila suna amfani da dabarun ƙididdiga na sarari da koyon inji don ingantaccen ƙirar albarkatu na dogon lokaci. Tsarin wutar lantarki na gaba za a sarrafa shi ta hanyar algorithms waɗanda suka fahimci rarraba yiwuwa, ba kawai jimillar megawatt ba, kuma wannan rahoton yana ba da littafin wasan ƙididdiga na musamman don wannan canji.

7. Cikakkun Bayanai na Fasaha & Tsarin Lissafi

Tushen ƙimar ƙarfi yana cikin ma'aunin amincin ƙididdiga. Tsammanin Asarar Lodi (LOLE) an bayyana shi azaman adadin kwanakin (ko sa'o'i) da ake tsammani a kowane lokaci inda buƙatu ta wuce ƙarfin da ake da shi:

$\text{LOLE} = E\left[ \sum_{t} I\left( D_t > C_t^{total} \right) \right]$

inda $D_t$ shine buƙatu a lokacin $t$, $C_t^{total}$ shine jimillar ƙarfin da ake da shi, kuma $I(\cdot)$ shine aikin nuna alama.

Ana samun Ƙarfin ɗaukar Lodi Mai Tasiri (ELCC) na tashar wutar rana ta hanyar warware ƙarin lodi mai dorewa $L_{add}$ wanda ya daidaita LOLE kafin da bayan ƙararsa:

$\text{LOLE}_{\text{tsarin asali}}(L) = \text{LOLE}_{\text{tsarin + rana}}(L + L_{add})$

ELCC shine $L_{add}$. Wannan yana buƙatar ƙirar jerin lokaci na samar da wutar rana $G_t^{solar}$ a matsayin tsari mai yuwuwa, sau da yawa yana la'akari da haɗin kai da $D_t$.

Kalubalen Ƙididdiga Mai Mahimmanci: Ƙirar rarraba haɗin gwiwa $P(D_t, G_t^{solar})$, musamman wutsiyarsa (watau yuwuwar babban buƙatu da ya zo daidai da ƙarancin fitar wutar rana). Za a iya amfani da ayyukan Copula ko ƙirar jerin lokaci masu ci gaba (misali, VAR, GARCH), kamar yadda aka ambata a cikin wallafe-wallafen haɗarin kuɗi da yanayi.

8. Tsarin Bincike: Misalin Nazarin Hali

Yanayi: Tantance darajar ƙarfin tashar PV mai 100 MW a cikin tsarin wutar lantarki na Kudu maso Yammacin Amurka.

Tarin Bayanai: Samun bayanan lodi na tsarin sa'o'i 5+ na tarihi da bayanan hasken rana da suka zo da juna don wurin tashar (ko wakili daga bayanan NASA/PVGIS).
Ƙirar Fitowar PV: Canza hasken rana zuwa samarwar AC ta amfani da ƙirar aikin PV, la'akari da zafin jiki, ingancin inverter, da asarar tsarin.
Kafa Tsarin Haɗari na Asali: Ta amfani da ƙirar isasshen albarkatu na ƙididdiga (misali, simintin Monte Carlo na bi da bi), lissafta LOLE na tsarin ta amfani da janareto na gargajiya da ake da su, la'akari da ƙimar lalacewar tilas.
Lissafin ELCC:
- Ƙara jerin lokaci na samar da PV mai 100 MW zuwa tarin ƙarfi.
- Sake gudanar da ƙirar isasshen ƙarfi don nemo sabon LOLE, mafi ƙanƙanta.
- A jere, ƙara wani yanki na lodi mai dorewa zuwa tsarin asali (ba tare da PV ba) har sai LOLE ɗinsa ya yi daidai da LOLE na tsarin tare da PV.
- Adadin lodi da aka ƙara shine ELCC. Misali, idan ƙara lodi na 28 MW ya dawo da LOLE na asali, ELCC shine 28 MW, yana ba da darajar ƙarfi na 28%.
Binciken Hankali: Maimaita binciken don yanayin shigar wutar rana daban-daban, shekaru daban-daban na yanayi, da kuma ƙara ajiyar baturi na sa'o'i 4 mai 50 MW tare da PV.

Fahimtar da ake Tsammani: ELCC zai fi girma lokacin da fitowar wutar rana ta yi daidai da lokutan kololuwar tsarin (sau da yamma a rani). Ƙara ajiya zai iya ƙara ELCC sosai, saboda yana ba da damar matsar da wasu samarwa zuwa kololuwar maraice.

9. Aikace-aikacen Gaba & Jagorori

Hanyoyin da aka zayyana suna shirye don juyin halitta da faɗaɗa aikace-aikace:

Ƙimar Albarkatun Haɗaɗɗe: Tsarin zai zama mai mahimmanci don kimanta tashoshin haɗaɗɗe (PV+iska+ajiye), inda darajar ƙarfi ba ta da layi kuma ta fi jimillar sassanta.
Isasshen Ƙarfi na Rarraba: Yayin da wutar rana ta yadu, za a buƙaci irin waɗannan hanyoyin ƙididdiga don tantance isasshen cibiyar sadarwa ta gida da ƙarfin ɗaukar baƙo, suna motsawa fiye da sauƙaƙan dokokin yatsa na "15% na kololuwa".
Tsarawa Daidaitaccen Yanayi: Haɗa hasashen ƙirar yanayi don tantance yadda canje-canjen yanayin gajimare, zafin rana, da bayanan buƙatu zasu shafi darajar ƙarfin wutar rana na dogon lokaci a cikin rayuwar kadara na shekaru 30.
Haɓaka Koyon Injin: Yin amfani da cibiyoyin sadarwar adawa masu samarwa (GANs) ko ƙirar masu canzawa don ƙirƙirar jerin lokaci na roba, na dogon lokaci na haɗin kai na buƙatu da fitarwar VG daga ƙarancin bayanan tarihi, haɓaka amincin ƙididdiga. Wannan hanya ta samo asali ne daga ci gaban ƙirƙirar bayanan roba na gaske a wasu yankuna.
Kasuwannin Ƙarfi Masu Ƙarfi: Kasuwanni na gaba na iya matsawa zuwa ƙimar ƙarfi mai canzawa ko na musamman a wuri, waɗanda aka lissafta a kusa da ainihin-lokaci bisa ga yanayin yanayi da yanayin tsarin da aka hasashen, suna buƙatar amfani da ƙirar da aka kwatanta a cikin wannan rahoton.

10. Nassoshi

Ƙungiyar Aiki ta IEEE PES kan Darajar Ƙarfin Wutar Iska, "Darajar Ƙarfin Wutar Iska," IEEE Transactions on Power Systems, vol. 29, lamba. 3, shafi. 1363-1372, Mayu 2014.
Hukumar Amincin Lantarki ta Arewacin Amurka (NERC), "Hanyoyin Ƙira da Lissafin Gudunmawar Ƙarfin Samarwa Mai Canzawa don Tsarin Isasshen Albarkatu," Rahoton NERC, Maris 2011.
Hukumar Makamashi ta Duniya (IEA), "Tsarin Wutar Lantarki a Canji," 2020. [Kan layi]. Ana samun: https://www.iea.org/reports/power-systems-in-transition
J. Zhu, T. Park, P. Isola, A. A. Efros, "Fassarar Hoto zuwa Hoto mara Haɗin gwiwa ta amfani da Cibiyoyin Sadarwar Adawa masu Da'ira," a cikin Proc. IEEE ICCV, 2017. (An ambata a matsayin misali na ƙirar samarwa mai zurfi da ya dace da ƙirƙirar bayanan roba don VG).
P. Denholm et al., "Matsayin Ajiyar Makamashi tare da Samar da Wutar Lantarki Mai Sabuntawa," Rahoton Fasaha na National Renewable Energy Laboratory (NREL) NREL/TP-6A2-47187, 2010.
R. Sioshansi, P. Denholm, T. Jenkin, J. Weiss, "Ƙimar Ƙimar Ajiyar Wutar Lantarki a PJM: Sasantawa da Wasu Tasirin Jin daɗi," Ilimin Tattalin Arzikin Makamashi, vol. 31, lamba. 2, shafi. 269-277, 2009.