Dɛn ne Grid Stability?

Grid stability kyerɛ tumi a anyinam ahoɔden grid no tumi ma nneɛma a wɔde ma ne nea wɔhwehwɛ no kari pɛ bere a ɛma ahoɔden ne frequency kɔ so wɔ adwumayɛ anohyeto a ahobammɔ wom mu. Saa kari pɛ yi hwɛ hu sɛ wɔde anyinam ahoɔden kɔ so, a wotumi de ho to so ma adetɔfo bere mpo a ɔhaw ahorow a wɔnhwɛ kwan ba, te sɛ nnwinnade a asɛe anaasɛ nsakrae a ɛba mpofirim wɔ ahwehwɛde mu no.

Adwene no ho hia efisɛ grids a entumi nnyina no ma mfiri sɛe, cascading di huammɔ, na anyinam ahoɔden a ɛtrɛw a ɛhaw nnwuma a ɛho hia. Nnɛyi grids hyia nsɛnnennen a ɛrekɔ soro a ɛbɛma wɔatumi agyina pintinn bere a ɛdannan fi fossil fuel a wotumi hyɛ ho nkɔm so kɔ nneɛma a wɔyɛ no foforo a ɛsakra te sɛ owia ne mframa so, a ɛsakra sɛnea nkitahodi ahorow no kura sɛnea ɛkari pɛ no titiriw.

Adum Abiɛsa a Ɛma Grid Gyina pintinn

Grid a ɛgyina pintinn no gyina nneɛma mmiɛnsa a ɛka bom a ɛbom yɛ adwuma de hwɛ ma ahoɔden a wɔde ma a wotumi de ho to so no kɔ so.

Frequency Stability a Ɛyɛ Den

Frequency gyina hɔ ma ahoɔhare a mprempren kyinhyia a ɛsesa{0}}taa yɛ 50 Hz wɔ Europa anaa 60 Hz wɔ Amerika Atifi fam. Sɛ anyinam ahoɔden a wɔyɛ ne nea wɔde di dwuma no kari pɛ a, mpɛn dodow a wɔde di dwuma no kɔ so yɛ nea ɛkɔ so daa. Kari a ɛnkari pɛ biara ma mpɛn dodow no fi botae ahorow a wɔde asi wɔn ani so no so.

Amanneɛ kwan so anyinam ahoɔden mfiri ahorow no kura turbine ne generators akɛse a ɛkyinkyini a efi awosu mu no gyina frequency nsakrae ano denam honam fam inertia so. Sɛ nneɛma a wɔhwehwɛ no kɔ soro mpofirim a, saa ade a ɛkyinkyini yi brɛ ase kakra, na ɛdan ahoɔden a ɛtwetwe no ma ɛbɛyɛ anyinam ahoɔden na ɛma frequency a ɛkɔ fam no siw ano. Eyi ba ara kwa, na ɛtɔ bere ma control system ahorow de sesa tumi a ɛba no.

Ɛsɛ sɛ grid no kura frequency mu wɔ tight tolerances-taa yɛ ±0.2 Hz. Nneɛma a ɛtwe ne ho boro saa anohyeto ahorow yi so no kanyan mfiri a ɛbɔ ho ban no ma wotwa mu, na ebetumi ama wɔatwa adwuma kɛse. Wɔ afe 2021 mu no, Texas nyaa mpɛn dodow a ɛkɔɔ fam kɛse wɔ awɔw bere mu ahum bere a awo ntoatoaso no antumi ne nea wɔhwehwɛ no nhyia, na ɛde anyinam ahoɔden a ɛtrɛw a ɛkaa ɔpepem pii bae.

Voltage a Ɛyɛ Den

Voltage stability hwehwɛ sɛ wɔbɛkɔ so akura anyinam ahoɔden nhyɛso a ɛfata mu wɔ transmission ne distribution network no nyinaa mu. Voltage a ɛba fam dodo ma brownouts na mfiri no ntumi nyɛ adwuma yiye. Voltage a ɛboro so sɛe insulation na ɛma mfiri nkwa nna yɛ tiaa.

Asɛnnennen no mu yɛ den bere a wɔtwe wɔn ho fi akyirikyiri no. Bere a anyinam ahoɔden fa nhama a wɔde fa anyinam ahoɔden mu no, ahoɔden a ɛwɔ anyinam ahoɔden no sɛe fi awosu mu esiane ahoɔden a ɛko tia nti. Grid adwumayɛfoɔ de transformers, capacitor banks, ne reactive power compensation di dwuma de hwɛ voltage so wɔ ranges a wɔgye tom mu-taa yɛ ±5% wɔ nominal values ​​mu.

Adesoa a emu yɛ duru wɔ bere a wɔhwehwɛ pii mu no ma ahoɔden a ɛyɛ den no yɛ den. Mfiridwuma mu mfiri, mframa a wɔde yɛ adwuma, ne data center akɛse di tumi a ɛyɛ adwuma kɛse, na sɛ wɔanhwɛ so yiye a, ebetumi ama ahoɔden a ɛwɔ ahoɔden no ahwe ase. Grid adwumayɛfoɔ kɔ so hwɛ voltage levels wɔ mmeaeɛ a ɛho hia na wɔde control measures di dwuma de siw ɔsɛeɛ ano.

Bere tiaa mu Gyinabea

Bere tiaa mu pintinn kyerɛ tumi a grid no tumi gyina mpofirim shocks-aprannaa a ɛbɔ, short circuits, nnwinnade a ɛdi huammɔ, anaasɛ transmission line a ɛsɛe ano. Saa basabasayɛ yi betumi ama anyinam ahoɔden a ɛsakra basabasa a ɛde ahunahuna sɛ ɛbɛma mfiri a ɛma anyinam ahoɔden no agyae adwumayɛ.

Sɛ generators hwere synchronization a, ɛde anyinam ahoɔden twe wɔn ho wɔn ho, na ɛde oscillations a ɛsɛe ade ba. Ɛsɛ sɛ ahobammɔ nhyehyɛe ahorow yɛ adwuma wɔ milisekɔn kakraa bi mu de yi mfomso ahorow fi hɔ na esiw cascading huammɔdi ano. Atifi Apuei anyinam ahoɔden a ɛtɔe wɔ afe 2003 mu no kyerɛɛ sɛnea nhama biako a ɛde anyinam ahoɔden kɔ no betumi atrɛw denam ahobammɔ a ɛnsɛ so, na awiei koraa no aka nnipa ɔpepem 50.

Nnɛyi grid ahorow de nneɛma pii a ɛbɔ ho ban di dwuma. Relay ahorow hu tebea horow a ɛnteɛ na ɛtwa afã horow a ɛka no mu. Nhyehyɛe ahorow a wɔde wɔn ankasa yɛ no sesa tumi no fa akwan foforo so. Backup reserves gyina hɔ a wɔasiesie wɔn ho sɛ wobetua awo ntoatoaso a ayera no ka. Saa redundancy yi da no adi sɛ ɛho hia-ɛsɛ sɛ grids nya nkwa wɔ wɔn generator anaa transmission line a ɛso sen biara biako a wɔhwere no mu a ɔhaw biara nni mu.

Sɛnea Amanneɛbɔ mu Grids Kɔraa Gyinabea

Mfe du du pii no, anyinam ahoɔden mfiri akɛse a ɛwɔ mfinimfini no de mfaso horow a efi awosu mu a ɛma nneɛma gyina pintinn a wɔn a wɔyɛ adwuma no betumi de wɔn ho ato so a wɔmfa wɔn ho nnye mu kakraa bi mae.

Fango, gas, ne nuklea adwumayɛbea ahorow no wɔ nnwinnade akɛse a ɛkyinkyini-turbines, generators, ne motors-a ɛkyinkyini ma ɛne grid frequency hyia. Saa ade a ɛkyinkyini yi siee ahoɔden kɛse a ɛtwetwe ade, na ɛde abɔde mu ahoɔden a ɛnyɛ adwuma a ɛko tia nsakrae a ɛba mpɛn dodow ano bae. Fango adwumayɛbea a ɛyɛ 500 MW a wɔtaa yɛ no betumi anya ahoɔden a wɔde sie a ɛyɛ sikani 5-10, a ɛdɔɔso sɛ ɛbɛma mpɛn dodow no agyina wɔ basabasayɛ dodow no ara mu.

Saa mfiri a wɔde yɛ anyinam ahoɔden a wɔtaa de di dwuma yi nso ma wonya ahoɔden a wotumi de kɔ. Ná wɔn a wɔde di dwuma no betumi ama nea efi mu ba no akɔ soro anaasɛ akɔ fam wɔ simma kakraa bi mu denam pɛtro a wɔde hyɛ mu a wɔbɛsakra mu no so. Saa tumi a wotumi di so yi maa nneɛma a wɔde ma ne nea wɔhwehwɛ a wɔkari pɛ no yɛɛ tẽẽ. Grid frequency a ɛrekɔ fam? Ma nsu a ɛyɛ hyew a ɛkɔ turbine ahorow mu no nkɔ soro. Mpɛn dodow a ɛkɔ soro? Tew pɛtro a wode di dwuma no so.

Bio nso, synchronous generators no ankasa de reactive power guu mu de boa voltage. Wɔn electromagnetic suban no fi awosu mu piaa wɔn akyi tiaa voltage nsakrae, na ɛmaa wɔn ankasa-regulating stability. Mfiridwumayɛfo yɛɛ grids a wɔfaa no sɛ saa su ahorow yi bɛba bere nyinaa.

Nhyehyɛe no yɛɛ adwuma wɔ ɔkwan a wotumi de ho to so so. US adetɔfo nyaa osuahu a ennu nnɔnhwerew anum a wɔde twaa adwuma afe biara wɔ sɛ wɔkyekyem pɛpɛɛpɛ a, ahotoso-99.95%. Nneɛma a ɛtwaa mu dodow no ara sii wɔ mpɔtam hɔ nhama a wɔde kyekyɛ nneɛma so fi nnua ntini anaa kar akwanhyia, na ɛnyɛ nhyehyɛe a entumi nnyina pintinn.

Ahoɔden a Wɔyɛ Foforo Nsakrae Ho Asɛnnennen no

Wiase nyinaa nsakrae a ɛkɔ ahoɔden a wɔyɛ no foforo so no sesa sɛnea grid no gyina pintinn no titiriw, na ɛde nsɛnnennen a atetesɛm mu nhyehyɛe ahorow anhwɛ kwan da ba.

Inertia Ɔhaw no

Owia ahoɔden mfiri ne mframa a wɔde yɛ adwuma no nam ɛlɛtrɔnik inverter ahorow a ɛma anyinam ahoɔden so na ɛka grids ho, na ɛnyɛ mfiri a ɛkyinkyini. Saa inverters yi nni honam fam mass spinning wɔ synchronization ne grid frequency. Sɛ ahwehwɛde no kɔ soro a, wontumi nyi ahoɔden a wɔde sie a ɛma nneɛma kɔ so no mfi hɔ ara efisɛ emu biara nni hɔ.

Nhwehwɛmu kyerɛ asɛm yi dodow pɛpɛɛpɛ. Nhwehwɛmu a wɔayɛ wɔ IEEE sɔhwɛ nhyehyɛe ho kyerɛ sɛ sɛ wɔde ahoɔden a wɔyɛ no foforo besi synchronous generation 40% ananmu a, ebetumi atew nhyehyɛe no inertia so 60%. Saa so tew yi ma frequency yɛ nea ɛyɛ mmerɛw kɛse wɔ basabasayɛ ho-frequency nsakrae dodow betumi abu abɔ ho abiɛsa, na ɛma control systems bere kakraa bi a wɔde bɛyɛ ho biribi.

California ne Texas, a ɛwɔ ahoɔden a wɔde yɛ foforo a ɛkɔ soro no, anya frequency volatility kan-hand. Wɔ anwummere nnɔnhwerew a owia ahoɔden so tew ntɛmntɛm no, wɔn a wɔyɛ nhyehyɛe no bɔ mmɔden sɛ wɔbɛkɔ so akura mpɛn dodow a wɔde yɛ adwuma no mu bere a afifide a wɔtaa de di dwuma no kɔ soro no. Battery storage systems seesei de milisecond-response frequency regulation a na enhia mfe du a atwam ni ma.

Asɛnnennen a Ɛfa Ntɛmntɛm Ho

Nea ɛnte sɛ fango adwumayɛbea ahorow a ɛma anyinam ahoɔden a ɛkɔ so daa bere a wɔafi ase no, nea wɔyɛ no foforo no sakra bere a wim tebea te. Mununkum biako a ɛtwam betumi atew owia ahoɔden afuw mu nneɛma a wɔyɛ so 70% wɔ sikɔne kakraa bi mu. Mframa awo ntoatoaso gu ahorow dɔnhwerew biara, da biara, ne mmere biara a egyina wim tebea so.

Saa nsakraeɛ yi ma nneɛma a wɔde ma-ahwehwɛdeɛ kari pɛ yɛ den. Ɛsɛ sɛ grid adwumayɛfoɔ kɔ so hyɛ nkɔm sɛ wɔbɛtumi ayɛ foforɔ na wɔhyehyɛ backup awoɔ ntoatoasoɔ. Mfomso a ɛba wɔ nkɔmhyɛ mu no kyerɛ ase tẽẽ kɔ asiane ahorow a ɛma nneɛma gyina pintinn mu. Nna a mframa awoɔ ntoatoasoɔ no kɔ fam mpofirim wɔ nkɔmhyɛ ase no, ɛsɛ sɛ adwumayɛfoɔ de reserves-kɔsi hɔ ntɛmntɛm anaasɛ wohyia frequency haw.

California "duck curve" no kyerɛkyerɛ asɛnnennen no mu. Owia awo ntoatoaso no kɔ soro awiabere, afei ɛkɔ fam kɛse awiabere bere a owia rekɔtɔ no. Nneɛma a wɔhwehwɛ no kɔ soro bere koro no ara mu bere a nkurɔfo san kɔ fie na wɔde mfiri ahorow yɛ adwuma no. Ɛsɛ sɛ grid adwumayɛfoɔ ma awoɔ ntoatoasoɔ a wɔtaa yɛ no kɔ soro 13,000 MW wɔ nnɔnhwereɛ mmiɛnsa pɛ mu-adeɛ a ɛma nhyehyɛeɛ no tumi yɛ den na ɛma asiane a ɛwɔ hɔ sɛ entumi nnyina pintinn no yɛ kɛseɛ.

Awo Ntoatoaso a Wɔakyekyɛ mu Asɛnnennen no

Wɔ abakɔsɛm mu no, na anyinam ahoɔden sen wɔ ɔkwan biako so: efi mfiridwuma akɛse mu fa nhama a wɔde fa anyinam ahoɔden mu kɔ wɔn a wɔde di dwuma no nkyɛn. Owia a ɛwɔ ɔdan atifi ne mframa a wɔkyekyɛ no dan saa nhwɛso yi, na ɛma adetɔfo nso yɛ nneɛma a wɔyɛ. Mprempren tumi sen fa akwan abien so wɔ nkyekyɛmu gyinabea ahorow a wɔannwene da sɛ wɔbɛyɛ adwuma a ɛte saa da.

Saa nkyekyɛmu yi ma voltage management yɛ den. Sɛ mpɔtam hɔ owia ahoɔden awo ntoatoaso boro mpɔtam hɔ ahwehwɛde so a, ahoɔden kɔ soro boro anohyeto a wogye tom so. Distribution transformers ne nnwinnade no nya osuahu a ɛma wɔsɛe ntɛmntɛm. Ahobanbɔ nhyehyɛe a wɔayɛ a wɔfa no sɛ tumi a ɛsen fa ɔkwan biako so no betumi rentumi nhu mfomso a ɛsen kɔ akyi-.

Grid adwumayɛfo hwere nea wotumi hu wɔ awo ntoatoaso a wɔakyekyɛ mu. Nea ɛnte sɛ afifide a ɛwɔ mfinimfini a nkitahodi tẽẽ wɔ hɔ no, ɔdan atifi nhyehyɛe mpempem pii yɛ adwuma wɔ ahofadi mu. Wɔn a wɔyɛ adwuma no ntumi nni awo ntoatoaso yi so tẽẽ wɔ tebea horow a egye ntɛmpɛ mu, na ɛtew tumi a wotumi kɔ so gyina pintinn wɔ mmere a emu yɛ den mu no so.

Nnɛyi Gyinabea Ano Aduru

Mfiridwumayɛfo ne nhwehwɛmufo ayɛ akwan horow pii a wɔbɛfa so akura grid no mu den bere a nneɛma a wɔyɛ no foforo a ɛkɔ mu no kɔ soro no, na emu biara di mfiridwuma mu nsɛnnennen pɔtee bi ho dwuma.

Battery Ahoɔden a Wɔde Siesie Nneɛma

Batere ahorow puei sɛ nnwinnade a tumi wom a ɛma nneɛma gyina hɔ pintinn esiane sɛnea etumi yɛ ho biribi ntɛmntɛm yiye nti. Nnɛyi batere nhyehyɛe ahorow tumi de ahoɔden hyɛ mu anaasɛ ɛtwetwe ahoɔden wɔ milisekɔn 20 mu-ɛyɛ ntɛmntɛm mpɛn 50 sen mfiri a wɔde yɛ anyinam ahoɔden a wɔtaa de di dwuma.

Hornsdale Power Reserve a ɛwɔ South Australia a ɛwɔ 100 MW lithium-ion battery no daa saa tumi yi adi kɛse. Bere a fango adwumayɛbea bi hwee ase mpofirim wɔ intanɛt so wɔ afe 2017 mu no, batere no yɛɛ ho biribi wɔ milisekɔn 140 mu, na ɛmaa grid frequency no yɛɛ den ansa na adwumayɛbea a wɔtaa yɛ no atumi ayɛ ho biribi. Eyi siw cascade huammɔdi a ebetumi aba no ano.

Battery ho ka so atew 90% firi afe 2010, na ɛma grid-scale deployment yɛ sikasɛm mu mfasoɔ. California de batere a wɔde sie 8,000 MW kaa ho wɔ afe 2020{8}}2024 ntam, mprempren ɛyɛ nea ɛdɔɔso sen biara wɔ wiase nyinaa. Saa nhyehyɛe ahorow yi ma nnwuma ahorow pii a ɛma nneɛma gyina pintinn: frequency regulation, voltage support, peak shaving, ne black-start tumi.

Tumi batere-lithium-ion nhyehyɛe a wɔayɛ no pɔtee ama grid dwumadie-yɛ soronko wɔ deɛ ɛwɔ anyinam ahoɔden kar mu. Wɔde tumi a wɔde ba ne kyinhyia nkwa di kan sen ahoɔden a ɛyɛ den, a wɔayɛ no yiye ama da biara da charge-discharge kyinhyia mpempem pii. LFP chemistry reyɛ kɛse wɔ grid storage so esiane ahobammɔ a ɛkorɔn ne 6,000+ cycle nkwa nna nti.

Mfiridwuma a Wɔde Yɛ Nneɛma a Wɔde Yɛ Nneɛma

Esiane sɛ nhyehyɛe ahorow a wɔyɛ no foforo nni honam fam ahoɔden a ɛnyɛ adwuma nti, mfiridwumayɛfo yɛɛ akwan horow a wɔbɛfa so asuasua no wɔ kɔmputa so. Wobetumi ayɛ inverters nhyehyɛe sɛnea ɛbɛyɛ a wobehu nsakrae a ɛba frequency mu na wɔayɛ ho biribi denam tumi a ɛba no a wɔbɛsakra no sɛnea ɛfata so, asuasua synchronous generator nneyɛe.

Saa "virtual inertia" anaa "synthetic inertia" yi yɛ adwuma denam frequency deviations a wɔhwɛ so. Sɛ frequency so tew a, control system no ma ahoɔden a efi batere mu ba no yɛ kɛse ntɛmntɛm anaasɛ eyi ahoɔden a ɛma mframa bɔ fi mframa turbine rotors mu bere tiaa bi. Sɛ frequency kɔ soro a, nhyehyɛe no brɛ nea efi mu ba no ase. Mmuae bere ho hia-ndwuma dodow no ara nya mmuae 100-300 milisekɔn.

Grid-forming inverters gyina hɔ ma nkɔso a ɛboro mfitiase synthetic inertia so. Sɛ́ anka wobedi grid voltage ne frequency akyi passively no, saa inverter ahorow yi de nsiyɛ de voltage references si hɔ, na wɔyɛ wɔn ade te sɛ atetesɛm generators. Nnwuma pii a ɛwɔ wiase nyinaa kyerɛ sɛnea ɛyɛ adwuma yiye-AGL Broken Hill battery a ɛwɔ Australia no yɛ adwuma yiye wɔ grid-forming mode mu, de stability services a kan no na ɛhwehwɛ synchronous generators ma.

Nhwehwɛmu a efi Ɔman Ahoɔden a Wɔyɛ Foforo Nhwehwɛmubea no si so dua sɛ "owia, mframa, ne ahoɔden a wɔde afrafra ahoɔden mfiri betumi ama wɔn ankasa fibea a ɛma grid no gyina-a ebetumi ayɛ nea ɛnte sɛ biribiara a ɛwɔ grid no so mprempren" bere a wɔde nneɛma a ɛkɔ akyiri a wɔde di dwuma ne ahoɔden a wɔkora so ahyɛ mu no.

Condensers a Wɔde Di Dwuma wɔ bere koro mu

Nnwumakuw bi a wɔde anyinam ahoɔden di dwuma no paw sɛ wɔbɛkora mfiri a ɛkyinkyini so titiriw esiane mfaso a ɛwɔ so sɛ ɛbɛkɔ so agyina pintinn nti, a wɔrennya anyinam ahoɔden mpo. Synchronous condensers yɛ titiriw generators a enni prime movers-spinning masses akɛse a ɛma inertia ne reactive power support.

Elering, Estonia transmission adwumayɛfoɔ, de 50 MVAR synchronous condensers mmiɛnsa sii hɔ wɔ afe 2024 mu de maa wɔn grid no yɛɛ den wɔ berɛ a wɔde renewable integration reyɛ adwuma. Unit biara ma megawatt-seconds 1,750 a ɛyɛ inertia-a ɛne sɛ wɔbɛma generator kɛseɛ bi a ɛkyinkyini ahoɔden a ɛwɔ hɔ ama ahoɔden a ɛtumi gyina pintinn no yɛ pɛ.

Saa mfiri yi da adi sɛ ɛsom bo titiriw wɔ mmeae a wɔsakra fi pɛtro a efi abo mu no mu. Atumfoɔ binom dan fango adwumayɛbea ahorow a ɛrekɔ pɛnhyen no ma ɛbɛyɛ condensers a ɛyɛ adwuma bere koro mu, na wɔkora wɔn mfiri a ɛma anyinam ahoɔden so bere a woyi nsu a wɔde yɛ nsu ne pɛtro nhyehyɛe ahorow fi hɔ no. Saa repurposing yi kora stability infrastructure so wɔ ɛka a ɛba fam sen installations foforo.

Nea enye wɔ ho ne ɛka a wɔbɔ ne nsiesie. Synchronous condensers hwehwɛ sɛ wɔhwɛ nnwinnade a ɛkyinkyini, onwini nhyehyɛe, ne srade so daa. Adwumayɛ ho ka boro nea ɛwɔ static power electronics de so, ɛwom sɛ adwumayɛfo binom gye eyi tom esiane su a ɛyɛ den a ɛma mfiri yi gyina pintinn nti.

Grid Management Systems a Ɛkɔ Anim

Nnɛyi ahoɔden a ɛgyina pintinn no de ne ho to softwea ne sensor ahorow a ɛyɛ nwonwa a ɛma wotumi hu bere ankasa na wotumi di so wɔ ntwamutam nyinaa so kɛse.

Wide-area monitoring systems de phasor measurement units (PMUs) di dwuma de kyere grid tebea wɔ milisecond nsusuwii mu. Saa sensor ahorow yi hu sɛnea nneɛma ntumi nnyina pintinn ansa na wɔatrɛw, na ɛma wotumi di kan yɛ ade. U.S. de PMU bɛboro 2,000 dii dwuma wɔ afe 2024 mu, na ɛde tebea ho nimdeɛ a ebi mmae da baa wɔn a wɔyɛ grid adwumayɛfo no so.

Nyansa a wɔde ayɛ ne mfiri adesua ma ahoɔden a wɔde di dwuma yiye. Algorithms hyɛ nkɔm sɛ nneɛma a wɔyɛ no foforo bɛba, wɔhyɛ nea wɔhwehwɛ ho nkɔm, na wɔkamfo nhyehyɛe a eye sen biara a wɔde bɛkɔ akɔma nkurɔfo kyerɛ. Ankasa-bere a ɛyɛ papa sesa nneɛma mpempem pii a wɔakyekyɛ-batere, adesoa a ɛyɛ mmerɛw, ne awo ntoatoaso a wotumi di so-de ma ɛgyina pintinn yiye sen sɛnea nnipa adwumayɛfo betumi de nsa ayɛ.

Demand response nhyehyɛe ahorow sesa consumption nhyehyɛe ahorow de boa stability. Wɔ tebea horow a emu yɛ den mu no, nhyehyɛe ahorow a wɔde mfiri yɛ no tew nnesoa a efi mfiridwuma mmeae a wɔde wɔn ho hyɛ mu, aguadi adan, ne mfiri a wɔde hwɛ ɔhyew a nyansa wom mu ba no so. Texas ahoɔden a wɔde bua ahwehwɛdeɛ no duu 3,500 MW wɔ afe 2024 mu, a ɛne sɛ wɔbɛkwati anyinam ahoɔden adwumayɛbea akɛseɛ mmiɛnsa a wɔbɛsi no yɛ pɛ.

Grid Stability Metrics ne Adwumayɛ

Grid adwumayɛ ho nteaseɛ hwehwɛ sɛ wɔde metrics a wɔtumi kyerɛ dodoɔ a adwumayɛfoɔ hwɛ so daa.

Nnɛyi grids nya ahotoso a ɛyɛ nwonwa ɛmfa ho sɛ ɛreyɛ den kɛse no. Sɛ wɔkyekyɛ mu a, U.S. adetɔfoɔ nya osuahu a ɛnnu mprenu a wɔde twa adwuma afe biara, a ne nyinaa nnu nnɔnhwereɛ anum-a ɛkura 99.95% a ɛwɔ hɔ. Ɛkame ayɛ sɛ nneɛma a ɛtwa mu nyinaa fi mpɔtam hɔ nkyekyɛmu ho nsɛm te sɛ ahum a ɛsɛe ade, ɛnyɛ nhyehyɛe a entumi nnyina kɛse.

Frequency stability metrics twe adwene si parameters mmienu so: frequency nadir (beae a ɛba fam koraa wɔ disturbance akyi) ne rate of change of frequency (RoCoF). Grid codes taa hwehwɛ sɛ frequency kɔ so tra 59.5 Hz wɔ contingency a enye koraa no mu. RoCoF anohyeto ahorow siw ahobammɔ mfiri kwan sɛ ɔhaw ntumi nkɔ-nhyehyɛe dodow no ara gyina 0.5-1.0 Hz kwan wɔ sekan biara mu.

Voltage stability metrics si so dua sɛ wɔbɛma voltage akɔ so ayɛ ±5% wɔ nominal values ​​mu wɔ tebea a ɛfata mu ne ±10% wɔ contingencies mu. Tumi pa susuw di harmonics, flicker, ne transients a ɛsɛe mfiri adwumayɛ akyi sɛ mpo voltage da so ara yɛ nea wogye tom wɔ din mu a.

System ahoɔden-tumi a ɛma voltage waveform stability-da adi sɛ metric a ɛho hia. Ɛsusu short-circuit tumi wɔ grid nkitahodi mmeae. Ɛtɔ mmere bi a, mpɔtam a ahoɔden a wɔde yɛ foforo pii kɔ mu no hyia nhyehyɛe no ahoɔden a ɛnnɔɔso, na ɛhwehwɛ sɛ wɔde nneɛma foforo a ɛbɛma nneɛma a ɛyɛ den agyina ansa na wɔde ahoɔden a wɔyɛ no foforo pii abɔ mu.

California daa ahoɔden a ɛdi mu adi wɔ ahohuru berɛ mu wɔ afe 2024. Ɛmfa ho sɛ ɔhyew a ɛsen biara ne owia ahoɔden a ɛyɛ 18 GW (21% wɔ ahwehwɛdeɛ a ɛsen biara mu) no, grid no kuraa ahotosoɔ mu a wɔamfa flex kɔkɔbɔ amma. Battery a wɔde sie a ɛma ahoɔden 8,000 MW wɔ anwummere bere a wɔde hyɛn mu no daa adi sɛ ɛho hia kɛse ma saa nkonimdi yi.

Sikasɛm ne Asetra mu Nkyerɛkyerɛmu

Grid a ɛgyina pintinn no nya nea ɛboro mfiridwuma mu ahotosoɔ so nkɛntɛnsoɔ-ɛka sikasɛm, pɛyɛ, ne ɔmanfoɔ yiedie-asetena.

Nneɛma a entumi nnyina no ma U.S. sikasɛm hwere bɛyɛ dɔla ɔpepepem 150 afe biara denam anyinam ahoɔden a ɛtwa ne anyinam ahoɔden pa ho nsɛm so. Data mmeae, mmeae a wɔyɛ nneɛma, ne ayaresabea ahorow hyia nea efi mu ba a emu yɛ den fi bere tiaa mu ɔhaw ahorow mpo mu. Voltage sag biako betumi asɛe mfiridwuma mu nneɛma, na asɛe nnɔnhwerew pii a wɔde yɛ nneɛma no na asɛe nneɛma.

Saa ɛka ahorow yi yɛ adesoa a ɛnsɛ ma nnipa a wonni ahobammɔ. Mpɔtam a wɔn sikasɛm tebea sua ne nkuraase taa nya bere tenten a wɔde twa adwuma esiane nnwuma dedaw ne sanba a ɛkyɛ nti. Wɔ afe 2021 Texas awɔw bere mu ahum no mu no, anyinam ahoɔden a ɛtwaa mu no trɛwee nna pii wɔ mpɔtam bi bere a afoforo nso maa anyinam ahoɔden san bae wɔ nnɔnhwerew kakraa bi mu.

Sɛ́ wɔbɛkɔ so akura nneɛma a ɛyɛ den mu bere a wɔredan akɔ nneɛma a wɔyɛ no foforo so no hwehwɛ sɛ wɔde sika kɛse bɛto mu. U.S. Ahoɔden Dwumadibea no de dɔla ɔpepepem 30 sii hɔ de yɛɛ nneɛma a wɔde fa nsu mu no mu nkɔso ne nhama a wɔde fa nsu mu a ɛyɛ nnɛyi de wɔ afe 2022-2024 ntam. Sika foforo a wɔde hyɛ mu no kɔ batere a wɔde sie, inverter ahorow a ɛkɔ anim, ne nhyehyɛe ahorow a wɔde hwɛ nneɛma so mu. Awiei koraa no, saa ka ahorow yi nya anyinam ahoɔden bo so nkɛntɛnso, ɛwom sɛ mfaso a wonya fi pɛtro a wɔde di dwuma a ɛso tew ne wim tebea a wɔkwati mu no boro nsakrae ho ka so de.

Adwumayɛ mu nsakrae ka nsakrae a ɛba sɛnea nneɛma gyina pintinn no ho. Amanneɛ kwan so anyinam ahoɔden adwumayɛbea adwumayɛfo gyinabea so tew bere a adwumayɛbea ahorow kɔ pɛnhyen no, bere a ahwehwɛde a ɛfa batere nhyehyɛe ho mfiridwumayɛfo, anyinam ahoɔden ɛlɛtrɔnik mfiridwumayɛfo, ne wɔn a wɔyɛ grid software ho no kɔ soro. Adwumayɛfo a wɔsan tete wɔn ho nhyehyɛe ahorow boa adwumayɛfo a wɔatu afi wɔn afie mu no ma wɔdan kɔ dwumadi ahorow a ɛreba wɔ nnɛyi nhyehyɛe a wɔayɛ no mu.

Mpɔtam Nsonsonoe ne Nsɛm a Wɔayɛ ho Nhwehwɛmu

Mpɔtam ahodoɔ hyia nsɛnnennen soronko a ɛfa ahotɔ ho a egyina wɔn nneɛma a wɔde afrafra, asasesin, ne mmara nhyehyɛeɛ so.

California Battery-Powered Stability a Ɛwɔ Hɔ

California di batere a wɔkora so a wɔde di dwuma no anim, a botae ahorow a ɛyɛ den a wɔde yɛ foforo ne ahiade ahorow a ɛma nneɛma gyina pintinn na ɛkanyan no. Ɔman no de batere ahoɔden bɛboro 5,000 MW kaa ho wɔ afe 2021-2024 ntam, seesei ɛde nnwuma a ɛho hia a ɛma nneɛma gyina pintinn a kan no na ɛhia sɛ wɔyɛ gas adwumayɛbea ahorow no ma.

October 2024 daa saa tumi yi adi. Batere nhyehyɛe ahorow no maa MW 8,000 fii mu bere a na ahiade kɛse anwummere no, na ɛmaa owia ahoɔden a ɛkɔ fam no yɛɛ mmerɛw na ɛmaa anyinam ahoɔden a ɛwɔ anyinam ahoɔden mu no kɔɔ so yɛɛ den. Nea edi kan no, ɔman no nyaa ahoɔden a ɛho tew adwumayɛ 100% wɔ nnafua 60% mu, a ɛkyerɛ sɛ ahoɔden a wɔyɛ no foforo ne ahoɔden a ɛyɛ den ne nnwuma a ɛfata bom tra.

Texas Nneɛma a Wɔyɛ no Foforo a Wɔde Ka Abom

Texas yɛ adwuma wɔ isolated grid (ERCOT) a nkitahodi kakraa bi na ɛne mpɔtam a ɛbemmɛn no ntam, na ɛma nsɛnnennen a ɛfa ahotɔ ho no mu yɛ den. Ɔman no de mframa ne owia ahoɔden-mprempren 40% kaa ho ntɛmntɛm-bere a ɛkura frequency stability denam adebɔ gua so akwan so.

ERCOT tɔɔ synthetic inertia ne fast frequency response fii batere ne mframa afuw mu denam ancillary service gua ahorow so. Eduu afe 2024 no, nneɛma a ɛnyɛ -amammerɛ kwan so de maa frequency regulation 35%, na ɛtew ahotoso a wɔde to generators a wɔtaa de di dwuma so. Nanso, afe 2021 awɔw bere mu ahum no daa mmerɛwyɛ ahorow adi-wim tebea a emu yɛ den maa awo ntoatoaso so tew bere koro no ara mu na ɛmaa ahwehwɛde no kɔɔ soro sen nea ɛbɛma wɔatumi agyina pintinn.

Australia Grid-Ano aduru a Wɔhyehyɛ

South Australia nyaa 70% a ɛtumi kɔ mu wɔ afe 2024 mu, na ɛhia sɛ wɔfa akwan foforɔ a wɔfa so gyina pintinn. Hornsdale Power Reserve no ntrɛwmu a ɛkɔɔ 150 MW no kaa grid-forming tumi ho, a ɛma battery adwumayɛ a enni synchronous generators a ɛbɛn hɔ.

Australia Ahoɔden Guadiɛ sohwɛfoɔ no yɛɛ gua foforɔ a ɛma nneɛma gyina pintinn, tuaa nneɛma ho ka maa inertia ne nhyehyɛeɛ ahoɔden dwumadie. Saa sikasɛm nhyehyɛe yi maa wɔde mfiridwuma a ɛma ahoɔden-ma ɛyɛ den no dii dwuma ntɛmntɛm bere a wɔregyae fango adwumayɛbea ahorow no. Eduu afe 2024 no, South Australia kuraa ahotoso mu ɛmfa ho sɛ na awo ntoatoaso a ɛkɔ so bere koro mu kakraa bi wɔ bere a wɔyɛ foforo kɛse mu no.

Akwankyerɛ ne Mfiridwuma a Ɛreba

Grid stability solutions kɔ so nya nkɔsoɔ berɛ a renewable penetration kɔ soro na mfiridwuma foforɔ nyin.

Hydrogen ahoɔden a wɔkora so ma bere tenten-gyinabea mmoa a ɛboro battery tumi so. Electrolyzers dan anyinam ahoɔden a ɛboro so a wotumi yɛ no foforo ma ɛbɛyɛ hydrogen wɔ bere a ɛboro so mu. Fuel cells anaa hydrogen turbines san yɛ anyinam ahoɔden bere a ɛho ayɛ na, na ɛma wonya nneɛma a wɔde sie wɔ bere bi mu a batere ntumi mfa mma wɔ sikasɛm mu. Europa adwumayɛbea ahorow pii ayɛ nhyehyɛe sɛ wɔde hydrogen akorae bɛka abom ansa na afe 2026-2028 adu.

Kar-to-grid (V2G) mfiridwuma de anyinam ahoɔden kar batere di dwuma ma grid no gyina pintinn. Sɛ wɔde nkannyan a ɛfata ma a, EV ɔpepem pii a wɔde asi hɔ no betumi abom de frequency regulation ne voltage support tumi kɛse ama. Nkɔmmɔbɔ a ɛwɔTumi a Wɔde Yɛ Bateremfiridwuma mu nkɔso-mfitiaseɛ no wɔyɛɛ maa anyinam ahoɔden kar-a ɛwɔ grid storage applications no ma tumi a wɔde di dwuma mprenu-ba baabi a EV batere betumi adi akwantuo ne grid stabilization ahiadeɛ nyinaa ho dwuma. Pilot nhyehyɛe ahorow kyerɛ mfiridwuma mu mfaso-asɛnnennen no fa gua ne nhyehyɛe ahorow a wɔbɛhyehyɛ a ɛtua kar wuranom ka yiye bere a ɛbɔ batere akwahosan ho ban.

Superconducting magnetic energy storage (SMES) nhyehyɛe ma ultra-fast tumi injection ma bere tiaa mu pintinn. Saa mfiri yi sie ahoɔden wɔ magnetic field mu, na ɛma no gyae wɔ milisekɔn kakraa bi mu bere a basabasayɛ rekɔ so no. Bere a ne bo yɛ den no, SMES da ne ho adi sɛ ɛsom bo wɔ mmeae a ɛho hia a ɛfa grid nkitahodi ho a ɛwɔ baabi a ahoɔden a ɛgyina pintinn no yɛ teateaa.

Nneɛma a ɛkɔ anim ma tumi ɛlɛtrɔnik adwumayɛ tu mpɔn. Silicon carbide ne gallium nitride semiconductors ma inverters tumi yɛ adwuma yiye, switching ahoɔhare ntɛmntɛm, na ɛyɛ hyew ho nhyehyɛe pa. Saa su ahorow yi ma ahoɔden a wɔde hwɛ sɛnea nneɛma gyina pintinn no yɛ kɛse bere a ɛtew nnwinnade kɛse ne ɛka so no.

Quantum kɔmputa dwumadie betumi asakra grid optimization. Mfiridwuma mu nsɛnnennen a ɛwɔ sɛ wɔbɛma nneɛma mpempem pii a wɔakyekyɛ no ayɛ papa wɔ bere ankasa-mu no boro kɔmputa ahoɔden a wɔtaa de di dwuma no so. Quantum algorithms betumi adi ɔhaw ahorow yi ho dwuma ntɛmntɛm, na ama wɔatumi ayɛ stability management a ɛyɛ nwonwa bere a grids reyɛ den kɛse no.

Nsɛm a Wɔtaa Bisa

Dɛn na ɛba bere a grid stability di nkogu no?

Grid stability huammɔdi da adi sɛ frequency anaa voltage deviations a ɛboro ahobammɔ anohyeto so, a ebetumi ama mfiri asɛe na cascading outages aba. Ahobammɔ nhyehyɛe ahorow no ankasa twa mmeae a ɛka no mu na amma asɛe kɛse, na ɛde anyinam ahoɔden a ɛtɔ. Sanba betumi agye nnɔnhwerew anaa nna pii a egyina sɛnea huammɔdi no mu yɛ den so, efisɛ ɛsɛ sɛ adwumayɛfo de ahwɛyiye san de ahoɔden san-ma afã horow no mu den bere a wɔhwɛ so gyina pintinn no. 2003 Atifi Apuei anyinam ahoɔden a ɛtɔe no kyerɛɛ sɛnea instability cascades-a transmission line huammɔdi trɛwee denam control a ɛnsɛ so, na awiei koraa no ɛkaa nnipa ɔpepem 50 wɔ U.S. aman awotwe ne Canada mu.

So ahoɔden a wɔyɛ no foforo a wɔde di dwuma no betumi agyina pintinn te sɛ nea wɔde fa pɛtro a efi abo mu di dwuma no?

Yiw, ahoɔden a wɔyɛ no foforo a wɔde di dwuma no betumi ne fossil fuel grid no agyina pintinn anaasɛ aboro so bere a wɔde mfiridwuma a ɛfata ahyɛ mu no. Battery a wɔkora so, synthetic inertia systems, ne grid management a ɛkɔ akyiri ma stability services a wɔtaa de generators a ɛkyinkyini de ma. California daa saa tumi yi adi wɔ afe 2024 mu, ɛde ahoɔden a ɛho tew 100% yɛɛ adwuma wɔ nnafua 60% mu bere a ɛkura ahotosoɔ mu. Nea ɛho hia ne sɛ wɔde stability infrastructure a ɛdɔɔso-batere, grid-forming inverters, ne control systems-ka awo ntoatoaso a wɔyɛ no foforo ho. Nhwehwɛmu ahorow a efi Ɔman Ahoɔden a Wɔyɛ Foforo Nhwehwɛmubea no si so dua sɛ ahoɔden a wɔyɛ no foforo betumi ama nnwuma a ɛbɛma nneɛma agyina pintinn "a ebetumi ayɛ nea ɛnte sɛ biribiara a ɛwɔ grid so mprempren" bere a wɔayɛ no yiye no.

Ɔkwan bɛn so na batere ahoɔden a wɔde sie no ma grid no gyina pintinn?

Batere ahoɔden a wɔkora so nhyehyɛe ahorow ma ahoɔden a ɛyɛ den no yɛ kɛse denam akwan horow pii a ɛyɛ adwuma wɔ bere ahorow mu so. Sɛnea ɛbɛyɛ a frequency gyina pintinn no, battery yɛ wɔn ade wɔ milisekɔn 20-100 mu de hyɛ mu anaasɛ ɛtwetwe ahoɔden, ɛyɛ ntɛmntɛm koraa sen generators a wɔtaa de di dwuma a egye sikani 5-10. Sɛnea ɛbɛyɛ a voltage no gyina pintinn no, battery ma reactive power support, na ɛkura voltage levels a ɛfata wɔ network no nyinaa mu. Wɔ ahoɔden a wɔde di dwuma ho no, batere sie awo ntoatoaso a wɔyɛ no foforo a ɛboro so wɔ bere a -ahwehwɛde sua mu na wɔtow gu wɔ bere a ɛdɔɔso sen biara mu, na ɛma nneɛma a wɔde ma ne nea wɔhwehwɛ a ɛnkari pɛ no yɛ mmerɛw. Hornsdale Power Reserve a ɛwɔ Australia no daa saa tumi ahorow yi adi, na ɛmaa grid frequency no yɛɛ den wɔ milisekɔn 140 mu bere a fango adwumayɛbea bi dii huammɔ-a esiw anyinam ahoɔden a ebetumi atɔ a ɛbɛka adetɔfo mpempem pii ano.

Dɛn nti na inertia a wɔatew so ho hia ma grid no a ɛbɛkɔ so agyina pintinn?

Inertia gyina hɔ ma ahoɔden a ɛkyinkyini a wɔakora so wɔ generators a twitwiw a ɛko tia frequency nsakrae a ɛba ara kwa. Sɛ generator bi kɔ offline a, inertia ma frequency a ɛkɔ fam no brɛ ase, na ɛma bere ma control systems de yɛ reserves adwuma. Low{2}}inertia grids nya frequency nsakraeɛ a ɛyɛ ntɛm-a ɛbɛtumi akɔ fam afiri 60 Hz akɔ 59.5 Hz wɔ sekan baako ase sene 5{12}}10 seconds. Saa nsakrae a ɛba ntɛmntɛm yi twa ahobammɔ mfiri ne nhyehyɛe ahorow a wɔde di dwuma a wɔayɛ ama mmuae a ɛyɛ brɛoo no mpoa. Nhwehwɛmu kyerɛ sɛ sɛ wɔde ahoɔden a wɔyɛ no foforo besi awo ntoatoaso a ɛkɔ so bere koro mu 40% ananmu a, ebetumi atew inertia so 60%, na ama nsakrae a ɛba mpɛn dodow a ɛba bere a basabasayɛ reba no abu abɔ ho abiɛsa. Synthetic inertia nhyehyɛe ahorow brɛ saa asɛm yi ase denam ɛlɛtrɔnik a wɔde suasua frequency-stabilizing suban a honam fam ade a ɛkyinkyini no yɛ no so.

Ɔkwan a Wɔfa so Kɔ Anim

Grid a ɛgyina pintinn no gyina hɔ ma mfiridwuma mu nsɛnnennen a ɛho hia paa wɔ wiase nyinaa ahoɔden nsakraeɛ no mu baako. Tumi a wotumi de ho to so a wɔbɛkɔ so akura mu yiye bere a wɔredan akɔ nneɛma a wɔyɛ no foforo so no hwehwɛ sɛ wɔbɔ mmɔden a wɔayɛ biako wɔ mfiridwuma nkɔso, gua nhyehyɛe, ne mmara nhyehyɛe ahorow nyinaa mu.

Mfiridwuma mu ano aduru no wɔ hɔ na ɛkɔ so nya nkɔso. Battery, synthetic inertia, grid-forming inverters, ne advanced controls ma stability services a ɛne atetesɛm akwan yɛ pɛ anaasɛ eye sen saa. Ɛka so tew bere a deployment scales-battery bo kɔɔ fam 90% wɔ mfe du a atwam no mu, na ɛsakra sikasɛm mu nkɔso.

Ɛsɛ sɛ gua so nhyehyɛe ahorow dannan na ama wɔabu nnwuma a ɛma nneɛma gyina pintinn no sɛ ɛsom bo yiye. Amanneɛ kwan so ahoɔden-gua nkutoo ntua nneɛma a wɔde ma wɔ frequency regulation, voltage support, ne inertia a wɔde ma no ho ka sɛnea ɛfata. California, Texas, ne Australia yɛɛ gua so nneɛma foforo a etua ntoboa a ɛma nneɛma gyina pintinn ho ka pefee, na ɛkanyan mfiridwuma a ɛfata a wɔde di dwuma.

Mmara nhyehyeɛ hwehwɛ sɛ wɔyɛ foforɔ na ama wɔatumi agye gyinabea foforɔ a ɛbɛma wɔatumi agyina pintinn. Grid codes a wɔakyerɛw ama synchronous generators hia nsakraeɛ de akyerɛ adwumayɛ ahwehwɛdeɛ ma inverter-based resources. Ɛsɛ sɛ nkitahodi nhyehyɛe ahorow no hwɛ nhyehyɛe no ahoɔden ne nkɛntɛnso a ɛwɔ pintinn mu, ɛnyɛ awo ntoatoaso tumi nkutoo.

Nsakrae no hwehwɛ sɛ wɔde sika kɛse gu mu nanso ɛde mfaso kɛse ba sen sɛnea ɛbɛkɔ so agyina pintinn. Petrol a efi abo mu a wɔtew so no ma mframa a ɛma wim yɛ hyew a wɔtow gu no so tew, na edi nneɛma a ɛde wim nsakrae ba no ho dwuma. Nneɛma a wɔkora so a ɛkɔ anim ne sɛnea wɔyɛ nsakrae no ma wotumi kɔ nneɛma a wɔyɛ no foforo kɛse mu, na ɛma decarbonization yɛ ntɛmntɛm. Nhwehwɛmu ne tumidi a wɔama anya nkɔso no ma grid ahorow a ɛyɛ den kɛse a wɔasiesie no yiye sɛ wobedi wim tebea a emu yɛ den ho dwuma.

Grid a ɛgyina pintinn wɔ bere a wɔtumi yɛ foforɔ no yɛ soronko koraa wɔ atetesɛm akwan no ho, nanso ɛda so ara tumi yɛ denam nhyehyɛeɛ a ɛfata, sika a wɔde bɛto mu, ne mfiridwuma a wɔde bedi dwuma so. Adanse a ɛfiri mpɔtam a ɛdi kan no kyerɛ sɛ ahoɔden a ɛho tew ne tumi a wɔtumi de ho to so nyɛ botaeɛ a ɛbɔ abira-wɔyɛ botaeɛ a ɛka bom a ɛhwehwɛ sɛ wɔsusu ho sɛ wɔka bom.