Skip to content

Grid Connected Solar PV Electric Power Systems Basics

Comprehensive introduction to solar pv systems, grid connected solar system and electric power systems related knowledge

  • Home
electric-power-network-composition

Isolated island generated power grid environment

  • Solar Fundamentals
October 11, 2022October 11, 2022 admin

According to the capacity and control mode of the grid-connected photovoltaic power generation system, the grid environment where the system is located can be divided […]

Continue reading
Reactive power demand and compensation of power grid system

Reactive power demand and compensation of power grid system

  • Solar Fundamentals
October 9, 2022October 10, 2022 admin

1.Standard requirement of reactive power for power quality of grid The national standard GB12325-90 “Allowable Deviation of Power Quality Supply Voltage” has specified the principle […]

Continue reading
maximum power tracking

Implementation of maximum power tracking

  • Knowledge of solar cells
October 9, 2022October 10, 2022 admin

According to the admittance increment algorithm, the S function in MATLAB environment is written. Its input is the PV output voltage and current, and its […]

Continue reading
maximum power

Principle of maximum power tracking

  • Solar Fundamentals
October 9, 2022October 10, 2022 admin

According to the PV output volt-ampere characteristic curve, there must be dP/dV=0 at the maximum power point, where P is the PV output power and […]

Continue reading
solar panel output characteristic curve

The common maximum power tracking method

  • Solar Fundamentals
September 29, 2022October 10, 2022 admin

We know that when the sunshine intensity and ambient temperature change, the output voltage and current of photovoltaic cells change in a nonlinear relationship, and […]

Continue reading
Classification of grid connected photovoltaic systems

Classification of grid connected photovoltaic systems

  • Solar Fundamentals
September 28, 2022October 10, 2022 admin

Due to the above characteristics of Solar Power System, Solar Energy System can be classified according to different compositions and purposes of use. For example, […]

Continue reading
What structure is the sun made of

What structure is the sun made of?

  • Solar Fundamentals
September 20, 2022September 20, 2022 admin

The structure of the sun is far from clear. Spectral analysis shows that of the 109 elements that have been found on the earth, in […]

Continue reading
BIPV

Evaluation Criteria and Core Issues of BIPV Design

  • Photovoltaic system installation
September 13, 2022September 13, 2022 admin

Evaluation Criteria for BIPV DesignPhotovoltaic power generation systems can be integrated on buildings in an elegant and aesthetic way and thus become part of the […]

Continue reading
Introduction to BIPV

Introduction to BIPV

  • Solar Fundamentals
September 13, 2022September 13, 2022 admin

The basic concept of BIPV With the increasing interest in solar power generation, decentralized photovoltaic power generation systems are gradually gaining acceptance, and the commercialization […]

Continue reading
Nǐ bìxū yào zhīdào de-guānyú xùdiànchí shǐyòng yǔ wéihù zhōng de jǐ dà wèntí (1) xùdiànchí de xínghào shìbié gùdìng xíng xùdiànchí yòng sān gè bùfèn huò sì gè bùfèn biǎoshì, rú GG-360, dì yī gè G biǎoshì gùdìng xíng xùdiànchí, dì èr gè G biǎoshì guǎn shì zhèngjí bǎn,360 biǎoshì ān shí shù wèi 360A•h; yòu rú DG-232,D biǎoshì chē yòng de gùdìng xíng xùdiànchí,G biǎoshì tā de zhèngjí bǎn wèi guǎn shì de,232 biǎoshì shì 232A•h. Yídòng shì diànchí rú 3CJ-12,S biǎoshì dān tǐ diànchí gè shù wèi 3 gè, zé diànyā wèi 6V,CJ biǎoshì guījiāo xùdiànchí,12 biǎoshì ān shí shù wèi 12A.H; yòu rú 6CJ-180, jí biǎoshì yǒu 6 gè dān tǐ diànchí, diànyā wèi 12V,CJ biǎoshì guījiāo xùdiànchí,180 jí wèi 180A•h. Hái yǒu yīxiē qítā xínghào, rú 3-Q-12, jí wèi 6V, qǐdòng xíng diànchí (Q),12A•h;6-Q-180, jí wèi 12V, qǐdòng xíng diànchí (Q),180A•h;QA biǎoshì gàn hé shì qǐdòng xíng xùdiànchí;M biǎoshì mótuō chē yòng xùdiànchí, rú S-MA-12 jí wèi 6V,12A.H, gàn hé shì mótuō chē yòng xùdiànchí. (2) Xùdiànchí de chōngdiàn fāngshì ① héng liú chōngdiàn fǎ suǒwèi héng liú chōngdiàn fǎ, jiùshì zài chōngdiàn guòchéng zhōng chōngdiàn diànliú shǐzhōng bǎochí bù biàn de chōngdiàn fāngfǎ. Wèi bǎochí héng liú zé diànyuán de diànyā bìxū zhújiàn zēnggāo, bǎochí chōngdiàn diànliú bùzhì yīn xùdiànchí duān diànyā de shēng gāo ér jiǎn xiǎo. Cǐ fǎ de quēdiǎn shì chōngdiàn mòqí diànliú tài dà, diànnéng wúyì de xiāohào zài diànjiě shuǐshàng. ② Fēnjí héng liú chōngdiàn kāishǐyòng jiào dà de diànliú jìnxíng chōngdiàn (1/10 róngliàng de diànliú), jīngguò duàn shíjiān hòu gǎi yòng 1/20 róngliàng de diànliú chōngdiàn, mòqí diànliú kěyǐ gèng xiǎo yīxiē (rú 1/30 róngliàng de diànliú). Zhè zhǒng fāngfǎ chōngdiàn xiàolǜ gāo, duì xùdiànchí de shòumìng yǒu hǎochù, quēdiǎn shì yào bùduàn tiáojié diànliú zhí, bǐjiào máfan. ③ Héng yā chōngdiàn suǒwèi héng yā chōngdiàn fǎ jiùshì zài chōngdiàn guòchéng zhōng, chōngdiàn diànyā shǐzhōng bǎochí bù biàn de fāngfǎ. Cǐ fǎ kāishǐ shí diànliú hěn dà, chāoguò zhèngcháng de chōngdiàn diànliú, dàn suí diànchí duān diànyā de shàngshēng, chōngdiàn diànliú jiù zhújiàn jiǎn xiǎo, zuìhòu diànliú biàn dé hěn xiǎo, bù huì fāshēngguò chōng, kěyǐ bùyòng rén guǎn tā. Quēdiǎn shì kāishǐ shí diànliú tài dà, yào sǔnshāng jí bǎnhé shǐ huóxìng wùzhí tuōluò. Qìchē duì wǎngwǎng yòng zhè zhǒng fāngfǎ chōngdiàn, dàn tā bùnéng jìnxíng chū chōngdiàn hé qù liúsuān yán huà de chōngdiàn. ③ Màichōng chōngdiàn fǎyào tígāo xùdiànchí de chōngdiàn sùdù, yòu bù yǐngxiǎng diànchí de shòumìng hé xìngnéng, jiù yào zǐxì fēnxī diànchí de chōngdiàn guòchéng. Shǐ diànchí chōngdiàn màn de zhǔyào yuányīn shì: Diànchí zhōng yǒu nóng chà jí huà hé diàn huàxué jí huà cúnzài. Nóng chà jí huà shì yīnwèi huàxué zuòyòng zhōng de kuòsàn yùndòng hěn màn zàochéng de, lìngwài, yóuyú chōngdiàn guòchéng zhōng shuǐ de diànjiě shǐ H2 bāowéi fùjí,O2 bāowéile zhèngjí, cóng'ér tígāole diànjí diànwèi, zhè duì chōngdiàn bùlì, suǒyǐ yào shǐ chōngdiàn sùdù kuài jiù yào mónǐ diànchí zhōng de shíjì huàxué fǎnyìng guòchéng, shèfǎ xiāochú bù lìyú chōngdiàn de yīnsù, suǒyǐ jiù shèjìle màichōng chōngdiàn, qí bùzhòu shì: Zhèng màichōng chōngdiàn →qián xiē →fù màichōng shùnjiān fàngdiàn (fǎn chōng qù jí huà)→hòu xiē →zhèng màichōng chōngdiàn. Rúcǐ xúnhuán wǎngfù, fǎn xiàng màichōng shēndù yībān wèi chōngdiàn diànliú de 1.5~3 Bèi, màichōng kuāndù wèi 150~1000ms, qián xiē yǔ hòu xiē de shíjiān yuē wèi 25ms, quán guòchéng yòng jìsuànjī zìdòng kòngzhì. Shǐ yòng shàngshù de màichōng chōngdiàn jī, kěyǐ shǐ chōngdiàn xiàolǜ dà wéi tígāo. Yuánlái chū chōngdiàn shíjiān wèi 50~60h, xiànzài zhǐyào 5h; yuánlái bǔchōng chōngdiàn shíjiān shì 13h zuǒyòu, xiànzài zhǐyào 1h jí kě, érqiě màichōng chōngdiàn jiāshēnle fǎnyìng shēndù, shǐ xùdiànchí de róngliàng yǒu suǒ zēngjiā, bìngqiě qù liúsuān yán huà de xiàoguǒ jiào hǎo. Quēdiǎn shì chūqì lǜ gāo, duì huóxìng wùzhí de chōngshuā lì dà, shǐ huóxìng wùzhí róngyì tuōluò, yīdìng chéngdù shàng yǐngxiǎngle xùdiànchí de shòumìng. (3) Xīn diànchí de chū chōngdiàn xīn xùdiànchí huò xīn xiūfù de xùdiànchí chūcì chōngdiàn de hǎo huài, zhíjiē yǐngxiǎng tā de róngliàng de shòumìng, yīncǐ wùbì rènzhēn jìnxíng. Diànjiě yè liúsuān de xiāngduì mìdù yībān wèi 1.251.285, Tiān lěngle xiāngduì mìdù jiù piān dà xiē, dàn bùnéng suíbiàn chāoyuè fànwéi, yīnwèi zhèyàng xiāngduì mìdù de liúsuān dǎodiàn xìng zuì hǎo, bīngdiǎn wēndù dī, duì xùdiànchí de shòumìng yě hǎo. Jiā zhù diànjiě yè hòu yào jìng zhì 5~6h, dài wēndù dī yú 35℃shí zài jìnxíng chōngdiàn (diànjiě yè miàn yào gāo chū jí bǎn 15mm); chōngdiàn shí xùdiànchí de zhèng, fùjí yǔ chōngdiàn jī de zhèng, fùjí xiānglián, bùnéng jiē fǎn.(Yù liǎojiě gèng duō diànchí chōngdiàn zhùyì shìxiàng qǐng fǎngwèn tycorun.Com ) chōngdiàn guòchéng tōngcháng fēn liǎng gè jiēduàn, dì yī jiēduàn yòng C/10~C/15 diànliú chōngdiàn, dài duān diànyā dá 2.4V zuǒyòu, gǎi yòng C/20 huò C/30 chōngdiàn, xiāngduì mìdù hé diànyā liánxù 3h wěndìng bù biàn wéizhǐ, quánbù shíjiān yuē wèi 60h. Chōngdiàn guòchéng zhōng yīng jīngcháng cèliáng diànjiě yè wēndù, rú wēndù shàngshēng dào 40℃, yīng jiāng diànliú jiǎn bàn, rú wēndù jìxù shàngshēng, yīng lìjí tíngzhǐ chōngdiàn, bìng cǎiqǔ réngōng lěngquè, dài lěngquè dào 35℃yǐxià shí zài chōngdiàn chū chōngdiàn wánbì shí, rú diànjiě yè xiāngduì mìdù bùhé guīdìng, yìngyòng zhēng guǎn shuǐ huò xiāngduì mìdù wèi 1.2 De liúsuān diànjiě yè jìnxíng tiáozhěng, tiáozhěng hòu zài chōngdiàn 2h; rú xiāngduì mìdù réng bù fúhé guīdìng, yīng zài tiáozhěng, zài chōngdiàn 2h, zhízhì xiāngduì mìdù fúhé guīdìng wéizhǐ. Xīn diànchí dì yī cì chōngdiàn hòu wǎngwǎng dá bù dào édìng róngliàng, yīng jìnxíng chōng fàngdiàn xúnhuán, yòng 20h fàngdiàn, ránhòu zài chōngdiàn, jìn háng liǎng, sāncì xúnhuán. Xīn diànchí zhī suǒyǐ yào jìnxíng chōng fàngdiàn xúnhuán, qí mùdì shì shǐ xīn xùdiànchí zài chúcún shí jí bǎn shàng shēngchéng de PbSO4 quánbù zhuǎnhuà wéi huóxìng wùzhí, huīfùjí bǎn de duōkǒng xìng, gǎishàn jí bǎn yǔ diànjiě yè de jiēchù qíngkuàng, shǐ xùdiànchí nénggòu shūchū qí édìng róngliàng. Yīncǐ, zài yǒu tiáojiàn dì dìfāng, dōu yìngduì xīn xùdiànchí jìnxíng chōng fàngdiàn xúnhuán. Chū chōngdiàn shí zuì hǎo yòng xiǎo diànliú, yīnwèi xùdiànchí zài chúcún guòchéng zhōng, jí bǎn kěnéng yǒu yībùfèn liúhuà, shǐ nèi zǔ zēng dà, chōngdiàn shí yìyú guòrè. Yòng xiǎo diànliú chōngdiàn, bùjǐn kě shǐ huàxué fǎnyìng shēnrù jí bǎn nèibù, hái kě bìmiǎn wēndùguò gāo, bìng duì xiāochú liúhuà yǒu yīdìng de zuòyòng. Quèdìng xùdiànchí shìfǒu yǐjīng chōngzú diàn zhǔyào gēnjù sān gè xiànxiàng lái pànduàn: ① Xùdiànchí nèibù jīliè fàngchū dàliàng qìpào, diànjiě yè shì “fèiténg” zhuàngtài; ② xùdiànchí dāngè diànyā dádào 2.7V bìng bǎochí 3h bù biàn; ③ diànjiě yè xiāngduì mìdù dá zuìdà zhí, qiě 3h bù zài zēngjiā. Zhè shì yīnwèi suízhe chōngdiàn de jìnxíng, dāng dāngè diànchí de diànyā dádào 2.4V shí, qí jí bǎn shàng de PbSO4 jīhū dōu yǐ fēnbié zhuǎnbiàn wèi PbO2 hé hǎimián zhuàng Pb, rú zài jìxù chōngdiàn, jiù huì yǐnqǐ shuǐ de fēnjiě, chǎnshēng qīngqì hé yǎngqì yǐ qìpào de xíngshì jùliè fàngchū, xíngchéng “fèiténg” zhuàngtài. Yóuyú qīng lízǐ zài fùjí bǎn shàng yǔ diànzǐ jiéhé dé jiào màn, yúshì kàojìn fùjí bǎn chù jīcún yǒu dàliàng qīng lízǐ, shǐ diànjiě yè de jí bǎn zhíjiē chǎnshēngle 0.33V de diànwèi chā. Yīncǐ shǐ dāngè diànchí de duān diànyā shēng gāo dào 2.7V zuǒyòu, zài zé yóuyú jí bǎn shàng de liúsuān qiān yǐ quánbù zhuǎnhuà wánbì, yīncǐ diànjiě yè de xiāngduì mìdù yě jiù bù zài zēngjiā, zhè shí jiù biǎoshì xùdiànchí yǐjīng chōngzú diànle. Guījiāo xùdiànchí bù xū diào suān jiā suān, zhǔyào zhǎngwò chōngdiàn shíjiān hé guānchá diànyā. (4) Gàn hé xùdiànchí gàn hé xùdiànchí de zhǔyào tèxìng shì jí bǎn jùyǒu gàn hé diàn xìngnéng. Dàjiā zhīdào, zhèngjí bǎn de huóxìng wùzhí——PbO2 de huàxué huóxìng bǐjiào wěndìng, suǒyǐ, gàn hé xùdiànchí de zhèngjí bǎn hé diàn xìngnéng néng chángqí bǎochí, dànshì, fùjí bǎn shàng de huóxìng wùzhí——hǎimián zhuàng Pb de hé diàn xìngnéng jiù bùyì bǎochí, zhè shì yīnwèi hǎimián zhuàng qiān de biǎomiànjī dà, huàxué huóxìng gāo, hěn róngyì bèi kōngqì zhòng de yǎng suǒ yǎnghuà. Gàn hé xùdiànchí zài huàchéng gōngxù zhòng yào cǎiyòng fǎnfù chōngdiàn, fàngdiàn, shǐ huóxìng wùzhí de xíngchéng dádào shēnkè, chèdǐ, zhèng, fùjí bǎn jūn rúcǐ. Dàn fùjí bǎn chú cǐ zhī wài, hái yào jiějué yì yǎnghuà, nán bǎocún de wèntí, suǒyǐ zài shēngchǎn fù jí bǎn shí, qí zhòng yào jiārù shìliàng de fáng yǎnghuàjì, rú sōngxiāng,U-jīng jī,b-nài suān, tīngjī yìng zhī suān hé pā má chún suān děng zhǎng liàn zhīfángsuān, yángmáo zhī (dǎngùchún) hé gāo fēnzǐ zhī lèi de huàhéwù. (5) Xùdiànchí fàngdiàn diànliú yuè dà, wēndù yuè dī, xùdiànchí de róngliàng yuè xiǎo zhè shì yīnwèi diànliú yuè dà, huàxué fǎnyìng yuè kuài, jí bǎn biǎomiàn huóxìng wùzhí bùnéng cānjiā huàxué fǎnyìng, yīncǐ xùdiànchí shíjì shūchū de róngliàng jiù huì jiǎnshǎo. Rú édìng róngliàng wèi 90A·h de diànchí, zài diànjiě yè wēndù wèi 30℃de qíngkuàng xià, yǐ 270A(xiāngdāng yú 3 bèi de édìng róngliàng) de dà diànliú fàngdiàn, dào dāngè diànyā xiàjiàng dào 1.5V shí, zhǐ néng wéichí fàngdiàn 5min, zé cǐ shí suǒ shūchū de diànliàng (jí róngliàng) zhǐyǒu A·h, qí róngliàng jǐn wèi édìng róngliàng de 1/4. Wēndù yuè dī, xùdiànchí de róngliàng yuè xiǎo. Zhè shì yīnwèi diànjiě yè wēndù yuè dī, bùjǐn diànzǔ zēng dà érqiě diànjiě yè de niándù zēng dà, shǐ diànjiě yè shènrù jí bǎn nèi céng kùnnán, fàngdiàn shí jí bǎn nèi céng de huóxìng wùzhí bùnéng chōngfèn lìyòng, suǒyǐ shíjì shūchū de róngliàng yě huì jiǎnshǎo. Rú yǐ édìng róngliàng wèi 90A·h de xùdiànchí wéi lì, zài diànjiě yè wēndù wèi-18℃de qíngkuàng xià, yǐ 270A fàngdiàn, dào dāngè diànyā jiàng dào 1V shí, zhǐ néng wéichí fàngdiàn 2.5Min, zhè shí shíjì néng shūchū de diànliàng zhǐyǒu, jǐn wèi édìng róngliàng de 1/8. Yībān qíngkuàng xià, dāng diànjiě yè wēndù dī yú 30℃shí, wēndù měi jiàngdī 1℃, xiǎo diànchí fàngdiàn shí, xùdiànchí róngliàng yuē jiǎn xiǎo 1%, dà diànliú fàngdiàn shí, róngliàng yuē jiǎn xiǎo 2%.(1) Shì zhōng,U zài xiǎo diànliú fàngdiàn shí wèi 0.01, Zài dà diànliú fàngdiàn shí wèi 0.02, Suǒyǐ dōngtiān yòng qǐdòng jī qǐdòng fādòngjī shí, fàngdiàn diànliú jì dà, wēndù yòu dī, xùdiànchí róngliàng dàdà jiǎnshǎo, shǐ rén gǎnjué diànchí róngliàng bùzú. (6) Xùdiànchí de nèi zǔ xùdiànchí de nèi zǔ bāokuò jí bǎn diànzǔ, gé bǎn diànzǔ hé diànjiě yè diànzǔ, bìng suí chōngdiàn qíngkuàng hé wēndù děng yīnsù ér biàn. Rú chōngdiàn hòu nèi zǔ biàn xiǎo, fàngdiàn hòu nèi zǔ biàn dà; diànjiě yè wēndù gāo nèi zǔ jiǎn xiǎo, wēndù dī zé nèi zǔ zēng dà; xùdiànchí zhèngcháng shí nèi zǔ xiǎo, liúsuān yán huà shí nèi zǔ zēng dà. Yībān lái shuō, xùdiànchí de nèi zǔ jiào xiǎo, pǔtōng 5V xùdiànchí de nèi zǔ xiǎnzhù zēng dà, nèi zǔ guo dà de zhǔyào tèzhēng shì, chōngdiàn shí diànchí de diànyā gāo, diànjiě yè wēndù yě gāo; fàngdiàn shí diànyā dī, fàngdiàn róngliàng yě dī. Rú fà xiàn xùdiànchí nèi zǔ guo dà, yīng shǒuxiān jiǎnchá diànchí de jí bǎn shìfǒu liúhuà, ruòshì yóu liúhuà zàochéng de, zé yòng xiǎo diànliú cháng shíjiān chōngdiàn, xiāochú liúhuà; ruòshì hànjiē bùliáng yǐnqǐ de, zé yīng chóngxīn hàn láo. 展开 3,416 / 5,000 翻译结果 What you must know-several problems in the use and maintenance of batteries

What you must know-several problems in the use and maintenance of batteries

  • battery
July 21, 2022July 21, 2022 admin

(1) Type identification of the battery Fixed battery is represented by three parts or four parts, such as GG-360, the first G represents fixed battery, […]

Continue reading

Posts navigation

1 2 3 … 7 Next Posts»

Recent Posts

  • Isolated island generated power grid environment
  • Reactive power demand and compensation of power grid system
  • Implementation of maximum power tracking
  • Principle of maximum power tracking
  • The common maximum power tracking method

Categories

  • battery (1)
  • Inverter (4)
  • Inverter and other system components (5)
  • Knowledge of solar cells (8)
  • On-site evaluation of photovoltaic power system (4)
  • Operation and maintenance of grid-connected photovoltaic system (5)
  • Photovoltaic module (4)
  • Photovoltaic system installation (13)
  • Solar cell modules and photovoltaic arrays (2)
  • Solar Fundamentals (14)
  • Solar PV Electric Power Systems (2)

Tags

Basic structure of thin film solar cells Conductivity phenomenon electronic band structure Final inspection of photovoltaic system installation Grid-connected photovoltaic system integrity Grid connected system ground installation system Install photovoltaic modules insulator Inverter Maintenance of photovoltaic array Maintenance of the inverter Manufacturing technology of crystalline silicon solar cell Metal n-type semiconductor Obstacles to photovoltaic technology Off-grid system p-type semiconductor Photoelectric effect Photovoltaic Photovoltaic cell Photovoltaic combiner box Photovoltaic modules Photovoltaic system Photovoltaic system cable path and required length Photovoltaic system cable specifications Photovoltaic system output power Photovoltaic system test Public grid access system PV array PV array installation PV array troubleshooting Renewable Energy Resistivity of a semiconductor Risk assessment of installing photovoltaic system Safety measures for installing photovoltaic systems Solar cells solar energy generation solar power solar radiation Solar resources Structure and working principle of solar cell module Trial operation of photovoltaic system Troubleshooting for low system performance Troubleshooting of the inverter
Through this website, you will be able to learn about solar pv systems, grid connected solar system and electric power systems.