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離網(wǎng)系統(tǒng)工作模式

返回列表 來(lái)源：古瑞瓦特發(fā)布日期： 2022.12.23 瀏覽次數(shù)：

蓄電池充電也有四種方式可選擇 ，如果選擇用市電給蓄電池充電，應(yīng)注意到效率會(huì)降低，因?yàn)槭须娊o蓄電池充電后再放出來(lái)，會(huì)有一定的電量損耗，通常離網(wǎng)逆變器充放電的效率約為90%，因此會(huì)有10%左右的電量損耗。

1）光伏優(yōu)先：光伏優(yōu)先給電池充電，只有當(dāng)沒(méi)有光伏時(shí)，市電才給電池充電，這種模式適合于市電電價(jià)比較貴，對(duì)供電要求不是特別高的用戶使用。

2）市電優(yōu)先：市電優(yōu)先給電池充電，只有當(dāng)沒(méi)有市電時(shí)，光伏才給電池充電。這種模式適合于市電電價(jià)較便宜但經(jīng)常停電的場(chǎng)景。

3）市電和光伏同時(shí)充電：這種模式適合市電電價(jià)不高，對(duì)供電要求比較高的用戶使用。

4）光伏獨(dú)充：無(wú)論有沒(méi)有市電，只用光伏充電。這種模式適合市電電價(jià)特別高，對(duì)供電要求不是很高的用戶使用。

以上四種工作模式都是在光伏和市電都有的情況下可選擇，如果沒(méi)有市電互補(bǔ)，逆變器只有一種工作模式，那就是光伏獨(dú)充模式。

Battery charging also has four ways to choose, if you choose to use the mains to charge the battery, it should be noted that the efficiency will be reduced, because the mains to charge the battery after release, there will be a certain amount of power loss, usually off the grid inverter charging and discharging efficiency is about 90%, so there will be about 10% of the power loss.

1) Photovoltaic priority: photovoltaic priority to battery charging, only when there is no photovoltaic, the battery will be charged by the mains. This mode is suitable for the utility price is relatively expensive, and the power supply requirements are not particularly high.

2) Mains priority: Mains priority to charge the battery, only when there is no mains, photovoltaic power to charge the battery. This model is suitable for the scenario where the mains electricity price is cheaper but there are frequent power outages.

3) Simultaneous charging of mains and PV: This mode is suitable for users with low mains price and high power supply requirements.

4) Photovoltaic sole charge: with or without mains power, only photovoltaic charge is used. This mode is suitable for the utility price is particularly high, and the demand for power supply is not very high.

The above four working modes are optional in the case of photovoltaic and mains power. If there is no mains complementary inverter, there is only one working mode, that is, photovoltaic single-charge mode.