光伏并網(wǎng)發(fā)電系統(tǒng)是由光伏組件、電池方陣、匯流箱，逆變器，交流配電柜（并網(wǎng)柜）、變壓器等設(shè)備組成。其部分設(shè)備的作用是：

　　The photovoltaic grid connected power generation system is composed of photovoltaic modules, battery arrays, combiner boxes, inverters, AC distribution cabinets (grid connected cabinets), transformers and other equipment. The function of some of its devices is to:

　　光伏組件

　　Photovoltaic modules

　　在有光照（無(wú)論是太陽(yáng)光，還是其它發(fā)光體產(chǎn)生的光照）情況下，電池吸收光能，電池兩端出現(xiàn)異號(hào)電荷的積累，即產(chǎn)生“光生電壓”，這就是“光生伏特效應(yīng)”。在光生伏特效應(yīng)的作用下，太陽(yáng)能電池的兩端產(chǎn)生電動(dòng)勢(shì)，將光能轉(zhuǎn)換成電能，是能量轉(zhuǎn)換的器件。太陽(yáng)能電池一般為硅電池，分為單晶硅太陽(yáng)能電池，多晶硅太陽(yáng)能電池和非晶硅太陽(yáng)能電池三種。

　　In the presence of light (whether from the sun or other luminous sources), the battery absorbs light energy and accumulates opposite numbered charges at both ends, resulting in the generation of "photovoltaic voltage", which is known as the "photovoltaic effect". Under the action of the photovoltaic effect, the two ends of a solar cell generate electromotive force, which converts light energy into electrical energy, making it an energy conversion device. Solar cells are generally silicon cells, divided into three types: monocrystalline silicon solar cells, polycrystalline silicon solar cells, and amorphous silicon solar cells.

　　組件方陣

　　Component array

　　單塊的光伏組件不能夠形成足夠的電壓用來(lái)發(fā)電，必須有一定數(shù)量的光伏組件進(jìn)行串聯(lián)，形成足夠的電壓。這個(gè)電壓一般在200~1000V。

　　A single photovoltaic module cannot generate sufficient voltage for power generation, and a certain number of photovoltaic modules must be connected in series to form sufficient voltage. This voltage is usually between 200 and 1000V.

　　光伏直流匯流箱

　　Photovoltaic DC combiner box

　　在太陽(yáng)能光伏發(fā)電系統(tǒng)中，為了減少太陽(yáng)能光伏電池陣列與逆變器之間的連線使用到匯流箱。用戶可以將一定數(shù)量、規(guī)格相同的光伏電池串聯(lián)起來(lái)，組成一個(gè)個(gè)光伏組串，然后再將若干個(gè)光伏組串并聯(lián)接入光伏匯流箱，為了提高系統(tǒng)的可靠性和實(shí)用性，在光伏防雷匯流箱里配置了光伏專用直流防雷模塊、直流熔斷器和斷路器等，還可以加裝監(jiān)控功能模塊方便用戶及時(shí)準(zhǔn)確的掌握光伏組件的工作情況，保證太陽(yáng)能光伏發(fā)電系統(tǒng)發(fā)揮最大功效。

　　In the solar photovoltaic power generation system, a combiner box is used to reduce the connection between the solar photovoltaic cell array and the inverter. Users can connect a certain number and specifications of photovoltaic cells in series to form photovoltaic strings, and then connect several photovoltaic strings in parallel to the photovoltaic combiner box. In order to improve the reliability and practicality of the system, photovoltaic dedicated DC lightning protection modules, DC fuses, circuit breakers, etc. are configured in the photovoltaic lightning protection combiner box. Monitoring function modules can also be installed to facilitate users to timely and accurately grasp the working condition of photovoltaic modules, ensuring that the solar photovoltaic power generation system can play its maximum role.

　　逆變器

　　inverter

　　是將直流電轉(zhuǎn)換成交流電的設(shè)備。由于光伏組件方陣是直流電源，而負(fù)載是交流負(fù)載時(shí)，逆變器是必不可少的。逆變器按運(yùn)行方式，可分為獨(dú)立運(yùn)行逆變器和并網(wǎng)逆變器。獨(dú)立運(yùn)行逆變器用于獨(dú)立運(yùn)行的太陽(yáng)能電池發(fā)電系統(tǒng)，為獨(dú)立負(fù)載供電。并網(wǎng)逆變器是用于并網(wǎng)運(yùn)行的太陽(yáng)能電池發(fā)電系統(tǒng)。

　　It is a device that converts direct current into alternating current. Due to the fact that the photovoltaic module array is a DC power source and the load is an AC load, an inverter is essential. Inverters can be divided into independent operating inverters and grid connected inverters according to their operating modes. The independent operation inverter is used for a solar cell power generation system that operates independently and supplies power to independent loads. Grid connected inverter is a solar cell power generation system used for grid connected operation.

　　交流配電柜（并網(wǎng)柜）

　　AC distribution cabinet (grid connected cabinet)

　　作為光伏電站的總出口存在于光伏系統(tǒng)中，是連接光伏電站和電網(wǎng)的配電裝置，其主要作用是作為光伏發(fā)電系統(tǒng)與電網(wǎng)的分界點(diǎn)。對(duì)于低壓并網(wǎng)的光伏電站，光伏并網(wǎng)柜中還可以加裝計(jì)量、保護(hù)等功能器件。

　　As the total export of photovoltaic power plants, it exists in the photovoltaic system and is a distribution device that connects the photovoltaic power plant and the power grid. Its main function is to serve as the boundary point between the photovoltaic power generation system and the power grid. For low-voltage grid connected photovoltaic power plants, metering, protection and other functional devices can also be installed in the photovoltaic grid cabinet.

　　監(jiān)控系統(tǒng)

　　monitoring system

　　光伏發(fā)電系統(tǒng)，在維護(hù)過(guò)程中可以配置監(jiān)控系統(tǒng)，有助于提高運(yùn)行的可靠性，及早進(jìn)行維護(hù)工作，提高發(fā)電的效率。變壓器變壓器一般都是升壓變壓器，它將光伏逆變器所逆變出來(lái)的交流電，通過(guò)升壓達(dá)到并網(wǎng)電網(wǎng)的電壓等級(jí)。

　　The photovoltaic power generation system can be equipped with a monitoring system during maintenance, which helps to improve the reliability of operation, carry out maintenance work early, and improve the efficiency of power generation. Transformers are generally boost transformers, which convert the AC power inverted by photovoltaic inverters into voltage levels that are connected to the grid through boosting.

　　變壓器

　　transformer

　　應(yīng)該具有隔離功能。一般變壓器位于并網(wǎng)交流柜的前段（從電流流向上看，在光伏系統(tǒng)中，電流是從逆變器流向電網(wǎng)）

　　It should have isolation function. Generally, the transformer is located in the front section of the grid connected AC cabinet (from the perspective of current flow, in a photovoltaic system, current flows from the inverter to the grid)

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