水泥平屋頂

Cement flat roof

水泥平屋頂要求設(shè)計(jì)為上人屋面，這樣既能滿足光伏系統(tǒng)對(duì)屋面所產(chǎn)生的荷載要求，又方便后期光伏系統(tǒng)的維護(hù)工作。結(jié)合不同地區(qū)的緯度信息、光伏組件設(shè)計(jì)最佳傾角，可實(shí)現(xiàn)最佳發(fā)電量。

The cement flat roof is required to be designed as an accessible roof, which can not only meet the load requirements of the photovoltaic system on the roof, but also facilitate the maintenance work of the photovoltaic system in the later stage. By combining latitude information from different regions and designing the optimal tilt angle of photovoltaic modules, the optimal power generation can be achieved.

彩鋼瓦屋頂

Color steel tile roof

由于廠房屋面多為非上人屋面，如果要在項(xiàng)目初期考慮增加光伏系統(tǒng)，建議加大廠房屋面活荷載，取值最好大于0.7KN/㎡。

Due to the fact that the roofs of the factory buildings are mostly non accessible, if we want to consider adding a photovoltaic system in the early stages of the project, it is recommended to increase the live load on the factory building roof, with a value preferably greater than 0.7KN/m2.

工商業(yè)光伏系統(tǒng)并網(wǎng)模式

Grid connection mode of industrial and commercial photovoltaic systems

并網(wǎng)模式分為自發(fā)自用、余電上網(wǎng)，全額上網(wǎng)和自發(fā)自用三種，其中自發(fā)自用、余電上網(wǎng)的并網(wǎng)模式適合白天用電量較大的廠房，自用比例越高，成本回收周期越短。

The grid connection mode can be divided into three types: spontaneous self use, surplus electricity grid connection, full grid connection, and spontaneous self use. Among them, the grid connection mode of spontaneous self use and surplus electricity grid connection is suitable for factories with high daytime electricity consumption. The higher the proportion of self use, the shorter the cost recovery cycle.

工商業(yè)光伏電站系統(tǒng)關(guān)鍵設(shè)備

Key equipment for industrial and commercial photovoltaic power station systems

工商業(yè)光伏電站系統(tǒng)關(guān)鍵設(shè)備包括光伏組件、逆變器、支架、支架、并網(wǎng)柜、線材等。工商業(yè)光伏電站分中壓及低壓并網(wǎng)，區(qū)分于大型工廠及小型廠房，大型工廠（中壓并網(wǎng)）、小型廠房（低壓并網(wǎng)），配置也各有不同。

The key equipment of industrial and commercial photovoltaic power station systems includes photovoltaic modules, inverters, brackets, brackets, grid connected cabinets, wires, etc. Industrial and commercial photovoltaic power stations are divided into medium voltage and low voltage grid connected, distinguished from large factories and small factories. Large factories (medium voltage grid connected) and small factories (low voltage grid connected) also have different configurations.

組件-——

Components-——

一線品牌供應(yīng)鏈生態(tài)合作伙伴，多元化選擇

First tier brand supply chain ecological partners, diversified choices

組件作為光能轉(zhuǎn)換電能設(shè)備，根據(jù)安裝面積進(jìn)行裝機(jī)容量計(jì)算，然后結(jié)合光伏組件技術(shù)參數(shù)進(jìn)行組件規(guī)格選擇，考慮性價(jià)比因素，利用有限的面積提升裝機(jī)容量；系統(tǒng)最佳傾角近似于當(dāng)?shù)鼐暥冉牵蛘吒鶕?jù)屋頂結(jié)構(gòu)，組件平行于屋頂坡度鋪設(shè)，使用角度測(cè)量?jī)x可測(cè)量?jī)A角。

As a device for converting solar energy into electrical energy, the installed capacity of the module is calculated based on the installation area, and then the module specifications are selected in combination with the technical parameters of the photovoltaic module, considering cost-effectiveness factors and using limited area to increase the installed capacity; The optimal inclination angle of the system is approximately the local latitude angle, or according to the roof structure, the components are laid parallel to the roof slope, and the inclination angle can be measured using an angle measuring instrument.

逆變器——

Inverter——

適當(dāng)超配，選用合適參數(shù)的逆變器

Proper configuration and selection of inverters with appropriate parameters

根據(jù)項(xiàng)目所在地情況、占地面積大小等因素確定好所使用的組件型號(hào)、數(shù)量后，需要以組件的總發(fā)電量和組件的短路電流、開(kāi)路電壓等參數(shù)為選擇依據(jù)，選用合適參數(shù)的逆變器。

After determining the model and quantity of components to be used based on factors such as the location of the project and the size of the occupied area, it is necessary to choose an inverter with appropriate parameters based on the total power generation of the components and the parameters such as short-circuit current and open circuit voltage of the components.

功率選擇：適當(dāng)超配

Power Selection: Appropriate Overconfiguration

在實(shí)際的光伏發(fā)電過(guò)程中，由于建筑物遮擋、組件灰塵、不同天氣的輻照度波動(dòng)等多種因素的影響，光伏組件的實(shí)際發(fā)電量會(huì)少于標(biāo)準(zhǔn)發(fā)電量。此時(shí)，若逆變器的容量與組件發(fā)電量保持1:1適配，會(huì)使逆變器長(zhǎng)期處于非滿載運(yùn)行的狀態(tài)，降低逆變器利用率，造成發(fā)電收益的損失。因此，在選擇逆變器的功率時(shí)，組件與逆變器的容配比范圍應(yīng)該在1.1-1.3之間。

In the actual photovoltaic power generation process, due to various factors such as building obstruction, component dust, and fluctuations in irradiance under different weather conditions, the actual power generation of photovoltaic modules will be less than the standard power generation. At this point, if the capacity of the inverter is 1:1 compatible with the power generation of the components, it will keep the inverter in a non full load operation state for a long time, reduce the utilization rate of the inverter, and cause a loss of power generation revenue. Therefore, when selecting the power of the inverter, the capacitance ratio range between the components and the inverter should be between 1.1 and 1.3. Please refer to the table below; At the same time, the inverter needs to have overload capability.