水泥平屋頂

Cement flat roof

水泥平屋頂要求設計為上人屋面，這樣既能滿足光伏系統對屋面所產生的荷載要求，又方便后期光伏系統的維護工作。結合不同地區的緯度信息、光伏組件設計最佳傾角，可實現最佳發電量。

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，如果要在項目初期考慮增加光伏系統，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.

工商業光伏系統并網模式

Grid connection mode of industrial and commercial photovoltaic systems

并網模式分為自發自用、余電上網，全額上網和自發自用三種，其中自發自用、余電上網的并網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.

工商業光伏電站系統關鍵設備

Key equipment for industrial and commercial photovoltaic power station systems

工商業光伏電站系統關鍵設備包括光伏組件、逆變器、支架、支架、并網柜、線材等。工商業光伏電站分中壓及低壓并網，區分于大型工廠及小型廠房，大型工廠（中壓并網）、小型廠房（低壓并網），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-——

一線品牌供應鏈生態合作伙伴，多元化選擇

First tier brand supply chain ecological partners, diversified choices

組件作為光能轉換電能設備，根據安裝面積進行裝機容量計算，然后結合光伏組件技術參數進行組件規格選擇，考慮性價比因素，利用有限的面積提升裝機容量；系統最佳傾角近似于當地緯度角，或者根據屋頂結構，組件平行于屋頂坡度鋪設，使用角度測量儀可測量傾角。

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——

適當超配，選用合適參數的逆變器

Proper configuration and selection of inverters with appropriate parameters

根據項目所在地情況、占地面積大小等因素確定好所使用的組件型號、數量后，需要以組件的總發電量和組件的短路電流、開路電壓等參數為選擇依據，選用合適參數的逆變器。

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：適當超配

Power Selection: Appropriate Overconfiguration

在實際的光伏發電過程中，由于建筑物遮擋、組件灰塵、不同天氣的輻照度波動等多種因素的影響，光伏組件的實際發電量會少于標準發電量。此時，若逆變器的容量與組件發電量保持1:1適配，會使逆變器長期處于非滿載運行的狀態，降低逆變器利用率，造成發電收益的損失。因此，在選擇逆變器的功率時，組件與逆變器的容配比范圍應該在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.