As you know, photovoltaic power generation is installed on the roof of industrial plants, warehouses, large public buildings, office buildings, hotels and other buildings to generate electricity, not only to obtain power generation income, but also to allow the building to further achieve natural lighting, solar heating, ventilation, insulation and other building energy-saving features, but not all roofs are suitable for the installation of photovoltaic power generation, today I will come to you to sort out Today, I will give you a list of considerations for the installation of photovoltaic on the roof of the enterprise.

I. Feasibility analysis

Before considering the installation of plant roof photovoltaic, you need to conduct a feasibility analysis. The main issues include property rights, the selection of the location of the roof, the determination of the inclination and orientation, as well as the assessment of shadow problems. The feasibility analysis ensures that the characteristics of the roof match the performance of the panels in order to achieve higher power generation benefits. The following are the specific matters of the feasibility analysis:

1. Property rights issues

A prominent issue for commercial and industrial rooftop installation of photovoltaic power generation is the roof or site property rights, due to the long service life of photovoltaic power generation and high investment costs. The construction of photovoltaic power plants on sites or roofs with unclear property rights will create many uncertainties in the use and income of the power plant after completion. Therefore, in the construction of commercial and industrial power plants in the early must do a good job site property rights, static investment and operation and maintenance inputs, revenue distribution, risk bearing and a series of feasibility analysis, to develop a good practical solution.

2. Roof structure assessment

Before PV installation, the structure of the plant roof needs to be evaluated to ensure that it can withstand the weight and load of the PV system. This includes checking factors such as the strength, flatness and stability of the roof. If there are problems with the roof structure, it will need to be repaired or reinforced to ensure that it can safely carry the PV system.

3. Roof support

Building roof mainly has several kinds of color steel tiles, ceramic tiles, steel mix, etc. Color steel tiles are divided into upright locking edge type, nibble type, snap type, and fixed piece connection type.

The first two need special adapter, the last two need to punch fixed; ceramic tile roof can use special adapter, can also not be fixed with the roof, the use of self-weight and roof slope attached to it; steel mixed structure roof need to make bracket foundation, foundation and roof can be rooted or not, the key consideration roof waterproof, wind load resistance, roof design load and other factors.

4. Environmental factors

In the selection of bracket system, you also need to consider the local environmental factors, such as wind and snow, rainfall and other natural disasters. In order to protect the photovoltaic panels and bracket system, the bracket system with the characteristics of durability, snow and wind resistance, corrosion resistance and rust resistance should be selected according to the local environmental conditions. At the same time, the local wind speed, rainfall, snow depth and other factors need to be considered during the design and installation of the racking system to ensure that the racking system can operate stably under adverse weather conditions and minimize damage and maintenance costs.

II. Project budget

The installation of plant rooftop PV requires a certain amount of funding. The budget needs to consider the cost of PV panels, the price of framing and bracketing, and installation costs (such as construction fees, transportation costs, etc.), and also requires a detailed financial plan and risk management plan based on the size and scale of the project to ensure that the project's economic benefits are maximized.

III. Policies and environmental regulations

In order to promote the development of distributed photovoltaic, various places have introduced provincial, municipal and even county-level support policies. Project developers in advance of project development need to be familiar with these policies, as the current development of photovoltaic industry still needs government subsidies, the subsidies policy directly affects the distributed income, so the local policy of good distributed projects should be developed first.

IV. Construction plan

In the installation of photovoltaic panels, you should choose a professional company or construction team to perform the construction work. Before installing PV panels, measurement, survey and planning are needed to develop construction plans and carry out construction according to specifications to ensure system stability and safety.

V. Power distribution facilities and connection points

Power distribution equipment is one of the PV power plant selection of grid-connected program based on the main examination are:

1) plant transformer capacity, number, busbar, load ratio, etc;

2) the location of the meter in the plant area, bus bar specifications, switch specifications and models, etc;

3)whether the plant is equipped with an independent distribution room, whether the distribution equipment has a spare interval, and if not whether the busbar can be crimped;

4) giving priority to users with large total transformer capacity and large load ratio;

5) to check the capacity of the incoming main switch, considering the revenue issue, the output current of the photovoltaic power generation system should not be larger than the capacity of the household switch;

6)Consider the installation position of inverter and grid-connected cabinet with the principle of convenient and economical alignment.

VI. Maintenance and monitoring

Photovoltaic panels need regular maintenance, such as cleaning, waterproofing, reinforcement, etc. At the same time, electronic monitoring equipment needs to be installed to monitor and analyze the power output, power output and other indicators to identify and solve problems in a timely manner and improve system reliability and intelligence.

In short, plant roof photovoltaic must be based on regional characteristics, photovoltaic photovoltaic technology, policy environment and other factors, reasonable design, reasonable budget, careful construction, reasonable maintenance and monitoring, in order to effectively use solar energy resources, reduce costs for enterprises, improve economic efficiency and achieve sustainable development.