Following the Light | China Construction Science and Technology's BIPV photovoltaic project successfully connected to the grid

February 27

Built and operated by China Construction Science and Technology

China Construction Environmental Protection Materials BIPV (Building Integrated Photovoltaics)

3.9MW photovoltaic projectSuccessfully connected to the grid

(hereinafter referred to as the project)

Officially began providing clean energy to the park and the city power grid

 

The project is located in Baiyun District, Guangzhou, and is implemented byChina Construction Science and Technology using a contract energy management model，3.9MW BIPV distributed photovoltaic power generation system was installed on the roofs of the concrete mixing station and prefabricated component production plant in the park. Annually,It can provide about 4 million kWh of clean energy to the park and the city power grid，helping China Construction's new construction circular economy industrial park to achieve energy saving and emission reduction, and creating the industry's first low-carbon operation industrial park.

 

 

Science and Technology Tips

What are BAPV and BIPV?

 

 

BAPV (Building Attached Photovoltaics):

Photovoltaic modules are attached to buildings, such as roofs and walls. The main function is power generation, without changing or weakening the original function of the building. The initial investment is lower, installation is simple, and maintenance is convenient, but the energy efficiency is relatively low, and the overall appearance is poor. It is suitable for the renovation and upgrading of old buildings, etc.

BIPV (Building Integrated Photovoltaics):

Solar power generation products are directly integrated into buildings, such as roofs, skylights, and exterior walls. They not only provide electricity but also enhance the aesthetics and functionality of the building. The initial investment is higher, and installation and maintenance are complex. However, in the long run, because the photovoltaic modules are designed and constructed synchronously with the building and directly integrated into the building, the overall appearance is strong, sunlight can be used more effectively, energy generation efficiency is higher, and the economic benefits are significant. It is suitable for newly built or large-scale renovation building scenarios.

The difference of one word, but a world of difference.BAPV is more about the photovoltaic transformation of buildings, and photovoltaic modules are attached to buildings through photovoltaic brackets and other support structures. The building function is not affected by the photovoltaic system, but to a certain extent, it increases the load requirements of the building roof. BIPV is directly part of the building. In addition to power generation, photovoltaic modules can also play roles such as light transmission, wind and rain protection, and heat insulation, which is truly "building-integrated photovoltaics".

 

Innovative design solves construction problems

 

For the park's concrete industry, there is a lot of dust

Accumulated dust will reduce the value of solar radiation

Seriously affecting the power generation efficiency of components

The project team usesFrameless double-sided double-glass monocrystalline silicon components

While increasing the power generation area

Reduce the ash accumulation rate of photovoltaic components

Can achieve 30 years of high-efficiency power generation

In addition, high-strength tempered glass is used on the surface of the photovoltaic components

While ensuring the waterproof, fireproof, windproof, and heat preservation performance of the roof

Reduce the design of maintenance channels

Maintenance personnel can directly step on and clean

Effectively improve maintenance convenience and economy

 

△Double-sided double-glass high-efficiency monocrystalline silicon BIPV components

 

UsingMetal tile 360° meshing installationTechnology

Replace the traditional nailing installation method

Reduce damage to the roof

Effectively avoid water leakage problems

Extend the service life of the roof

Using a new integrated pressure block clamp

Compared with the traditional separate installation mode of pressure blocks and clamps

Component installation efficiency increased by 10%

 

 

Digital empowerment for efficient operation and maintenance of power stations

 

Photovoltaic power stations are not just about connecting to the grid.

To obtain higher power generation income

Professional operation and management is also required

The project usesIndependently developed by China Construction Science and Technology

Green energy intelligent management platform

Can monitor the power generation efficiency of components in real time

Monthly statistics of cumulative power generation in four peak and valley periods

Intelligent early warning of the operating status of photovoltaic panels, inverters, and other major equipment

Solve the operational disadvantages of large workload of manual inspection and cumbersome statistics

Early detection and early repair of faults

Real-time monitoring of operating efficiency

Achieve"Unmanned duty, few people on duty"Operation and maintenance management model

Combined with intelligent operation and maintenance equipment such as photovoltaic cleaning robots

Power station comprehensive operation and maintenance efficiency increased by 30%

 

△Photovoltaic cleaning robot

 

 

Green energy helps create a low-carbon park

 

Annual power generation of the projectAbout 4 million kWh

Equivalent to saving 1211 tons of standard coal

Reduce carbon dioxide emissions by 3320.7 tons

Plant 215,000 trees annually

Adopt self-generation and self-consumption

Operate in a surplus power grid-connected mode

 

 

 

△BIPV photovoltaic power generation system

 

With the full use of photovoltaic green electricity

Annual power generation accounts for the industrial park41.9% of annual electricity consumption

Achieve a win-win situation of "sunshine benefits" and "low-carbon production"
Future energy storage space will also be reserved

Continuously increase investment in the green upgrading of the industrial park

 

 

Previously, China Construction Science and Technology has successively invested, constructed, and operated in Shenzhen and HuizhouChina Construction Steel Structure Guangdong Factory Photovoltaic and Energy Storage Power Station, Shenzhen Design Building Distributed Photovoltaic and Contract Energy Management ProjectThe operating efficiency meets expectations.

 

In the future, China Construction Science and Technology will actively respond to the national "dual carbon" strategy, continue to take photovoltaic power station investment, construction, operation, and BIPV products as its business direction, comprehensively apply BAPV, BIPV, light storage, and flexible integrated technologies, expand the integrated green energy business of photovoltaic power stations from investment, construction, and products to operation and maintenance, provide customers with a continuous supply of green energy, and make greater contributions to achieving enterprise innovation and development and the "dual carbon" goals.

Source: China Construction Science and Technology