As the lifeblood of the national economy, energy is an important engine of economic growth, and also a field with strong demand for carbon emission reduction under the background of "dual carbon". Promoting the adjustment of energy structure is of great significance to energy saving and carbon reduction in China's manufacturing industry.
Policies are increased and clean energy application scenarios are implemented
At present, China's clean energy mainly includes solar energy, wind power and so on. In the guidance on Energy Work in 2022, it is proposed to vigorously develop wind power photovoltaic.
Specifically, it plans to build a new energy supply and consumption system based on large scenery bases, supported by clean, efficient, advanced and energy-saving coal power plants around them, and supported by stable, safe and reliable UHV transmission and transformation lines. We will improve the distribution of offshore wind power, carry out demonstration projects to build offshore wind power, and steadily promote the construction of offshore wind power bases.
Actively promote the construction of water scenery complementary base. We will continue to implement the development and construction of distributed photovoltaic on the roof of the whole county and strengthen the supervision of implementation. According to local conditions, the organization of "thousands of townships and villages wind control action" and "thousands of households mu light action". Make full use of land and roof resources in oil and gas mining areas, industrial areas and industrial parks to develop distributed wind power and photovoltaic. We will improve the mechanism for ensuring the consumption of renewable energy electricity, release the weight of responsibility for the consumption of renewable energy by all provinces in 2022, and improve the green electricity certificate system for renewable energy generation.
In addition to wind power photovoltaic, China's exploration of other types of energy has not stopped.
The sun and moon shine together, tide and light complementary innovative application mode
Tidal power stations, as the name suggests, are both tidal and photovoltaic power stations.
Tidal power stations can store seawater in reservoirs during high tide, release seawater during low tide, and use the difference between high and low tide to push the turbine to turn, and then make the generator generate electricity, which is tidal power generation.
Photovoltaic power generation (PV), which directly converts sunlight into electricity by shining it on silicon-based materials, generates an electric current, also known as the photogenerating volt effect. Its power generation capacity is directly related to light conditions, usually concentrated during the full daylight hours.
But these two kinds of plants have some deficiencies, such as general evening tide power station built in haikou harbour, usually long depth of dam construction difficulties, home building and electromechanical investment is large, the cost is high, moreover tidal power station is low head big flow form of electricity generation, therefore, the size of the turbine is large, consumption of large amount of steel, in and out of the water the structure complex; However, photovoltaic power stations tend to have small capacity and low power generation, and the cost of photovoltaic systems is also relatively high. Photovoltaic power generation is greatly affected by seasonal day and night and weather conditions.
So is there a way to generate electricity that has the advantages of both tidal and photovoltaic?
The answer is yes, it is tide light complementary photovoltaic power station.
On May 30, China's first tide-light complementary photovoltaic power station, Zhejiang Wenling Tide-light complementary intelligent power station of Longyuan Power, realized full capacity grid-connected power generation. This is China's first solar and lunar tidal energy complementary development of innovative applications.
Photovoltaic panels are laid on the water surface of tidal power station reservoir area to generate photovoltaic power using local light resources, forming a complementary power station with tidal power generation, and creating a new mode of coordinated operation of tidal and photovoltaic power generation. In addition to improving the overall electricity output, it can effectively suppress the fluctuations of photovoltaic power generation by controlling the time period and power of tidal power generation, improve the power output quality of the power station, and maximize the development and utilization of Marine resources.
The extension of photovoltaic + development
In recent years, "PHOTOVOLTAIC +" symbiotic development has attracted more and more attention from all walks of life. The National Development and Reform Commission, the National Energy Administration issued the "about promoting the implementation of new energy, high quality new era notice is put forward, in the" encourage the development of 'scenery fishing fusion, wind power, photovoltaic power generation project area and improve the resource utilization efficiency ", "research on ecological restoration of new energy sources such as photovoltaic sand project design, construction and operational standards".
China's first wave light complementary photovoltaic power station connected to the grid, make full use of the energy storage system energy charge and discharge displacement, and the power of millisecond fast response characteristics, make the transition from "to adapt to the power grid operation" effective for "support grid operation", to build a new power system, promoting industrial adjustment of energy structure has very important significance.