Chapter 1215 Energy Storage System!
Thanks to the new generation of electrolyzers developed by Huaxing Technology Group, the cost of hydrogen production per kilowatt of installed load has been reduced to one-eighth of the previous traditional electrolyzers, which is already a very amazing achievement.
However, Huaxing Technology Group is not satisfied with this, and is now developing a third-generation electrolyzer, which aims to convert a set of electrolyzers capable of holding 100 megawatts of electricity and converting a large amount of surplus wind energy into hydrogen storage. A single electrolyzer is enough to convert excess electricity from a large wind farm, and the cost of hydrogen production can be reduced to a minimum.
Yang Jie asked Huaxing Technology Group Co., Ltd. to invest in the construction of wind power plants and photovoltaic power plants in Qiongzhou Province, one is to demonstrate, and the other is to use the power resources of wind and photovoltaic power stations and the sufficient water resources in Qiongzhou Province to develop the technology of electrolysis to produce hydrogen and oxygen.
Huaxing Technology Group Co., Ltd. has invested more than one billion yuan to build the world's largest hydrogen and oxygen production plant, but it has not fully utilized the power resources of wind and photovoltaic power plants, and now the three workshops can produce 15,000 tons of hydrogen a year, and only consume one-eighth of the total installed capacity of wind power plants and photovoltaic power plants every year.
After visiting the informed oxygen production plant, Yang Jie also came to the liquid hydrogen and liquid oxygen preparation plant next to him.
With a maximum capacity of 50 tonnes per day, the plant is now the largest in Qiongzhou province.
The prepared liquid hydrogen is sent daily by liquid hydrogen tankers to the hydrogen fuel processing plant in the Puyang Development Zone for processing.
This special liquid hydrogen tanker has a volume of 65 cubic meters and can transport 4 tons of liquid hydrogen at a time.
Yang Jie also saw this kind of large liquid hydrogen liquid oxygen tanker being filled at the transportation station, and the liquid hydrogen and liquid oxygen factory here is also equipped with more than 30 large tankers, and now these liquid hydrogen and liquid oxygen tankers have to run non-stop every day.
In the afternoon, Yang Jie also came to the nearby large-scale photovoltaic power plant to visit, especially the large-scale energy storage device in the photovoltaic power plant.
The 300-megawatt photovoltaic power plant is equipped with a storage system of several hundred megawatts, which is currently the largest energy storage system in the world.
The reason why photovoltaic power plants used to be called "garbage" electricity is mainly because in the practical application of photovoltaic power generation, the power of photovoltaic power generation is affected by the intensity and angle of sunlight, and sunlight is strongly related to climate, season, and region, and even the changes in one day are extremely obvious and random.
Photovoltaic power plants peak at noon when the weather is at their best, and present a peak during the day, which can be said to be perfectly staggered with the peak of electricity consumption.
The domestic electricity load follows the rhythm of people's daily life, with the peak of work in the morning and afternoon, falling back at noon, and the load declining slowly after work due to household electricity and catering service industry electricity until the evening rest reaches the lowest point.
Photovoltaic power plants do not generate electricity at night, and they cannot meet the peak of electricity consumption at night.
At present, under the current use conditions in China, electricity is basically generated and used, that is, the electricity generated from the power plant is transmitted to the user through the power grid, and the electrical appliances are directly used, and the three major links of source-grid-load are passed, and there is no storage environment in the middle.
It is precisely this condition of use that requires real-time balance between power generation and consumption, and this randomness of photovoltaic power generation into the power grid will have an impact on the power grid.
Because the power grid requires stable and smooth input, photovoltaic power generation obviously cannot meet this requirement, and it will have an impact on the power grid after access, bringing potential insecurity factors.
The output power of the photovoltaic power station in the experimental use changes with the solar radiation intensity, and can only reach full load during the peak hours, and its equivalent full-load power generation hours are only 3 to 5 hours per day, and the utilization rate of transmission equipment is only between 20%.
In order to achieve a real-time balance between power generation and consumption, it is mainly by adjusting the output of hydropower and peaking power stations to adapt to the change of load.
For fuel cell power plants, peak shaving is relatively easy to do, because peak shaving can be achieved in a short time by adjusting the amount of hydrogen entering the plant.
If the output of the photovoltaic power station itself is just staggered with the peak power consumption, the direct connection to the power grid without adjustment will greatly increase the difficulty of peak regulation of the power grid.
In view of the defects of photovoltaic power stations, Huaxing Technology Group Co., Ltd. naturally offered the energy storage system.
The energy storage system for photovoltaic power plants is developed on the basis of high-power pulsed power supply technology system, mainly high-temperature superconducting flywheel energy storage system, and is also equipped with supercapacitor batteries and lithium battery modules.
Such an energy storage system Huaxing Technology Group Co., Ltd. also spent hundreds of millions of dollars to build, and successfully realized that the photovoltaic power station can realize the peak regulation function according to the electricity load and smoothly output power resources.
Similarly, the wind power plant invested and built by Huaxing Technology Group in Qiongzhou Province is also equipped with energy storage systems.
Wind power generation has the characteristics of intermittent, and the offshore wind farm in Qiongzhou Province is characterized by small wind during the day and high wind power at night, which can be said to be a more perfect miss to the peak of electricity consumption.
If there is no energy storage system, especially in power plants, the wind turbines can only be stopped in the second half of the night when the wind is at its strongest.
To this end, the wind power plant invested and built by Huaxing Technology Group Company in Qiongzhou Province is equipped with a larger set of energy storage system, which stores the incoming calls from the wind turbine at night and releases them through the energy storage system during the day to achieve stable power output.
Huaxing Technology Group Co., Ltd. previously developed energy storage system technology, mainly using chemical battery energy storage technology, which can achieve millisecond-level adjustment response speed, which is suitable for smooth wind and photovoltaic intermittent output, which requires the needs of small and medium-sized power stations.
In fact, the benefit of this energy storage system for peak shaving and valley filling is not very good, mainly because the cost of this system is still very high, and the number of cycles is not ideal.
However, in recent years, Huaxing Technology Group Co., Ltd. has matured in the technology of high-power pulse power supply, especially after mastering the technology of high-temperature superconducting flywheel energy storage system.
Although the price of the megawatt-level high-temperature superconducting flywheel energy storage system launched by Huaxing Technology Group is in the tens of millions, in fact, the service life of this system is very long, and the cost of use is very low.
Yang Jie: Therefore, in order to cultivate this industry, the company is also the first to use a large number of energy storage systems in the photovoltaic power stations and wind power stations invested and built by Huaxing Technology Group Company.
It is precisely because of this, Huaxing Technology Group Co., Ltd. in wind power stations and photovoltaic power stations to provide customers with a complete set of technical solutions and turnkey projects, although it is more expensive, but can solve the actual technical problems of these new energy for customers, and obtain stable income.