"Air Charging Treasure" creates 10 billion -level "capital storage capitals" Feicheng salt cavity energy storage to make wind power photovoltaic more "scenery"

Feicheng compressed air storage power station

Popular Network · Poster Journalist He Hui Guo Yu Tai'an reported

In a farmland in the Tai'an Fat Urban Economic Development Zone, there is an inconspicuous courtyard. The courtyard is the first set of salt -compressed air storage power stations in the country's salt pores. Essence On the basis of the first phase of 10 MW Demonstration Power Station, the 300 MW project of the second phase is about to start construction. According to the plan, Feicheng in the future will rely on salt resources to build a Gigan -tile salt energy storage base to provide necessary peak -regulating supporting facilities for the development of wind power and photovoltaic industry in Shandong and even North China, create a tens of billions of energy storage industries and the future "storage storage storage industry and the future" storage storage industry The capital of energy. "

Wind power light installation machine scale nationwide in the country's second Shandong urgently needs oversized "charging treasure"

As the only new and old kinetic energy conversion experimental zone in the country, Shandong Province naturally strives for the development of the new energy industry. The Opinions of the State Council's "State Council's Opinions on Supporting Shandong Deepening and Deepening and Deepening the Transformation of Old and Old Powers Promoting Green Low -Carbon High -quality Development" mentioned that "supporting Shandong's strong development of renewable energy ... Construction of large -scale wind power photovoltaic bases" and so on.

The natural existence between the peak of wind power and photovoltaic power generation and the peak of production of production is different. As a result, some of the electricity can be discarded, which is commonly known as "abandoning the wind and abandoning the light." With the acceleration of the development of clean energy in recent years, it is not uncommon for "abandoning the wind and abandonment" in various places. Taking 2020 as an example, data from the National New Energy Consumption Monitoring and Early Warning Center shows that the country abandoned wind power of 16.61 billion kilowatt -hours, and the abandoned photovoltaic volume was 5.26 billion kilowatt -hours.

In order to master the first -hand data and laws of "abandoning the wind and the light", Dong Biao, deputy director of the China Merchants Bureau of Tai'an Fat City Economic Development Zone during the Spring Festival holiday in 2021, gave up his vacation and went to a new energy power generation company in Feicheng to investigate. The results of the survey are surprising: 7 days during the Spring Festival holiday alone, the company's two wind farms and a photovoltaic power plant "abandoned the wind and the light" in Feicheng reached 9 million kilowatt -hours.

To store temporary new energy power, it requires a large number of "charging treasures". Therefore, the energy storage industry has become more and more necessary supporting industries for wind and photovoltaic power generation. In recent years, many places across the country have been actively studying energy storage devices and developing energy storage industries. In many provinces, it has explicitly stipulated that the amount of light-vitality installed machines must be equipped with 10%-20%energy storage facilities.

The wind power and photovoltaic industries in Shandong Province have developed rapidly and huge scale, but insufficient power adjustment and energy storage capacity. According to the website information of the Shandong Provincial Energy Bureau: As of the first half of this year, the province's wind power and photovoltaic power generation machines reached 56.915 million kilowatts, and the scale of installation ranked second in the country. However, at the same time, the Shandong Power System lacks flexible regulatory power supply such as conventional hydropower and burning machines. Insufficient peak adjustment capabilities and relatively single methods have also restricted the large -scale, high proportion, and high -quality development of scenery projects.

Therefore, on August 30 this year, the "Shandong Province Wind and Power Power Power Power Project Co -Networking Security Guidance Opinions (Trial)" issued by the Shandong Provincial Energy Administration on August 30 of this year focused on the proportion of energy storage capacity allocation as the best priority for the grid of the landscape project; For market -oriented projects that have implemented construction conditions, it is qualified for grid -connected qualifications through competition, and priority supports projects with high energy storage capacity. The "Policy Interpretation" released together further clarifies: priority supports projects that allocate large independent energy storage power stations; energy storage facilities shall not be grid -up than the time limit of the landscape project, and the project that cannot be implemented in accordance with the promise standards will not be connected.

"Shandong Wind and Photovoltaic Power Generation Project Coashing Guidance Opinions (Trial)" policy interpretation

Underground "Air Charging Treasure" scientific and technological content is full of 300 MW project plan to be put into production next year

The demand for energy storage projects in Shandong Province is very large, but the available resources are limited. The more mature technology pump storage power stations have certain requirements for terrain and water resources. Both aspects of Shandong do not have an advantage; while flywheel energy storage has a large area and high cost, and the fire requirements are relatively high. Essence In contrast, the advantages of large -scale energy storage scale, low cost, long life, small area, and high safety, and high safety, coupled with the rich underground salt hole resources of Feicheng, have become a highlight of the Shandong energy storage industry.

The unique creepity of salt hole makes it a natural energy storage tank. Even if the cavity produces cracks, after the natural mineral salt is melted and solidified, the crack will soon heal itself, which makes the salt hole have good confinement and self -healing. Dong Biao, deputy director of the China Merchants Bureau of Feicheng Economic Development Zone, said that during the early stage of geological survey, the research team of the Chinese Academy of Sciences entered 3 million cubic meters of high -pressure air in Yanxue. Keeping at 11.32 MPa, it proves that Feicheng's salt hole is very good.

"We buy low -cost electricity during the trough period from the power network, or the" abandoned wind and light "caused by insufficient utilization of new energy. During the process, the thermal energy in the air was replaced, stored in the heat storage system, and finally formed the normal temperature high -pressure air in the salt hole. "Weng Kangqiang, a business manager of China Storage National Energy (Beijing) Technology Co., Ltd. introduced to reporters Speaking when the system.

The power generation process is exactly the opposite of the power storage process. It releases the temperature and high -pressure gases from the rock acupoint to promote the rotation of the expander to form a process similar to the mouth of the mouth. The expansion of high -voltage air is a process of heat absorption. At this time, the thermal energy in the heat storage system is just released, forming a high -voltage and room temperature air reassessment to drive the expander to power the power grid, so that the entire system will have higher power generation efficiency. In the process of releasing the high -voltage gas gas storage of traditional compressed air. In order to avoid air expansion and heat, heat, cooling and cooling affects the operating efficiency of the machine and equipment, a part of the natural gas must be added to the expander. This increases the cost and increases carbon emissions. Electric conversion efficiency is only 40%-50%. Weng Kangqiang particularly emphasized that the application of the heat -storage and insulation device enables this advanced compressed air energy storage system to completely get rid of natural gas, effectively reduce costs and reduce carbon emissions, and increase electricity -electricity conversion efficiency to more than 60%. System technology And performance is internationally leading.

"Feicheng Yanxue compressed air storage energy storage power adjustment power station is officially connected to power generation, which can realize the functions of peak adjustment, phase adjustment, rotation backup, emergency response, black startup and other functions." Weng Kangqiang said that this advanced compressed air storage system Among them, the surface compressor system, expansion system, and cold heat and exchange system are independently developed and produced by the Institute of Engineering Thermal Physics of the Chinese Academy of Sciences, and have complete independent intellectual property rights.

Feicheng compressed air storage power station signaling the sand table (the gas tank in the picture is replaced with salt)

On September 23, 2021, the demonstration project of 10 MW salt compressed air storage power stations in the first phase of 10 MW salt hole was successfully grid -connected in Feicheng, becoming the first salt energy storage project in China to achieve grid -connected power generation. The installed capacity of the second phase of the project is 300 MW. It is planned to start around October this year. In December 2023, it was selected as the first major technical equipment project in the national energy field in 2021, and the 2022 energy storage demonstration project of Shandong Province And Shandong Province's major infrastructure project in 2022.

After the salt ore is collected, the empty ore is also the size of the resource Gigabawa level.

After a long -term salt mine mining, the local area of ​​Feicheng also began to seriously think about subsequent development issues. Multi -party contacted, the relevant departments of Fei City found Yang Chun and Academician of the Institute of Wuhan Rock Litality of the Chinese Academy of Sciences, and reached the intention of cooperation. As soon as Wuhan was unlocked in Wuhan in May 2020, Yang Chun and Academician sent research teams to Feicheng. After 14 months of survey, the research team carried out a series of surveys and experiments such as geological structure analysis, dense water and air, passing, testing, soaking water testing, and collapse testing.

In July 2021, the Institute of Wuhan Rock and Lower of the Chinese Academy of Sciences held an academic conference for Feicheng Yanxue, and invited a number of experts to study underground space to discuss academic discussions on the survey of the salt hole in Licheng Shuangkou. After fierce discussion, the meeting finally came to the conclusion that "the underground salt space space formed by the dual -mouth of the Dawenkou Basin in Shandong Fei City has the conditions for storage of gas storage".

In order to accelerate the progress of production, in the later period of the research team's test, the relevant departments of Fei City's contact with the purchase of power generation equipment have already entered the market simultaneously. Just 2 months after the academic conference was held, on September 23, 2021, the 10 MW compressed air storage power station of Feicheng sent the first power to the power grid, becoming the country's first salt hole compressed air storage power station successfully grid to put into operation.

Dong Biao, deputy director of the China Merchants Bureau of Feicheng Economic Development Zone, said that the total area of ​​the salt mining area in the development zone is about 25 square kilometers, and the reserves have been proven about 5 billion tons. There are currently 4 large -scale salt -making enterprises in the park. The horizontal dual -pore -pairing well is used. After a period of mining, the underground salt hole will form a spindle -shaped cavity. 400,000 cubic meters.

Taking the first phase of 10 MW salt acupoint compressed air storage power stations for grid -connected power generation as an example, only a pair of salt cavity capacity was used. This pair of salt acupoints are about 400,000 cubic meters, and the second phase can be expanded to 300 MW's installed capacity. Such a salt hole currently has 46 pairs in the Fat City Economic Development Zone, which can meet the construction of salt -hole energy storage power stations that can meet the Gigamia. With the continued mining of salt ore, new and larger salt cavity are still constantly forming, and more than 3 million cubic meters of underground salt space space is added each year.

Feicheng's mined underground salt hole is used as resources to develop again and becomes a treasure, and the development potential of the salt hole energy storage industry in the future is huge. In addition to compressed air storage energy, it can also be used for storage (natural) gas, hydrogen storage, etc., and has great development potential. Five natural gas long -distance transmission pipes such as Pingtai Line and Jining Line passed through the border of Feicheng, with an annual excessive gas volume of 29 billion cubic meters.

Dong Biao said that the development of the salt hole energy storage industry can effectively promote the extension of the salt industry chain, promote the transformation and upgrading of the traditional salt industry, improve the power of power grid, increase the proportion of renewable energy power generation, effectively help carbon extension Realization of peaks and carbon neutrality. At the same time, it can also drive the development of related industries such as gas storage, hydrogen storage, energy storage equipment manufacturing, and is expected to become the largest new energy industry base in North China.

At present, the Feicheng Economic Development Zone In order to quickly promote the development of the Yanxue Energy Storage Industrial Park and promote the industrial implementation as soon as possible, it has planned a 25 -square -kilometer salt energy storage industrial park. After all the projects are completed, the Giguan -level salt -hole energy storage base will be built to create a 10 billion -level energy storage industry and the future "energy storage capital".

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