It will take time for the hottest seawater pumping

2022-08-08
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It still takes time for the seawater pumped storage power station to land.

the results of the resource census of seawater pumped storage power station released by the National Energy Administration recently show that what preparations should be made before the installation of seawater pumped storage adhesive peel strength tester in China? Jinan Shijin provides you with the correct method today: there are 238 resource sites, including 174 offshore sites and 64 island sites, with a total installed capacity of 42.083 million KW

"in the future, seawater pumped storage power stations will be studied in the form of demonstration projects." An insider involved in the study of seawater pumped storage told this newspaper

the research is forward-looking

"seawater pumped storage power station is a new type of pumped storage power station, which has research value, and the relevant research is forward-looking." The above insiders said to 3 With regard to the preparation technology of orthopedic implants, only Japan has built seawater pumped storage power stations in the world, and Japan has only built one power station, which is one of the reasons why China wants to study seawater pumped storage power stations

some industry experts believe that the purpose of building the demonstration project of seawater pumped storage power station is to fill the gap in this field in China and improve the island's multi energy complementary and integrated energy utilization mode

Zhang boting, Deputy Secretary General of the China Society of hydropower engineering, who participated in the research group of seawater pumped storage power stations, said in an interview with this newspaper that the purpose of building seawater pumped storage demonstration power stations is to explore the experience of construction and unit corrosion resistance. "When the problem of large-scale energy storage cannot be solved in the future, prepare for the development of pumped storage on the island."

however, some insiders believe that the prospect of seawater pumping and storage is dim, and it is of little significance to spend a lot of money on research. Most of the people interviewed expressed optimism about the development of seawater storage power stations. Donghai securities had predicted that the opportunities for seawater pumped storage were developing rapidly. According to the 7000 yuan investment per kilowatt of pumped storage, the investment of 42.083 million kilowatts of installed resources is close to 300 billion yuan

a person in the energy industry said that the biggest advantage of using seawater to build pumped storage power stations is that there is no need to build a pool. "In particular, most nuclear power plants are located in coastal areas. In addition to the large population and large demand for electricity, it is of great significance to build seawater pumped storage near large-scale power sources along the coast."

however, some researchers believe that the conditions of seawater pumped storage are worse than those of land pumped storage. Power transmission channels have been erected on islands close to the mainland through submarine cables and other forms. In terms of demand, there are few people on islands far from the mainland, and the power demand is not large, so the scale of seawater pumped storage power stations far away is generally small

first order or Luonan

it is understood that the specific address of the demonstration project of seawater pumped storage power station is still being screened. "At first, Zhejiang Province was recommended, and after investigation, it was found that Zhejiang was not suitable for construction." The above industry insiders believe that "Fujian or Guangdong may be the location of the pilot demonstration project of seawater pumped storage power station. No matter where you choose, you can accumulate experience in construction, operation, management, technology and other aspects."

Fujian or Guangdong was chosen because the census results released by the national energy administration showed that the places with the most abundant seawater pumped storage resources were mainly concentrated in Guangdong, Zhejiang and Fujian, accounting for 27.2%, 21.8% and 25.1% of the total resources of seawater pumped storage power stations respectively; Liaoning, Shandong and Hainan account for 2.9%, 5.6% and 13.4% of the total resources respectively; There are relatively few resource sites in Jiangsu and Guangxi

"I have participated in the investigation of seawater pumped storage power stations in Guangdong, Zhejiang and Fujian provinces, and the final location has not been determined." Zhang boting told this newspaper, "according to the construction plan of the demonstration project of seawater pumped storage power station, South China and China will build one respectively."

at present, there is no news about the construction of seawater pumped storage power station in China. The first domestic seawater pumped storage test is likely to fall to the south

among the eight typical resource sites announced by the national energy administration, Guangdong accounts for three, namely Shantou Nan'ao Island, Zhuhai Wanshan island and Jiangmen Shangchuan Island, with installed capacity of 50000 kW, 20000 kW and 30000 kW respectively, and regulated storage capacity of 690000 m3, 420000 m3 and 580000 m3 respectively

many problems need to be solved

among the eight typical resource stations, the static investment of Zhejiang Zhoushan Longtan seawater pumped storage power station is the least, requiring 221 million yuan. The largest investment is Zhoushan qingtianwan pumped storage power station, with a static investment of 1.248 billion yuan. Among the three stations in Guangdong, Shantou Nan'ao pumped storage power station has the largest static investment, requiring 1.12 billion yuan

"the first problem to be faced in the construction of seawater pumped storage power stations in the future is the investment cost. For seawater pumped storage power stations of the same scale, if the island drop is large, the unit will be small and the investment will be small; if the island drop is small, the investment will be large." The above insiders said to

"for the construction of experimental seawater pumped storage power stations, the state will allocate part of the funds, leaving the enterprises to raise their own funds." Zhang boting said

next, we need to study how to prevent the watercourse or turbine from being corroded, which is also the biggest problem to be solved in the construction of seawater pumped storage power station. There are two aspects of corrosion. One is chemical corrosion. Salt in seawater is corrosive to pumped storage power station units; The other is the corrosion of marine organisms, which are adsorbed on the surface of the unit and proliferate continuously. It can be divided into wedge-shaped fixture (referring to the fixture with inclined locking principle structure), counter clamp fixture (referring to the fixture with single-sided or double-sided rib top tightening principle structure), winding fixture (referring to the fixture with sample locked by winding), eccentric fixture (referring to the fixture with eccentric locking principle structure), lever fixture (referring to the fixture with lever force amplification principle structure), shoulder fixture (referring to the fixture suitable for shoulder sample) Bolt type fixture (refers to the fixture suitable for testing rib strength of bolts, screws, studs, etc.) The 9 "1 BMW I3, whose body structure and frame are completely made of carbon fiber reinforced plastic, attracted many people to visit the 0 ° peeling fixture (it refers to that it is suitable for two samples to be hung. These corrosion will affect the power generation and pumping efficiency of the seawater pumped storage power station.

in addition, it is also necessary to ensure that the water outlet still plays a stable role under the conditions of strong winds and waves. Zhang boting said that to build the seawater pumped storage power station, it is necessary to solve a series of key problems, including technical research and development, equipment research and development, the impact of marine organisms and coral reefs on the unit

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