Abstract
Except for pumped storage, other existing electric energy storage technologies are difficult to achieve large-capacity energy storage and not easy to simultaneously meet the requirements in terms of site selection, cost, efficiency, and response. For this end, this paper combines the advantages of maglev technology and vacuum technology, proposes a new type of mechanical large-capacity energy storage technology which is vacuum pipeline maglev energy storage. Based on the idea of vacuum pipeline maglev energy storage technology, we have constructed a case system of vacuum pipeline magnetic maglev energy storage technology. The key technical parameters of the energy storage system, such as the maglev train’s weight ratio and speed per hour, the mode of levitation and guidance, the car-track structure, the type and size of the vacuum pipeline, the type of the motor, the process of charging with acceleration, the process of no-load with uniform-speed and the process of generating electricity with deceleration were studied. On this basis, the energy storage capacity and cost of the vacuum pipeline maglev energy storage system were obtained through analysis. By comparing the energy storage capacity and cost of Fengning Pumped Storage Power Station in China, the advantages of vacuum pipeline maglev energy storage technology in economy and technology were verified. Finally, based on the technical characteristics of the vacuum pipeline maglev energy storage system, we analyzed its broad applications in renewable energy power consumption, optimization and upgrade of distribution network structure, urban emergency power supply and pulse power supply.
Highlights
Paper on promoting new energy development released by the State Grid of China, by the end of 2017, China’s new energy generation capacity accounts for 52% of the country’s new power generation capacity, the cumulative installed capacity of new energy power generation accounts for 17% of the national installed capacity of power supply, with a year-onyear growth of 31%
Vacuum pipeline maglev energy storage technology is a kind of mechanical inertial energy storage, its charge and discharge power can reached 2 × 107kW, and the pulse power supply based on vacuum pipeline maglev energy storage technology just has the characteristics of high power density, fast response, short discharge time, etc. which can provide a new technical idea for the development of pulse power
We summarized that vacuum pipeline maglev energy storage technology compared with pumped storage is equivalent in energy storage capacity and energy storage efficiency, and has obvious advantages in economy, location and response speed
Summary
With the depletion of fossil energy and the worsening of environmental problems, the whole world has vigorously developed and utilized renewable energy. In order to effectively solve the problem of large-scale gridconnection and consumption of renewable energy power, and to alleviate the increasingly serious phenomenon of abandoning wind and light in China, energy storage technology has been rapidly developed and applied based on the West to East Power Transmission Project. Vacuum pipeline maglev energy storage technology can effectively integrate a variety of advantages, such as large capacity, easy location and fast response.
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