Energy storage is one of the main problems bothering the power system. The present research situation of energy storage is outlined. The working principles, development process and technical features of pumped storage, compressed air energy storage, flywheel energy storage, electromagnetic energy storage and chemical energy storage are described in detail. The application prospect of energy storage is proposed.
Objectives: At present, affected by the coronavirus pandemic, the global industrial chain and logistics chain have been hit, and the international trade security and facilitation order have encountered unprecedented challenges. As a supervisory authority for the entry and exit of a country, customs plays a pivotal role in global economic exchanges. The customs management system is also considered one of the core issues affecting international trade, and the customs clearance link is the crucial link in the ongoing international trade. Customs clearance efficiency, import and export procedures, import and export time, import and export costs, and transparency of border management and other issues related to trade time and trade costs are closely related to customs. In the WTO’s trade facilitation agreement, 90 per cent of the content is directly related to customs. At the same time, certain specific powers possessed by the customs as a government department also make it shoulder the obligations of the times entrusted by the sovereign state, this includes safeguarding normal international trade and combating the smuggling of tobacco and frozen products. Achieving adequate supervision and promoting trade facilitation are the main contradictions and challenges faced by customs in various countries under economic globalization. Facing the new international environmental changes, the customs of all countries need to spare no effort to overcome barriers and join together.
This article discusses and analyzes the technical strengths and weaknesses of the green power generation that can be used for distributed system (power generation) power generation, for instance, solar power generation, wind power, hydrogen fuel cells, biomass power generation, and small gas turbines. The key to the discussion is to apply the technical distributed power generation of solar power stations. In addition, it also discussed the use of "focusing solar power generation high-temperature solar thermal power conversion system software" technical completion of distributed system power distribution. Low-cost, high-temperature solar thermal power generation is selected as the power generation solution medium, the power generation is technically low consumption and high-efficiency, the volume and power generation methods are conveniently equipped, the stability is high, and the economic development is environmentally friendly.
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