With the development of new energy sources and the rise of high technology, the silence of a hundred years of direct current may regain the once lost dominance. This is called the "DC revenge" revolution, how to interpret? Will leveraging much market? As intermittent and fluctuating renewable energy becomes more and more available to the grid, the challenges of grid security are becoming more prominent, a challenge that comes from the drawbacks of alternating current . A hundred years ago, when Thomas Edison invented the light, DC was the most important mode of transmission at the time. However, as technology improved and demand on the electricity side increased, DC eventually lost to the then new form of transmission - AC, which almost completely ruled the power transmission market for more than a hundred years. In 1903, Edison in order to be able to keep the DC as a distribution standard in the United States, and even directed an electrocution event, that even 6600 volts of alternating current, is considered a human-threatened circus elephant electrocution executed in order to walk panic Prove the danger of AC. However, Edison ended in failure. Once-popular Edison General Electric Company was forced to remove Edison's name and renamed General Electric Company. Since then, AC began a century-long rule. Ironically, although Edison lost that war, with the rise of new energy and high technology, DC will likely make a comeback after 110 years. "The DC has not been forgotten." Liu Dongsheng, deputy general manager of Tianwei Baobai, admitted that the demand for DC is on the rise. It is not just HVDC that light-level HVDC that is connected to new energy sources is also beginning to burst its potential. Not long ago, what GregReed, director of the "Power and Energy Project" at the University of Pittsburgh, led to a flurry of industry turmoil. He said bluntly: "In 20 years, 50% of our total electricity load will be for DC consumption, which is growing even faster than we think." At present, the global market share of DC is less than 20%. Professor Reid is not a prophet, he has his own research data. Any use of transistor devices rely on DC, high-tech products more verified this point. Digital consumer devices such as PCs, iPhones and flat-screen TVs that rely on DC transmission make up one-fifth of today's total power consumption; data centers that manage the Internet and communications networks are another driver of DC, using DC 15% less energy consumption than the traditional AC configuration; and the rise of new energy - solar, microgrid, electric vehicles, these new energy changes, all filled with the shadow of DC, with the proportion of new energy sources in various countries increased, the data It is also growing. Smell-sensitive companies, predicted in advance the arrival of the DC change. ABB spends billions of dollars each year investing in technology reserves for HVDC transmission. In November 2012, ABB announced a breakthrough in DC R & D, which enables the efficient transmission of widely distributed solar panels, wind turbines and other renewable energy sources to HVDC transmission lines to form Flexible grid. In addition, ABB is currently working with telecommunications technology service provider green.ch to design and install a state-of-the-art DC power distribution system for power distribution. In agreement with IO, ABB is proposing to cooperate in the development of a new DC-based data center module , Advancing the development of the world's first DC-powered data center module; in May 2011 ABB also acquired a controlling stake in Validus DC Systems. Not only international companies, but also domestic enterprises are starting to get ready. "We are expanding the capacity of HVDC equipment in Qinhuangdao plant and also reserving the light-weight DC transmission technology," said Liu Dongsheng. TBEA is almost doing the same work with Tianwei change, TBEA Shen Zhongtao, deputy general manager, said that while high voltage transmission occupy enough market share, it is trying to export some of the light DC equipment, but also For the future development of large reserves. Large enterprises to make reserves, small business sense of smell is equally sensitive. Fark, a young entrepreneur who positions his unit, Jiangsu Yuanzhong DC Microgrid Co., Ltd. as the nation's first "all-DC" microgrid company, and such a segment, uses his words to stem from the outlook for DC transmission Optimistic. There are indications that the silence of a hundred years of HVDC transmission, is step by step toward the stage, and even some people called the beginning of this change called "DC revenge." Smart Door Lock,Bluetooth Door Lock,Digital Door Lock,Smart Fingerprint Door Lock Dongguan Kaisijin Intelligent Technology Co., Ltd , https://www.dgsmartlockoems.com
November 17, 2023