Ultra-high-voltage electricity transmission (UHV electricity transmission) has been used in China since 2009 to transmit both alternating current (AC) and direct current (DC) electricity over long distances separating China's energy resources and consumers.
UHV power transmission effectively solved the disparity between energy availability in western China and demand in eastern China. Furthermore, UHV power transmission improves environmental quality by transmitting energy generated from renewable energy sources to load centers .
Ultra-high voltage (UHV) refers to power transmission lines operating at voltages greater than 800 kilovolts (kV). The such high-voltage operation has a high capacity and manages to transmit electricity over long distances with minimal power loss.
Power grid interconnection through UHV power transmission lines optimizes the resource allocation across a wider spectrum and increases the power supply to the receiving-terminal load centers in the eastern region.
China defines those sending direct currents (DC) at voltage levels of 800 kilovolts (kV) or above and alternating currents (AC) at 1,000 kV or above as UHV links. DC systems can carry more power with less loss than AC, and are used to cover greater distances, but they are more expensive to build.
UHV Transmission Technology, published in 2018, highlights that UHV transmission is significantly advantageous in increasing transmission capacity, reserving land resources, reducing transmission losses, and reducing project investment compared to 500-kV transmission. This is due to its large-capacity transmission capability.
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Eight AC UHV projects and 11 DC UHV projects have been built in China, which play an important role in the optimal allocation of energy. Plus there are one more UHVAC and …
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The power demand increases rapidly in China; however, the areas of huge power demands are of longdistance from most areas of abundant energy resource in the country. Therefore,China put in great effort to develop …
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OverviewBackgroundTransmission and distributionUHV transmission worldwideReasons for UHV transmission in ChinaSee alsoExternal links
Ultra-high-voltage electricity transmission (UHV electricity transmission) has been used in China since 2009 to transmit both alternating current (AC) and direct current (DC) electricity over long distances separating China''s energy resources and consumers. Expansion of both AC and DC capacity continues in order to match generation to consumption demands while minimizing transmission losses. Decarbonization improvements will result from the replacement of lower effic…
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China is making strides in renewable energy with its ultra-high-voltage (UHV) power transmission network, known as the "bullet train for power." This technology allows electricity to travel vast …
The development of UHV transmission began with feasibility studies in China in the 1980s. Owing to its features of high voltage, large capacity, and long distance, UHV transmission faced challenges from complex …
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Cross-regional UHV construction projects fall into two main categories: direct current DC UHV and alternating current AC UHV projects. DC UHV projects are primarily point-to-point terminal projects, while AC UHV …
It spearheaded an era that would see the country build a vast network of UHV infrastructure, dubbed the "bullet trains for power", to send electricity generated from hydro and …
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