Language
Country/Area
No result found
rom 1951 to today, why has high-voltage direct current always occupied the "stage" of global power transmission
As the demand for electricity continues to grow, the need for more efficient and safe power transmission systems becomes more urgent. High voltage direct current (HVDC) technology has gradually taken a dominant position in the global power market due to its outstanding long-distance transmission performance. Since the first commercial HVDC system was commissioned in the Soviet Union in 1951, the technology has evolved over the decades and has become an important tool for promoting the development of renewable energy.
Advantages of HVDC systemsThe main advantage of HVDC systems is that they can significantly reduce energy losses during transmission over long distances. Compared to traditional alternating current (AC) systems, HVDC systems can typically reduce transmission losses to 3.5% per 1,000 km, while AC systems can reach 6.7%. The fundamental reason for this savings is that DC only transmits active power, avoiding the losses caused by phase shift present in AC systems.
“HVDC reduces transmission losses and makes it easier to control the flow of energy between power generation and consumption.”
Technological evolution
HVDC technology has a long history of development. The earliest long-distance DC transmission dates back to 1882, but real commercialization began in the mid-20th century. In 1954, a 100kV HVDC system was successfully put into use between Gotland and Sweden, which laid the foundation for subsequent HVDC technology. With the development of power electronics, from mercury arc valves to the current insulated gate bipolar transistor (IGBT) technology, the efficiency and reliability of HVDC systems have been continuously improved.
"With the introduction of new technologies, HVDC systems have made significant improvements in cost and reliability."
Application scope of HVDC
HVDC systems have been widely used in many scenarios, including submarine cable transmission, connecting power grids with different frequencies, transmitting electricity from remote areas, and integrating renewable energy. Especially in the utilization of wind energy, the flexibility of the HVDC system enables it to maintain stable power generation in a changing grid environment.
Market Trends and Future Outlook
With the rapid growth of renewable energy and the emphasis on environmental sustainability, the market demand for HVDC technology is continuing to increase. According to the latest market report, the global HVDC market is expected to grow steadily at an annual rate of more than 10% over the next decade. China is at the forefront of the world in this field, and its various long-distance HVDC projects have become global models. China, which has become a leader in HVDC technology, is working hard to further expand its influence in the global market.
“There is growing interest in HVDC technology worldwide. How will this technology continue to develop in the future?”
Looking back at the history of HVDC technology, we can see that it has played an important role in solving transmission loss and grid stability challenges. In the future, with the advancement of technology and the increasing demand for renewable energy, HVDC technology is bound to play a more important role in global power transmission. But can this technology continue to play its leading role in future energy governance, which depends on continuous innovative technological evolution and policy support?
