Technical FAQs 4

What is UHV transmission technology?

Since 2009, ultra-high voltage (UHV) transmission technology has been promoted and applied in China. Over the years, with the accumulation of experience in the construction and operation of UHV projects and the continuous deepening of scientific and technological innovation, UHV technology and key equipment have made great progress.

How reliable is a UHV transmission system?

Therefore, the reliability and safety requirements of UHV technology and equipment are very stringent. According to the National Power Reliability Index of 2023 released by China's National Energy Administration, the energy availability rate of the UHVDC transmission system is 96.847 %, showing a continuous improvement in reliability.

What are the characteristics of a UHV transmission system?

In UHV transmission systems, the saturation characteristics of the impulse discharge voltage during air gap operation are more significant. It is more difficult to reduce the air gap distance of transmission line with the same switching impulse overvoltage.

What is a UHV converter transformer?

UHV converter transformer In the UHVDC project, the 12-pulse converter is used as the basic converter unit, and each UHV converter station has 24 converter transformers operating in combination according to the disconnection method, providing two groups of commutation voltages with equal amplitude and 30° difference for the converters .

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