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BLOG/TECHNICA

Peak carbon dioxide emissions and carbon neutrality

2026-09-09

The total length of Xinjiang’s 750-kV ultra-high-voltage transmission lines has exceeded 15,000 kilometers.

According to the State Grid Corporation of China, the total length of Xinjiang’s 750-kV ultra-high-voltage transmission lines has exceeded 15,000 kilometers, covering an area of approximately 1.6 million square kilometers and significantly enhancing the region’s capacity for transmitting clean power.

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2022-03-03

The engineering achievement of the Kunliu–Long DC transmission project, “Ultra-High-Voltage Multi-Terminal Hybrid Flexible DC Transmission Technology,” has been published and released.

Recently, the book “Ultra-High-Voltage Multi-Terminal Hybrid Flexible DC Transmission Technology,” compiled by China Southern Power Grid Ultra-High Voltage Company and based on the Kunming–Liuzhou–Longzhou DC transmission project, was officially published and distributed by the Machinery Industry Press.

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2021-10-19

A Review of China’s Ultra-High-Voltage Power Transmission

Ultra-high voltage transmission has brought profound changes to our production and daily life. But have you ever wondered: although the West pioneered this technology more than a century ago, China managed to leapfrog ahead in just over a decade, turning it into another hallmark of national strength—on par with nuclear power and high-speed rail. What accounts for this remarkable turnaround?

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2021-10-04

The Nanchang–Changsha 1,000-kV AC transmission project is progressing steadily.

On September 30, on the eve of National Day, nearly 20 employees from Jiangxi Provincial Transmission and Transformation Engineering Company were conducting tower‑erection work at Site No. 8001 of Section 4 of the 1,000‑kV Nanchang–Changsha UHV transmission line in Sixi Town, Shanggao County, Jiangxi Province. Hu Gebiao, head of the Owner’s Project Department at State Grid Jiangxi Electric Power Co., Ltd., stated that construction along the entire line will continue without a holiday during the National Day period, adhering to the original schedule to ensure completion and commissioning within the year.

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2021-09-17

Connecting the world with ultra-high-voltage power grids—China’s journey has only just begun.

Each successive leap in transmission voltage has been a step forward in humanity’s level of electrification.

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2021-09-14

The Baihetan–Zhejiang ±800 kV UHVDC Transmission Line Project (Section YU1) has commenced construction.

On September 24, the foundation‑first pilot ceremony for Tower No. SN2003 of Section 1 of the Baihetan–Zhejiang ±800 kV UHVDC transmission line project, undertaken by Heilongjiang Transmission and Transformation Company, was held in Xianlong Town, Yongchuan District, Chongqing. This marked the official commencement of foundation construction for this section of the line.

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2021-07-18

The Baise Bureau of China Southern Power Grid’s Ultra-High Voltage Division has found that the insulators’ performance is consistently good.

To accurately assess the insulation performance of porcelain insulators along the transmission line, from January 23 to 26, the Baise Bureau of China Southern Power Grid Ultra-High Voltage Company organized 36 operation and maintenance personnel to conduct insulation resistance tests on 20,708 ceramic insulators of the ±500 kV Xing’an DC transmission line over a period of four days. All the ceramic insulators were found to be in good condition.

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