Following the successful fifth energization impulse of the main transformer, the 300MW wind power segment of CRRC Delingha 1GW "Source-Grid-Load-Storage" Integrated Project was officially connected to the grid. Over  this 379-day high-altitude engineering endeavor, Jiangsu Ankura Smart Power Station Technology Co., Ltd.’s independently developed, world-first 330kV three-phase common-box gas-insulated transmission line (GIL) served as the project’s  pivotal  "energy artery," providing critical  infrastructure for green power transmission under extreme conditions.

Located in the uninhabited cold desert of Lenghu town, Haixi prefecture, Qinghai province, the Delingha Project faces a brutal "two-highs, two-lows, one-strong" environment—characterized by high altitude (avg. 3,000m), intense solar radiation, subzero temperatures, low atmospheric pressure, and severe sandstorms. The massive volume of green electricity generated by 48 CRRC-developed 6.25MW wind turbines demanded  an exceptionally robust, ultra-stable interconnection solution. Ankura's 330kV GIL technology, featuring a fully enclosed three-phase common-box design, successfully addressed the key challenge facing large-scale power transmission in western China's renewable energy bases.

As China’s sole developer of proprietary three-phase common-box GIL core technology, Ankura’s solution delivers complete resistance to sand erosion, thermal shock, and extreme weather, while offering unmatched stability, high transmission capacity, and low maintenance costs—making it ideal for mega renewable energy hub grids.

From R&D to on-site installation, Ankura's team collaborated closely with CRRC and partners, overcoming altitude sickness, logistical hurdles, and harsh terrain. Their "high-voltage perseverance" (a play on Chinese industry terminology) , combining technical expertise with relentless execution, ensured timely project delivery.

This milestone application of 330kV common-box GIL technology marks China’s technical innovation leadership in ultra-high-voltage transmission, solidifying its global leadership in advanced power equipment.

Upon full operation, the project will generate 2.3 billion kWh of green electricity annually—equivalent to saving 700,000 tons of standard coal annually and reducing CO₂ emissions by 1.9 million tons per year.

As Ankura’s first clean energy collaboration with CRRC, the project establishes a replicable "technology-engineering integration" model for state-owned renewable bases, accelerating Qinghai’s rise as a national clean energy powerhouse.

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