Recently, China’s electrical equipment sector has achieved a landmark breakthrough, injecting new certainty into the evolution of the global energy network.
A 750 MVA flexible DC converter transformer, successfully developed by XD Changbian, has set a new world record for single-unit capacity in flexible DC transmission. With fully independent design and manufacturing, the project overcame a series of cutting-edge challenges, including large-capacity leakage flux optimization and coordinated composite insulation design.
This achievement goes beyond the success of a single product. It marks the completion of a fully autonomous technology chain—spanning core materials, simulation-driven design, and advanced manufacturing processes—along a critical pathway for future power grids: ultra-high-voltage (UHV) flexible DC transmission. The transformer supports the Gansu–Zhejiang ±800 kV UHV DC transmission project, a national backbone initiative for “West-to-East Power Transmission” and optimized nationwide energy allocation. Its success is directly tied to the efficient integration and long-distance, secure transmission of large-scale renewable energy.
This breakthrough clearly highlights an industry trend: as the energy transition deepens, competition has shifted from improving individual component performance to achieving comprehensive mastery of extremely complex, system-level engineering. Under harsh operating conditions such as DC bias and high-frequency harmonics, and facing challenges of leakage flux and temperature rise at ultra-large capacities, success depends on the deep integration of full-scale simulation, digital modeling, and independent innovation in key manufacturing equipment. Together, these elements define a proven methodology and quality benchmark for addressing the demands of ultra-high voltage, ultra-large capacity, and highly flexible power transmission.
With the emergence of such milestone achievements, the industry’s focus naturally turns to broader questions:
-
How can elite, highly customized breakthrough capabilities be transformed into scalable, repeatable industrial advantages?
-
How can the engineering expertise accumulated through overcoming critical challenges benefit wider upgrades of power equipment and the development of new-type power systems?
The World Power Supply Expo 2026 (WPSE 2026) serves as an ideal platform to observe and drive the systematic evolution of power and energy technologies, placing frontier breakthroughs within the context of a complete industrial ecosystem.
From advanced insulation materials and semiconductor devices that define performance limits, to digital simulation and intelligent sensing technologies enabling precise control, and further to high-end manufacturing processes and testing equipment that ensure reliability.
The expo will also establish a dialogue network linking basic research, key technologies, engineering applications, and forward-looking standards. Grid operators, equipment manufacturers, materials scientists, and digital technology experts will engage in in-depth exchange and collaboration around a shared goal: building a more flexible, intelligent, and resilient energy infrastructure.
UHV flexible DC transmission is a core technological pillar for constructing a new-type power system dominated by renewable energy. The autonomy, controllability, and sustained leadership of its equipment will directly determine whether we can shape the future architecture of the global energy internet and securely integrate large-scale, variable renewable resources such as wind and solar power.
Therefore, participating in—and shaping—the technological evolution and industrial collaboration of this field is not only about securing a commanding position in a trillion-yuan high-end equipment market, but also about contributing an indispensable foundation to national energy security and global green, low-carbon transformation.
At WPSE 2026, every discussion on technological pathways and every cross–supply-chain collaboration may help define the DNA and standards of the next generation of energy networks.