China's energy sector is making an ambitious leap into the future. In the city of Hefei, the administrative center of Anhui Province, the country's first demonstration electrical substation has been commissioned, fully integrating quantum technologies into its operational processes. The Houdian facility, operating at 220 kV, began functioning back in November 2024, and now we can finally assess the scale of engineering ingenuity embedded in this project.

This is not just an experiment, but a full-fledged industrial hub equipped with 85 in-house developed quantum devices, divided into 18 categories. The key areas of application are sensing, communication, and computing. This is about creating next-generation infrastructure capable of adapting to the challenges of a modern power grid overloaded with renewable energy sources and complex power electronics.

Technological Arsenal of the Substation

Engineers have implemented a whole range of unique solutions:

  • Diamond quantum sensors — provide high-precision monitoring of current fluctuations, which is critical for grid stability.
  • Quantum dot sensors — continuously analyze the gas environment in control cabinets, identifying risks of cable fires and partial discharges at an early stage.
  • Quantum lidar — scans the atmosphere within a 15-kilometer radius, forecasting weather risks and providing early warning.
  • Quantum position sensors — placed on power line supports, they detect changes in the magnetic field at a level of 1/10,000 of the Earth's, allowing support alignment to be controlled with incredible precision.
  • Quantum cryptography — all data exchange is protected via fiber-optic quantum communication and encrypted 5G+ quantum channels, making interception of facility control virtually impossible.
  • Origin Wukong quantum computer — performs power flow calculations, which in the future will solve the problem of real-time modeling of large-scale power grids.

According to engineer Tian Teng from the Digitalization Institute at State Grid Anhui Electric Power, the transition to new technologies is an objective necessity. The new system allows for significantly faster detection and diagnosis of equipment defects, reducing both inspection costs and operational expenses. The economic effect is already evident: the Houdian substation has reduced the annual error in electricity measurement by more than 500,000 kWh.

Notably, the technologies tested at this facility are already being replicated across other power grids in Anhui Province. This indicates that China's energy sector is not just testing quantum solutions but is preparing for their large-scale implementation.

My analysis: China once again demonstrates a systematic approach to implementing advanced technologies. Although the report does not specify whether the quantum computer surpasses traditional systems in speed and accuracy, the very fact of creating a working hybrid hub is a powerful signal for the entire industry. We are on the threshold of an era where quantum computing will become an integral part of critical infrastructure, and China is clearly intent on setting the tone here.