en.Wedoany.com Reported - On April 3, 2026, the core control equipment for a 300 MW variable-speed pumped storage unit in Zhaoqing, China, successfully passed the factory witness test. An expert panel conducted on-site verification of the core control and protection functions of the collaborative controller and AC excitation control system. The results show that the system fully meets the functional requirements for the 300 MW variable-speed pumped storage unit, with its key technical indicators exceeding the contract-specified standards.

As a key energy project under China's 14th Five-Year Plan, the CSG Zhaoqing Pumped Storage Power Station has a total installed capacity of 1.2 million kilowatts. Its Unit 4 is a 300 MW variable-speed pumped storage unit. Variable-speed pumped storage units offer advantages such as high operational efficiency, a wide range of adaptable water heads, rapid power regulation, and adjustable power under pumping conditions, providing the power system with fast and precise regulation capabilities.

As the collaborative controller and AC excitation control system for China's first 300 MW variable-speed pumped storage unit, this project faced multiple technical challenges, including coordinated control under strong hydro-mechanical-electrical coupling, power decoupling across a wide speed range, and grid fault ride-through. Leveraging its multidisciplinary technical strength, NR Electric conducted in-depth research on control strategies and product development, successfully achieving technological breakthroughs and meeting all preset targets.

This factory test marks a key advancement for NR Electric in the research and development of core control equipment for variable-speed pumped storage units, laying a solid foundation for the subsequent engineering application of the Zhaoqing variable-speed pumped storage unit. NR Electric remains committed to pragmatic innovation, continuously promoting technological progress in the pumped storage field and contributing to the safe and efficient operation of new power systems.

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