The world’s first 320 Mvar / 1100 kV single-column low-noise shunt reactor, independently developed by Shandong Electrical Engineering & Equipment Group Co., Ltd. under China Electrical Equipment Group Co., Ltd. (CEEG), has successfully passed all type tests.
With an ultra-low noise level of 62.6 dB(A) and a maximum vibration amplitude of less than 4 microns, the reactor sets a new global record for ultra-high voltage (UHV) reactors with extremely large capacity and low noise performance.
While UHV transmission projects can achieve over 95 percent efficiency across distances exceeding 1,000 kilometers, noise and vibration pollution remain a major challenge hindering the green upgrading of such infrastructure. Through the development of an integrated technology system, CEEG has embedded eco-friendly, sustainable design principles throughout the entire product development and manufacturing process — advancing the green transformation of power equipment.
The 320 Mvar low-noise UHV reactor incorporates four major technological breakthroughs, redefining performance benchmarks for UHV reactors. It introduces an innovative electromagnetic force balancing design that enhances force distribution uniformity by over 30 percent, and employs a multi-level force-compensation vibration-suppression structure that effectively addresses inherent vibration issues in large-capacity reactors.
The reactor adopts a multi-dimensional noise-reduction system that includes advanced technologies such as composite vibration suppression, honeycomb sound-absorbing materials, and low magnetostriction ferromagnetic materials — achieving optimal peak-shaving and noise mitigation.
The successful development of the reactor represents a significant advancement in China’s UHV core equipment capabilities. According to evaluations by authoritative experts, the reactor demonstrates outstanding comprehensive performance, with vibration control reaching the level of precision instrumentation. It fills a critical technical gap in low-noise UHV large-capacity reactor technology.
Looking ahead, the technology is expected to be applied across advanced power transmission systems, providing key equipment support for building a “green power grid” and accelerating the construction of a new-type power system.
(Executive editor: Yuan Ting)
