14
2026
-
05
A boom in wind–solar–storage projects: An analysis of key technical aspects for transformers and packaged substations dedicated to new energy systems
Construction of domestic wind power, photovoltaic, and energy storage projects continues to accelerate. The unique operating characteristics of new‑energy generation impose special technical requirements on transformers and packaged substations that differ from those of conventional distribution‑network equipment. Photovoltaic and wind power systems are characterized by significant output fluctuations, high harmonic content, and harsh environmental conditions; using standard distribution transformers directly in new‑energy projects can easily lead to failures such as overheating, excessive partial discharge, and accelerated insulation aging. The People’s Republic of China...
Combined transformers for photovoltaic power generation, prefabricated substations for wind power, and containerized transformers for energy storage have become core equipment in wind–solar–storage projects. Photovoltaic American‑style pad‑mounted transformers (ZGS20‑Z・G) must withstand DC components and frequent load fluctuations; 35kV prefabricated substations for wind power need to operate reliably in harsh outdoor conditions characterized by sandstorms, salt spray, and large diurnal temperature ranges; and containerized energy‑storage transformers must accommodate bidirectional charge–discharge operation while meeting more stringent requirements for insulation, heat dissipation, and short‑circuit withstand capability.
During the selection process, in addition to verifying capacity and voltage ratings, several key factors require particular attention: first, harmonic‑mitigation winding design to suppress harmonic distortion from photovoltaic inverters and energy‑storage converters; second, corrosion‑resistant and weather‑proof enclosure treatment—outdoor installations must employ shot blasting, phosphating, and multi‑layer coating for corrosion protection; third, temperature control and partial‑discharge monitoring provisions to facilitate unattended operation and maintenance; and fourth, strict compliance with relevant national standards, such as GB/T 17467, for prefabricated substations.
Many project developers opt for factory-integrated prefabricated modules and integrated packaged substations. With equipment assembled and commissioned at the factory, on-site installation requires only simple connection and wiring, significantly shortening the construction schedule and reducing civil engineering costs. This approach has become the mainstream construction model for current new energy projects.
Shenyang Guangchangyun Power Equipment offers a comprehensive product portfolio that includes photovoltaic combiner boxes, prefabricated wind power substations, custom energy storage transformers, and prefabricated new-energy cabins. The company provides equipment supply, electrical design, and engineering construction services tailored to photovoltaic power plants, wind farms, and energy storage projects, meeting the personalized customization needs of new-energy projects of various scales.
Contact Us
Service Phone:
Company Address
A005145 and A005146 Booth on the 5th Floor of Comprehensive Hall, No.10, Hunnan West Road, Hunnan District, Shenyang City